Unable to Ping Dlink Switch

7/25/2019 Unable to Ping Dlink Switch

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Unable to ping/telnet to management interface of switch

Answered Question

Charlie Jones3 years ago

Good morning,

A couple of weeks ago we upgraded about 50 access layer switches at a branch office All of

them are !"#35$0#%&'" (he switches were upgraded to )*" +%%55-".$ *nce the update

was completed, all of the switches were reloaded to complete the upgrade *ne of the 50

switches showed up in our monitoring application as being down after the reload !e had

someone at the office plug in a laptop so we could console into it and the switch

configuration looked correct (he switch is working normally 'C/s and phones working

normally-, but we cannot ping or telnet into this one switch elow is a breakdown of this

site in terms of topology1

Core # % $502

istribution # % 3450g

Access # 35$0 switches

ayer two looks to be running normally in that 6tp is being updated and cdp is working aswell (he trunk interfaces from this switch to the distribution layer switch are up each gig

interface on this 35$0 goes to one of the 3405g switches-

*n this switch, ) ha6e erased the config and deleted the 6landat ) reapplied the config and

re#enabled 7(' and this switch is still not accessible Any suggestions8

) should mention that the management interface is 6lan + ) ha6e tried gi6ing this

management interface a different )' address in case there was a duplicate )' and that does not

work *ther switches that were upgraded and connect up into this 3450g stack work fine

) ha6e this problem too0 6otes

Correct Answerby stephenstackabout 2 years 5 monthsago

Charlie

thats great news, but unfortunate in a way that it was not found eariler

9ot my te:t but the; which will pre6ent the double#encapsulation

attacks (his command globally works on all switchport trunks on that entire .thernet

switch (his command will make sure that the nati6e 7A9 is always tagged on e6ery trunk

on the switch (his is a great best practice and takes care of the issue with a single

command This command should be entered in every switch in the campus? my bold-
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(his caused e6ery untagged ingress frame is dropped, so the traffic replies were not reaching

the control plane of the switch

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stephenstack3 years ago

Ei

Can the switch ping out to the network8 is the ip default#gateway set8

Degards

"tephen
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E),

(he switch cannot ping out (he default gateway is set as well

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can you pro6ide partial rele6ant configuration8 Also, try a debug ip icmp when pinging it to

see if the icmp packets are reaching the switch

Degards

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) enabled )CF' debugging ) pinged the switch from another switch in this ) and nothing

shows in the log of the failed switch

)nterface 7lan+

ip address +0+20++% %55%55%550

ip default#gateway +0+20+
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glengrant3 years ago

Fake sure ip routing is not turned on the 35$0, otherwise the default gateway statement is

no good )f routing is turned on then you would need a default static route pointing to the

3450 gateway address for that 6lan and get rid of the default gateway statement )s this

switch trunked or Hust an access port 8 Check trunk setup , nati6e 6lan for trunk etc Iou

should be able to get to the switch from 3450 e6en if the gateway is no good because it is

directly attached to the 3450 which is where i assume the 6lan + subnet originates "ource

ping the switch from the 6lan + "7)

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Dichard urts3 years ago

'erhaps the output of show ip interface brief or of show interface status might shed some

light on the issue8

) also wonder what would be in the output of show arp from the problem switch

E(E

Dick

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Eere is the information you re=uested

)nterface )'#Address *8 Fethod "tatus 'rotocol

7lan+ +0+20++% I." manual up up

ast.thernet0+ unassigned I." unset down down
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ast.thernet0% unassigned I." unset up up

ast.thernet03 unassigned I." unset up up

ast.thernet0& unassigned I." unset down down

ast.thernet05 unassigned I." unset down down

ast.thernet0$ unassigned I." unset up up


ast.thernet0K unassigned I." unset up up


ast.thernet0+0 unassigned I." unset up up

ast.thernet0++ unassigned I." unset up up

ast.thernet0+% unassigned I." unset up up


ast.thernet0+& unassigned I." unset down down


ast.thernet0+$ unassigned I." unset down down


ast.thernet0+K unassigned I." unset up up

ast.thernet0+2 unassigned I." unset down down

ast.thernet0%0 unassigned I." unset up up

ast.thernet0%+ unassigned I." unset up up

ast.thernet0%% unassigned I." unset up up

ast.thernet0%3 unassigned I." unset down down

ast.thernet0%& unassigned I." unset up up

Gigabit.thernet0+ unassigned I." unset up up

Gigabit.thernet0% unassigned I." unset up up


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sh arp

'rotocol Address Age min- Eardware Addr (ype )nterface

)nternet +0+20+ 0 )ncomplete AD'A

)nternet +0+20++% # 00+b0c4c+3&0 AD'A 7lan+

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(hanks for the information )t is somewhat helpful, but not enough to diagnose the full

problem )t does confirm the )' address of the 7A9 interface seems to be correct

(he fact that the arp table shows incomplete for the mac address of the gateway +0+20+indicates that arp is failing to resol6e the )' address to a mac address (his typically indicates

some layer % problem Can you post the output of show interface status, and indentify for us

the ports on the switch that connect to the upstream switch8

E(E

Dick

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https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=QY1hPN2eeq0cjDMMJKffsMsxYVV_M9qlrBtLTaB7p1shttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xb9tuMsjNgGcHeO588p6-8_pYCMxCyDIYElmKOtw4fkhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=_pcmo_ilQnq6yCOPYzJ7XsIstOESpgDEqEcZWzav5ashttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=XsZs1IXBMiKYrGXXCO69Vea8MdK9R6o3D6N8hqX6lMMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=LjKd7ON-Bup17nNzGO5mPUBqrZyhgfCdv9ZPnhSm_M4https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204846https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204846https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=G7mGU39JwOlnPK4Im1t6NorryYc_0H4b37Esg8HJPckhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=lG1VqUxW7YT022xCtHy2yh1aTVtZPrTMvuF843h_Y5Yhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=QY1hPN2eeq0cjDMMJKffsMsxYVV_M9qlrBtLTaB7p1shttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xb9tuMsjNgGcHeO588p6-8_pYCMxCyDIYElmKOtw4fkhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=_pcmo_ilQnq6yCOPYzJ7XsIstOESpgDEqEcZWzav5ashttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=XsZs1IXBMiKYrGXXCO69Vea8MdK9R6o3D6N8hqX6lMMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=LjKd7ON-Bup17nNzGO5mPUBqrZyhgfCdv9ZPnhSm_M4https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204846https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204846https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=G7mGU39JwOlnPK4Im1t6NorryYc_0H4b37Esg8HJPckhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=lG1VqUxW7YT022xCtHy2yh1aTVtZPrTMvuF843h_Y5Y


9/39

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Iou may also want to check what 6lans are allowed an the upstream trunk links with a show

int trunk o this on both sides of the trunks from the affected switch and ensure 6lan+ is

allowed

Degards

"ent from Cisco (echnical "upport i'hone App

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) think this will hit the last two =uestions ) compared this output to another switch that we

upgraded, and the information matches the functional switch
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=pGQQgVYevxu-a94-5NWDpkJsCdNg0CNMJvJFmLfQEaYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=n2MfKIk63QJ_M-WHLhcozueKQlDxoscI2JkhQP44FnQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=YzKoTPENFOPFU_1MTigsk-CBJPRadTabOEQtiwaLqmIhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204876https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204876https://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=PbRiU4khJaAmAOqt3deSBxRZNvNVuEOrSb1jx8-hHhYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=jL8hlhK_kF4L4ud7SGdRoR6THixF0_5AtnCLUitl-pEhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=v9DnU7UFNFao0c2XhrLfYw4rRIbHQO4fpJq6AYvfwzMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=X1d8FHvaFCgNfqnOSQXveeTxSDVW1iroImup4a4xLHchttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=E_AGkY8Z1IMkiZkSOMlysaGfQkHoCXX6FLcGqXQZKL8https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204926https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204926https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=pGQQgVYevxu-a94-5NWDpkJsCdNg0CNMJvJFmLfQEaYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=n2MfKIk63QJ_M-WHLhcozueKQlDxoscI2JkhQP44FnQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=YzKoTPENFOPFU_1MTigsk-CBJPRadTabOEQtiwaLqmIhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204876https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204876https://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=PbRiU4khJaAmAOqt3deSBxRZNvNVuEOrSb1jx8-hHhYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=jL8hlhK_kF4L4ud7SGdRoR6THixF0_5AtnCLUitl-pEhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=v9DnU7UFNFao0c2XhrLfYw4rRIbHQO4fpJq6AYvfwzMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=X1d8FHvaFCgNfqnOSQXveeTxSDVW1iroImup4a4xLHchttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=E_AGkY8Z1IMkiZkSOMlysaGfQkHoCXX6FLcGqXQZKL8https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204926https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204926https://supportforums.cisco.com/users/foleyacct


10/39

(runks on problematic switch

Gi0+ connected trunk full +000 +0+00+000ase(L "'

Gi0% connected trunk full +000 +0+00+000ase(L "'

(runk Mplink "witch +Gi+0+ connected trunk full +000 +0+00+000ase(L

(runk Mplink "witch %

Gi+0% connected trunk full +000 +0+00+000ase(L

"how int trunk from problematic switch

'ort Fode .ncapsulation "tatus 9ati6e 6lan

Gi0+ on K0%+= trunking +

Gi0% on K0%+= trunking +

'ort 7lans allowed on trunk

Gi0+ +#&02&

Gi0% +#&02&

'ort 7lans allowed and acti6e in management domain

Gi0+ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi0% +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

'ort 7lans in spanning tree forwarding state and not pruned

Gi0+ +,%5,%4,%2,3+,+%5,+%4,+%2,+3+,503,K5+,K53,235,244,2K5,222,+00+

Gi0% %$,%K,30,3%,+%$,+%K,+30,+3%,K30,K50,2K&,220,22K

"how int trunk from "witch +


Gi+0+ on K0%+= trunking +

Gi+0% on K0%+= trunking +

Gi+03 on K0%+= trunking +Gi+0& on K0%+= trunking +

Gi+05 on K0%+= trunking +

Gi+0$ on K0%+= trunking +


Gi+0%5 on K0%+= trunking +


Gi+0+ +#&02&

Gi+0% +#&02&

Gi+03 +#&02&

Gi+0& +#&02&Gi+05 +#&02&


11/39

Gi+0$ +#&02&

Gi+04 +#&02&

Gi+0%5 +#&02&

'ort 7lans allowed and acti6e in management domain

Gi+0+ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+

Gi+0% +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+03 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0& +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+05 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0$ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+Gi+04 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0%5 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+


Gi+0+ +,K5+,K53

Gi+0% +

Gi+03 +,K5+,K53

Gi+0& +,K5+,K53

Gi+05 +,K5+,K53

Gi+0$ +,K5+,K53

Gi+04 +,K5+,K53

Gi+0%5 +,%5#3%,+%5#+3%,503,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+

"how int trunk from "witch %


Gi+0+ on K0%+= trunking +

Gi+0% on K0%+= trunking +Gi+03 on K0%+= trunking +

Gi+0& on K0%+= trunking +


Gi+0$ on K0%+= trunking +


Gi+0%5 on K0%+= trunking +


Gi+0+ +#&02&

Gi+0% +#&02&

Gi+03 +#&02&Gi+0& +#&02&


12/39

Gi+05 +#&02&

Gi+0$ +#&02&

Gi+04 +#&02&

Gi+0%5 +#&02&

'ort 7lans allowed and acti6e in management domainGi+0+ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0% +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+03 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0& +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+05 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0$ +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+

Gi+04 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+

Gi+0%5 +,%5#3%,+%5#+3%,503,K03#K0&,K30,K50#K5+,K53,235,244,2KK5,220,22K#

222,+00+


Gi+0+ +,%$,+%$,K50

Gi+0% +,%$,+%$

Gi+03 +,%$,+%$,K50

Gi+0& +,%$,+%$,K50

Gi+05 +,%$,+%$,K50

Gi+0$ +,%$,+%$,K50

Gi+04 +,%$,+%$,K50

Gi+0%5 +,%5#3%,+%5#+3%,503,K30,K50#K5+,K53,235,244,2KK5,220,22K#222,+00+

"ee Fore

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https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Wey9VuPo4RE5kv0Dfyff9BYW5LdQMw-m8_dDvjXiqm8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=EYarPgpOegQX9cbQl_ZceCUz2lgitRxGeIaliEj3jLkhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=lhRlU-DVYXZ5CtNrUft1eiiPGLkZeFx2qnypAwBrMtMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=GLlxmgS186xzk8VY5HDHLzMlS6zVtSUPYr0ZlmN1jr0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=sRYAaj6TuLamObfIXXvuO4OTrmxIaW1vc26e55XXg6ohttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204956https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204956https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Wey9VuPo4RE5kv0Dfyff9BYW5LdQMw-m8_dDvjXiqm8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=EYarPgpOegQX9cbQl_ZceCUz2lgitRxGeIaliEj3jLkhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=lhRlU-DVYXZ5CtNrUft1eiiPGLkZeFx2qnypAwBrMtMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=GLlxmgS186xzk8VY5HDHLzMlS6zVtSUPYr0ZlmN1jr0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=sRYAaj6TuLamObfIXXvuO4OTrmxIaW1vc26e55XXg6ohttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204956https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204956


13/39


(hanks for the additional information "o far it all looks reasonable and looks like it should

be working-

'erhaps you could post the output of show cdp neighbor from the problem switch and also

from both of the upstream switches

!here is the address +0+20+ located8 on which de6ice-

E(E

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All looks ok

9ot sure if this was done or can be done ut try to remo6e 6lan + completely .lse default

it/s config shut it down and start configuring it from scratch # bring it up only when

configured Ea6e had similar issues with s6i/s in the past

Degards
https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=q9-Clb3zMzQs3wq54Ety49C_z4i7ZwHG0Y1PRX-mVgAhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=1NcHnRY381q_iAxslqxt7D3nBb50TTJ5vOQWsLjBw0Yhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=ksonPvms_XRwscbXG1dASmEupn-unmqJFe-8cTxpjUYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=WCbz_tbYXnSXe3CzB17AOWHma2FWH9xyAJuEYhMplgIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=aI7uIbwUZdJYZgAdcjIhFSPUGR2eXNWwcxmMMM3lPDohttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204981https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204981https://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=q9-Clb3zMzQs3wq54Ety49C_z4i7ZwHG0Y1PRX-mVgAhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=1NcHnRY381q_iAxslqxt7D3nBb50TTJ5vOQWsLjBw0Yhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=ksonPvms_XRwscbXG1dASmEupn-unmqJFe-8cTxpjUYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=WCbz_tbYXnSXe3CzB17AOWHma2FWH9xyAJuEYhMplgIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=aI7uIbwUZdJYZgAdcjIhFSPUGR2eXNWwcxmMMM3lPDohttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204981https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8204981https://supportforums.cisco.com/users/stephenstack


14/39

"ent from Cisco (echnical "upport i'hone App

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elow is the cdp information you re=uested +0+20+ resides on the core switches 6ia hrsp

'roblematic "witch

CE)#35$0#%$0%Nsh cdp neighbors gi0+

Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge

" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone,

# Demote, C # C7(A, F # (wo#port Fac Delay

e6ice ) ocal )ntrfce Eoldtme Capability 'latform 'ort )

CE)#3450G#%$0+ Gig 0+ +%$ " ) !"#C3450G Gig +0%

CE)#35$0#%$0%Nsh cdp neighbors gi0%


" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone,

# Demote, C # C7(A, F # (wo#port Fac Delay


CE)#3450G#%$0% Gig 0% +3+ " ) !"#C3450G Gig +0%

(runk "witch +

Capability Codes1 D # Douter, ( # (rans ridge, # "ource Doute ridge " # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=1hfPMKRZ3XpMvucCXYzlUssV_pw1dcmq__tYAKMuR-8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=NMV7hRybtjNwSCUKM47-Ym-sJQvU41OsquAqd-8UXL0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=-1tsR071uTgVNRkytO1hT3ZBLyuCa1UzfiJ6TTgXEiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=MgrkmqTMsFCHYR6hFteB5LCCn24zXLUjjdXTvf09Bmghttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xub9oaj6yN0KjcFDnF8YKCabrjdR8FzaIEx7Xal_6zAhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=1hfPMKRZ3XpMvucCXYzlUssV_pw1dcmq__tYAKMuR-8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=NMV7hRybtjNwSCUKM47-Ym-sJQvU41OsquAqd-8UXL0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=-1tsR071uTgVNRkytO1hT3ZBLyuCa1UzfiJ6TTgXEiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=MgrkmqTMsFCHYR6hFteB5LCCn24zXLUjjdXTvf09Bmghttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xub9oaj6yN0KjcFDnF8YKCabrjdR8FzaIEx7Xal_6zAhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205011https://supportforums.cisco.com/users/foleyacct


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CE)#35$0#%$0+ Gig +0+ +43 " ) !"#C35$0#%Gig 0+

(runk "witch %

CE)#3450G#%$0%Nsh cdp neighbors gi+0%


" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone


CE)#35$0#%$0% Gig +0% +$5 " ) !"#C35$0#%Gig 0%

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'erhaps we ha6e a clue about the problem ) see that from the problem switch we belie6e that

upstream switch + is using interface gi+0%

CE)#3450G#%$0+ Gig 0+ +%$ " ) !"#C3450G Gig +0%

but on the upstream switch+ it think is it using interface Gig+0+

CE)#35$0#%$0+ Gig +0+ +43 " ) !"#C35$0#%Gig 0+

) am not sure what causes this mismatch ut ) suspect that this is related to the problem
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=VRrDmyUMKDSxI4CMiSOC6joKJ0Lz0aAM4yjm-wQ_-bYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=aqNA-uYOuZOZ-449ntGhk1xXdWLbx_YSYNYpkJupUiMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=pEVyw2KpKo32XL-vjBPe-UFxFWB65vkqGyHMK8kfSd8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=lXOu1vf9CvKEtIr5w1wksK231xZIZWQ5uuCk-7Nl0WYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=r7aUCSXWRWjpA_v0E-Sxu3NgniUvvpB8pDCGz28bCPYhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205016https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205016https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=VRrDmyUMKDSxI4CMiSOC6joKJ0Lz0aAM4yjm-wQ_-bYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=aqNA-uYOuZOZ-449ntGhk1xXdWLbx_YSYNYpkJupUiMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=pEVyw2KpKo32XL-vjBPe-UFxFWB65vkqGyHMK8kfSd8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=lXOu1vf9CvKEtIr5w1wksK231xZIZWQ5uuCk-7Nl0WYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=r7aUCSXWRWjpA_v0E-Sxu3NgniUvvpB8pDCGz28bCPYhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205016https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205016https://supportforums.cisco.com/users/rburts


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"orry, that was my fault Eere is the correct informaiton on the uplink switches

"witch +


CE)#35$0#%$0% Gig +0% +$% " ) !"#C35$0#%Gig 0+

"witch %


CE)#35$0#%$0% Gig +0% +&4 " ) !"#C35$0#%Gig 0%

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https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=l76xQcP7Ud4_ymwkEBfdQh8uOBlhavvc-Pu7vAtNSvYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=IxFA18e64CEyYbPNPAkFT5SfwY3hXUKNteEUCppJLxshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Km8DiBoGiRoJUREwYbT_w1NyY1JKhYhCoboNz7XRBmIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=decCa50Xvso4uMmk6-wa3uXZgF4JCZ0uuFO5KZRksqUhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=HfQziPywEdBRHC0B17T30tepdVqwCmcqwUcvzdo1PtMhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205056https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205056https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OVqN4-8Swc2HfaVaHamJfRUbijg8ma2eo43Gr68mLxYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Pit0ENmgPDd7o8IRPIpFhuBSmCGr7Hwi9-7q6AZZtuAhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=fZSUWH3vGcUO6BUL6_5RCZsV7gkFMQpT4YV9wIxCKT8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=JZ5QLu6EmOaQdSqFixbsSmCj8JX-2b-ugGUcZVrNyZUhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=7UwjJA3GwOP6Bm05d3f4SANyZo8VYxsWs6fA8Fho7Ekhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=l76xQcP7Ud4_ymwkEBfdQh8uOBlhavvc-Pu7vAtNSvYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=IxFA18e64CEyYbPNPAkFT5SfwY3hXUKNteEUCppJLxshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Km8DiBoGiRoJUREwYbT_w1NyY1JKhYhCoboNz7XRBmIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=decCa50Xvso4uMmk6-wa3uXZgF4JCZ0uuFO5KZRksqUhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=HfQziPywEdBRHC0B17T30tepdVqwCmcqwUcvzdo1PtMhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205056https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205056https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OVqN4-8Swc2HfaVaHamJfRUbijg8ma2eo43Gr68mLxYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Pit0ENmgPDd7o8IRPIpFhuBSmCGr7Hwi9-7q6AZZtuAhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=fZSUWH3vGcUO6BUL6_5RCZsV7gkFMQpT4YV9wIxCKT8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=JZ5QLu6EmOaQdSqFixbsSmCj8JX-2b-ugGUcZVrNyZUhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=7UwjJA3GwOP6Bm05d3f4SANyZo8VYxsWs6fA8Fho7Ek


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*r did you show the incorrect cdp neighbor on the upstream switch +8 "ince the neighbor it

is reporting seems to not be the problem switch8

(runk "witch +


" # "witch, E # Eost, ) # )GF', r # Depeater, ' # 'hone


CE)#35$0#%$0+ Gig +0+ +43 " ) !"#C35$0#%Gig 0+

l am now noticing that it is 35$0#%$0+ and not 35$0#%$0%

E(E

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18/39


* et us take a slightly different approach !e know that part of the difficulty is that the

problematic switch is not able to arp for the +0+20+ address it shows incomplete in the arp

table- Iou ha6e told us that this address is E"D' on the upstream switches "o can the

problematic switch arp and ping- to the physical interface address not the shared address-

on either or both of the upstream switchesO8

Also ) would be curious to know if the upstream switches can arp for the management

address of the problematic switch8

E(E

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) went to the upstream switches and attempted to ping the management )' of the problematic

switch, and that times out !hen ) checked the arp on the upstream switches, ) see the

following1

)nternet +0+20++% 0 00+b0c4c+3&0 AD'A 7lan+

)s that what you were looking to see8

"ee Fore
https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=O1c1_6ppNGjkeqX3NpFbc6SDHpC4LvJ3raSYpJxJO24https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=odoRpZQhVRIN1YvKBu0w3IYKdZGOes2MPmObUbwXTeshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=FU4G9xUnGob2FfcMsdN7jEkWc0MdSFnRrYUv18rnzSMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=e9KeM486N3Fn4NfMF8ENlO9CugUhlWhHCoMciipxIIIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=4WJ-IHNUQQXM6iAiYKSXrs8jUo3faSe5WHOSEFHGQhohttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205101https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205101https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=O1c1_6ppNGjkeqX3NpFbc6SDHpC4LvJ3raSYpJxJO24https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=odoRpZQhVRIN1YvKBu0w3IYKdZGOes2MPmObUbwXTeshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=FU4G9xUnGob2FfcMsdN7jEkWc0MdSFnRrYUv18rnzSMhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=e9KeM486N3Fn4NfMF8ENlO9CugUhlWhHCoMciipxIIIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=4WJ-IHNUQQXM6iAiYKSXrs8jUo3faSe5WHOSEFHGQhohttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205101https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205101https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch


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Ies this is what ) was looking for )t demonstrates that there is successful communication

between the upstream switch and the problematic switch "o the =uestions in this thread

about where interfaces configured correctly, were the trunks set up correctly, were the right

7A9s allowed on the trunk, etc are all answered now !e ha6e successful communication

(he ne:t test ) would like to do is to see if the problematic switch can arp and ping- to the

interface address of the upstream switch

E(E

Dick

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https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=3bhRlYqICdtDTVeeWcHgaDjM0BQmNKEE6bvC71IukBghttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=di2SdjX5WD91BlLeEPF5md_2CTM1lSrXhsToK1rEmXshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=0a1dtGUMJ6u9jwU82NIaWsX7jXUfhsXL8m2DVLEKapohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Gu6f3iyUj3dHYrCiSPIJ-151vNtqCJ5vRP4klfQZeyIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=kzH6HmjoPTi_xl1eStE3AGrw7aRrwFGqlQubEPcOQHMhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205511https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205511https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=jdiALxUSJchHAJztLDXUTery-ED-QPygv_zYuLoCAM0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=o5xfWacC-H2A-V8lKce50WLFG6ITt8cUs0pY7FpfE74https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=GqtjponT3ayl71FnUYlpXFADe6Sq0tjW14jzkGOSrPohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=xDFYk8Vfydrdj986D-uRcoR29l1d_k62GmJla89zlKohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=e5mI5hriWkhBqR_1lr4biuybHsIx_JXd_bjyXCsk6bwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=3bhRlYqICdtDTVeeWcHgaDjM0BQmNKEE6bvC71IukBghttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=di2SdjX5WD91BlLeEPF5md_2CTM1lSrXhsToK1rEmXshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=0a1dtGUMJ6u9jwU82NIaWsX7jXUfhsXL8m2DVLEKapohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Gu6f3iyUj3dHYrCiSPIJ-151vNtqCJ5vRP4klfQZeyIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=kzH6HmjoPTi_xl1eStE3AGrw7aRrwFGqlQubEPcOQHMhttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205511https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8205511https://supportforums.cisco.com/users/rburtshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=jdiALxUSJchHAJztLDXUTery-ED-QPygv_zYuLoCAM0https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=o5xfWacC-H2A-V8lKce50WLFG6ITt8cUs0pY7FpfE74https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=GqtjponT3ayl71FnUYlpXFADe6Sq0tjW14jzkGOSrPohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=xDFYk8Vfydrdj986D-uRcoR29l1d_k62GmJla89zlKohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=e5mI5hriWkhBqR_1lr4biuybHsIx_JXd_bjyXCsk6bw


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)m unable to ping the upstream switches elow is the arp table from the problematic switch

)nternet +0+20+02 0 )ncomplete AD'A

)nternet +0+20++0 0 )ncomplete AD'A

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) am a bit surprised at this ut ) belie6e that it is =uite helpful "omething is pre6enting the

switch from arp to what should be locally connected addresses !ould you turn on debug arp,

try the ping, and post the output of the debug8

)t might also be helpful to turn on debug arp on the upstream switch, try ping from the

problematic switch, and post output to see if the arp gets to the upstream switch

)t would seem that either the problematic switch is not sending the arp re=uest or that the

upstream is not sending the reply (hese tests should show which it is

E(E
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21/39

Dick

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Eere is the arp debug from the problematic switch to the G

CE)#35$0#%$0%Nping +0+20+

(ype escape se=uence to abort

"ending 5, +00#byte )CF' .chos to +0+20+, timeout is % seconds1

Jan %3 0K13+10+$$4 C"(1 )' AD'1 creating incomplete entry for )' address1 +0+20+

interface 7lan+

Jan %3 0K13+10+$$4 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

Jan %3 0K13+10+$$4 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +050++4 000000000000 7lan+

Jan %3 0K13+10%$43 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+103$4% C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +050++4 000000000000 7lan+

Jan %3 0K13+103$K0 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

Jan %3 0K13+10&$K4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+10&$K4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+105$23 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

Jan %3 0K13+10$400 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+104$43 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +050++4 000000000000 7lan+Jan %3 0K13+104404 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=W6f4VenWxdJnLfJW73TsYNjZzEL4PxhmU_NHr_j1bQwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=5AaHTR1j0-sZMuc3GDusYJZlJjWdeGqsk4QGbUlI6Pwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=hra3urnYeVFUYDyAtpvvHMuqlcSzMcjZmJhlVKSSpAQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OiM_FNL4USqbYKDDQrQn46L6Zu1mcZV4Hy3YrM0ZGtchttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=wGyTA7e-T_DfW_uTOEXELtRincmyCAOI3fiHBLQv5_Ahttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8206096https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8206096https://supportforums.cisco.com/users/foleyaccthttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=W6f4VenWxdJnLfJW73TsYNjZzEL4PxhmU_NHr_j1bQwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=5AaHTR1j0-sZMuc3GDusYJZlJjWdeGqsk4QGbUlI6Pwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=hra3urnYeVFUYDyAtpvvHMuqlcSzMcjZmJhlVKSSpAQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OiM_FNL4USqbYKDDQrQn46L6Zu1mcZV4Hy3YrM0ZGtchttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=wGyTA7e-T_DfW_uTOEXELtRincmyCAOI3fiHBLQv5_Ahttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8206096https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8206096https://supportforums.cisco.com/users/foleyacct


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dst +0+20+ 000000000000 7lan+

Jan %3 0K13+104404 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+10K4+3 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+1024%0 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

Jan %3 0K13+1+04%4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+Jan %3 0K13+1+04%4 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+1++433 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

Jan %3 0K13+1+%4&0 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+1+34&$ C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

Jan %3 0K13+1+34&$ C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+1+&453 C"(1 )' AD' throttled out the AD' De=uest for +0+20+

Jan %3 0K13+1+5$4$ C"(1 )' AD'1 creating incomplete entry for )' address1 +050++4

interface 7lan+

Jan %3 0K13+1+5$4$ C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0, dst +050++4 000000000000 7lan+

Jan %3 0K13+1+54$0 C"(1 )' AD'1 sent re= src +0+20++% 00+b0c4c+3&0,

dst +0+20+ 000000000000 7lan+

"uccess rate is 0 percent 05-

!hen ) tried to ping the problematic switch from an upstream switch, ) did not get any debug

messages

!hen ) pinged the G from the problematic switch and had debugging enabled on an

upstream switch, ) was seeing some log entries in the upstream switch

Jan %3 0K13$1%$+02 C"(1 )' AD'1 rc6d re= src +0+20++% 00+b0c4c+3&0, dst +050++4

7lan+

Jan %3 0K13$1%$+23 C"(1 )' AD'1 rc6d re= src +0+20++% 00+b0c4c+3&0, dst +0+20+

7lan+

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https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xh-nhed5XsjtwiwcAkzgMbKFIdyHvjXKtcE7SzTcfgYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=2DxBJ-G8nkdq9tN24NOUUQviNWbIapE7HXtHNSDFYvwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=xPBq_TdxU6sAvIJSyf_U_cJi4Cy-M8gb8yGpCwz90E4https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Yg242v4qlvr3OkMGFCNxshZ8U1RROXTbJ9wOoeVOvsshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=TIUagBXAQCHEchreAN-cMEwqawcCtYtltne_JiIN2kchttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208286https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208286https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Xh-nhed5XsjtwiwcAkzgMbKFIdyHvjXKtcE7SzTcfgYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=2DxBJ-G8nkdq9tN24NOUUQviNWbIapE7HXtHNSDFYvwhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=xPBq_TdxU6sAvIJSyf_U_cJi4Cy-M8gb8yGpCwz90E4https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Yg242v4qlvr3OkMGFCNxshZ8U1RROXTbJ9wOoeVOvsshttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=TIUagBXAQCHEchreAN-cMEwqawcCtYtltne_JiIN2kchttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208286https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208286


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Charlie,

) know you/6e rebuilt the config on the switch (ake my earlier suggestion and remo6e the

"7) interface 6lan +- and re#add it if you can as it/s not working, i wont do any harm right

now

Degards

@@@@@@@@@@@@@@@@@@@@@@@@@@

http1wwwrConfigcom


needs


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) can/t remo6e it completely since it is 6lan + ) remo6ed the )' address, shutdown the port,

added the )' address, and enabled the port again and it is not working ) also tried gi6ing the

6lan interface a different )', and i get the same result

"ee Fore
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*dd, i can remo6e it on some lab kit i ha6e

A"!Nconf t

.nter configuration commands, one per line .nd with C9(P

A"!config-Nint 6lan +

A"!config#if-Nip add ++++ %55%55%550

A"!config#if-Nno shut

A"!Nsh ip int bri


7lan+ ++++ I." manual up up

A"!Nconf t

.nter configuration commands, one per line .nd with C9(P

A"!config-Nno int 6lan +

A"!Nsh run int 6lan +
https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=5TwATliFcre30n_JFbR4vU7wLo0wJZo-uCi9gm34JFohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=BKM7_tlUsNO-wTxlY_ZidlX9w7-bMcL1Ry6iGum4ZA4https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=_Cv8IHcSOdOgZTugeJQthLieUPYtxmByDKnEMECP0fYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=J4wLNsoHjj3zOIgbd9_QDnjPDLQK44VOeTcajvzaDiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OJ3VRdGJuXFMchY4IXGKV1oIaxrJTiy-Cw7m90wR0y4https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/users/stephenstackhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=5TwATliFcre30n_JFbR4vU7wLo0wJZo-uCi9gm34JFohttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=BKM7_tlUsNO-wTxlY_ZidlX9w7-bMcL1Ry6iGum4ZA4https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=_Cv8IHcSOdOgZTugeJQthLieUPYtxmByDKnEMECP0fYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=J4wLNsoHjj3zOIgbd9_QDnjPDLQK44VOeTcajvzaDiQhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=OJ3VRdGJuXFMchY4IXGKV1oIaxrJTiy-Cw7m90wR0y4https://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208391https://supportforums.cisco.com/users/stephenstack


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R )n6alid input detected at // marker

A"!Nsh ip int bri


@@@@@@@@@@@@@@@@@@@@@@@@@@

http1wwwrConfigcom


needs


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paul dri6er3 years ago

Charile,

rom this problem switch upto the cores # where in that path are pings succesfull # what switch is able to ping

the cores8

res

'aul

"ee Fore

+
http://www.rconfig.com/https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=9R7e58MPt-uwm097OqraCv_3mbDe7847WkorqlZV51Qhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=72wXfpQyqrZZRJPcwj8lqFqM8eWGYDvVEkV5dw81XUIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Drtexmrn8Louck7fy4fxIWa6W2te6ydyeNrr7Tg33vYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=12C1IfhsBQ2orO0hFYjhvigD6pQYI--VWiLSVhfEvw8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=rEc-PoWj08lIg_ML30FFhoM9nIUJs1kTQP0GnoOzfBshttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/users/pdriverhttps://supportforums.cisco.com/users/pdriverhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=urdc3LLQTgWJu7iIJhs0KbWpU6YPDPAkSZO_J3V9AEchttp://www.rconfig.com/https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=9R7e58MPt-uwm097OqraCv_3mbDe7847WkorqlZV51Qhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=72wXfpQyqrZZRJPcwj8lqFqM8eWGYDvVEkV5dw81XUIhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=Drtexmrn8Louck7fy4fxIWa6W2te6ydyeNrr7Tg33vYhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=12C1IfhsBQ2orO0hFYjhvigD6pQYI--VWiLSVhfEvw8https://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=rEc-PoWj08lIg_ML30FFhoM9nIUJs1kTQP0GnoOzfBshttps://supportforums.cisco.com/user/login?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/user/register?destination=discussion/11714716/unable-pingtelnet-management-interface-switch%23comment-8208436https://supportforums.cisco.com/users/pdriverhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switchhttps://supportforums.cisco.com/discussion/11714716/unable-pingtelnet-management-interface-switch?rate=urdc3LLQTgWJu7iIJhs0KbWpU6YPDPAkSZO_J3V9AEc


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rom the problematic switch, ) can only ping its 7A9 interface, ) can/t ping anything

upstream from it rom the upstream switches, ) can ping the default gateway but not the )'

of the problematic switch

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paul dri6er3 years ago

*kay from the good switch directly attached to the problem switch, and the problem switch

can you post1
https://supportforums.cisco.com/discussion/11714716/unab

Unable to Ping Dlink Switch

Documents

Transcript of Unable to Ping Dlink Switch