Network Infrastructure
15
24 June 2022 © University of Reading 2006 www.reading.ac. uk Network Infrastructure IT Supporters Update – 26 June 2007
description
Network Infrastructure. IT Supporters Update – 26 June 2007. Contents. Network overview Server connectivity upgrade Wireless network changes Subnet changes DNS and DHCP infrastructure. Network overview. Two separate networks readingConnect (for halls of residence) Campus network - PowerPoint PPT Presentation
Transcript of Network Infrastructure
24 April 2023 © University of Reading 2006 www.reading.ac.uk
Network InfrastructureIT Supporters Update – 26 June 2007
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Contents• Network overview• Server connectivity upgrade• Wireless network changes• Subnet changes• DNS and DHCP infrastructure
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Network overview• Two separate networks
– readingConnect (for halls of residence)– Campus network
• Both networks share common border area• Focus on campus network
– Each building connected at a minimum of 1Gbit/s– Except for Bulmershe and halls of residence
• New router to be installed at Bulmershe to make better use of existing switches and infrastructure
• Halls of residence too far away for more than 100Mbit/s
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Network overview• Border network forms connection between campus
network, readingConnect and JANET• Two JANET connections
– Each 1Gbit/s over long-range fibre– Diverse routes– Endpoints over 1.5Km apart
• Fully resilient• Traffic split across both links during normal
operation– Campus traffic one way– readingConnect traffic goes the other
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Network overview• 10616 IP addresses in use by 8964 unique hosts• 1844 hosts registered but not seen on network
since Feb– These will be removed at the end of July– A list will be distributed to IT Supporters at start of July
• Monthly stats (2 hour average) show:– 92.81Mbit/s peak traffic flow from JANET to campus– Average flow of 27.17MBit/s inbound and 15.39MBits/
outbound– 95th percentile is 73.02Mbit/s
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N e t S c r e e n – 5 0
7To put your footer here go to View > Header and Footer
Server connectivity upgrade
• Introduction of 10Gbit Ethernet into the core• Two new (large) switches to be installed into ITS
machine rooms– Each switch will have 10GBit/s to each core router (20Gbit/s)– Two switches connected to each other at 20Gbit/s– Each switch configured to connect up to 240 ports at 1Gbit/s– Switches configured as redundant pair for routing server
VLANs• Two small switches will provide secondary
connections– To be used by important systems only (Exchange, etc)
8To put your footer here go to View > Header and Footer
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at
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2 51 2 62 2 73 2 84 295 306 317 328 239 3410 3511 361 2 371 3 3 81 4 3 915 4 016 4117 4218 4319 4420 4521 4622 4723 4824
ab MSM-G8X 41211
ERR
ENV
1000BASE-X
1
5 8
4
MSTR/DIAG
SYS/STATCOMPACT F LASH
ACONSOLE
D RMGMT
4 83 72 61 5
MSM-G8X 41211
ERR
ENV
1000BASE-X
1
5 8
4
MSTR/DIAG
SYS/STATCOMPACT F LASH
ACONSOLE
D RMGMT
4 83 72 61 5
Dia
gS
tat
G4 8T a 41 5 15
2 51 2 62 2 73 2 84 295 306 317 328 239 3410 3511 361 2 371 3 3 81 4 3 915 4 016 4117 4218 4319 4420 4521 4622 4723 4824
ab
Diag
Stat
10GBASE-X1 32 4
10G4X 416 11
Diag
Stat
10GBASE-X1 32 4
10G4X 416 11
1 2 3 4 A B 5 6 7 8
CONSOLE
MGMT
COMPACTFLASH
MSM-1XL60016
MS
TREN
V
SYS
ERR
CONSOLE
MGMT
COMPACTFLASH
MSM-1XL60016
MS
TREN
V
SYS
ERR
10G6X61050
DS
1
2
3
4
5
6
1
2
3
4
5
6
G60X61010
1
31
2
32
3
33
4
34
5
35
6
36
7
37
8
38
9
39
10
40
11
41
12
42
13
43
14
44
15
45
16
46
17
47
18
48
19
49
20
50
21
51
22
52
23
53
24
54
25
55
26
56
27
57
28
58
29
59
30
60
30 60
311
DS
G60X61010
1
31
2
32
3
33
4
34
5
35
6
36
7
37
8
38
9
39
10
40
11
41
12
42
13
43
14
44
15
45
16
46
17
47
18
48
19
49
20
50
21
51
22
52
23
53
24
54
25
55
26
56
27
57
28
58
29
59
30
60
30 60
311
DS
G60T61030
DS
1
31
2
32
3
33
4
34
5
35
6
36
7
37
8
38
9
39
10
40
11
41
12
42
13
43
14
44
15
45
16
46
17
47
18
48
19
49
20
50
21
51
22
52
23
53
24
54
25
55
26
56
27
57
28
58
29
59
30
60
30 60
311
G60T61030
DS
1
31
2
32
3
33
4
34
5
35
6
36
7
37
8
38
9
39
10
40
11
41
12
42
13
43
14
44
15
45
16
46
17
47
18
48
19
49
20
50
21
51
22
52
23
53
24
54
25
55
26
56
27
57
28
58
29
59
30
60
30 60
311
1
2
3
4
7
8
9
10
6B
5A
Dia
gS
tat
G48 Ta 41 5 1 5
251 262 273 284 295 306 3 17 3 28 239 3410 3511 3612 3713 3814 3915 4016 411 7 4 21 8 4319 4 42 0 4 521 4622 4723 4824
ab
Dia
gS
tat
G48 Ta 41 5 1 5
251 262 273 284 295 306 3 17 3 28 239 3410 3511 3612 3713 3814 3915 4016 411 7 4 21 8 4319 4 42 0 4 521 4622 4723 4824
ab
Dia
gS
tat
G48 Ta 41 5 1 5
251 262 273 284 295 306 3 17 3 28 239 3410 3511 3612 3713 3814 3915 4016 411 7 4 21 8 4319 4 42 0 4 521 4622 4723 4824
ab
Dia
gSt
at
G48 Ta 41 5 1 5
251 262 273 284 295 306 3 17 3 28 239 3410 3511 3612 3713 3814 3915 4016 411 7 4 21 8 4319 4 42 0 4 521 4622 4723 4824
ab MSM-G8X 41211
ERR
ENV
1000BASE-X
1
5 8
4
MSTR/DIAG
SYS/STATCOMPACT FLASH
ACONSOL E
D RMGM T
4 83 72 61 5
MSM-G8X 41211
ERR
ENV
1000BASE-X
1
5 8
4
MSTR/DIAG
SYS/STATCOMPACT FLASH
ACONSOL E
D RMGM T
4 83 72 61 5
Dia
gS
tat
G48 Ta 41 5 1 5
251 262 273 284 295 306 3 17 3 28 239 3410 3511 3612 3713 3814 3915 4016 411 7 4 21 8 4319 4 42 0 4 521 4622 4723 4824
ab
Diag
Stat
10GBASE-X1 32 4
10G4X 41611
Diag
Stat
10GBASE-X1 32 4
10G4X 41611
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
CONSOL E
49 50
MGMT
PORT 49
PORT 50
Extreme Networks Summit48siR
3804lpine
1
2
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4
DIAG
ST ATUS
AB
PSU CONSOL E MODEM MGM T
PCM CIALINK\ACT IVE
SMM45014
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- ACTIVIT Y
- LINK OK
- DI SABL ED1 2 3 4
GM-4X45112
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ST AT US
1000 BASE-X
4321
GREEN
AMBER
FLASHING ORANGE
- ACTIVIT Y
- LINK OK
- DI SABL ED1 2 3 4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
CONSOLE
49 50
MGMT
PORT 49
PORT 50
Extreme Networks Summit48s iR
3804lpine
1
2
3
4
DI AG
ST ATUS
A
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PSU CO NSOL E MODEM MGMT
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10 00 BASE-X
4321
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- ACTIVIT Y
- LINK OK
- DI SABLED1 2 3 4
GM-4X45112
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10 00 BASE-X
4321
GREEN
AM BER
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- ACTIVIT Y
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- DI SABLED1 2 3 4
CONSOLE
FAN
PSU-i
PSU-E
St ackMGMT
SolidBlin kin g Extreme Networks Summit 400-48tR R
1 5
2 6
3 7
4 8
1x 2x 3x 4x 5 76 8 9 11 13 1510 12 14 161 32 4 25 27 29 3126 28 30 3217 19 21 2318 20 22 24 41 43 45 4742 44 46 4833 35 37 3934 36 38 40
Extreme NetworksSummit EPS-T
CONSOL E
FAN
PSU- i
PSU- E
Sta ckMGMT
So li dBlinking Extreme Networks Summit 400-48tR R
1 5
2 6
3 7
4 8
1x 2x 3x 4x 5 76 8 9 11 13 1510 12 14 161 32 4 25 27 29 3126 28 30 3217 19 21 2318 20 22 24 41 43 45 4742 44 46 4833 35 37 3934 36 38 40
Extreme NetworksSummit EPS-T
FWE-WK FWE-EG
DMZ-WK
SLB-WK SRV-WK SRV-EG
SRV-SEC-WK SRV-SEC-EG
SLB-WK
DMZ-EG
9To put your footer here go to View > Header and Footer
Server connectivity upgrade
10To put your footer here go to View > Header and Footer
Guest / wireless network changes
• Deployment of JANET Roaming / Eduroam– Web-based redirect no longer permitted to be
advertised as eduroam name– New wireless network across campus to sit alongside
existing service• SSID ‘eduroam’• Requires 802.1x and WPA / WPA2 encryption• Set up and forget – works everywhere that has
Eduroam
11To put your footer here go to View > Header and Footer
Guest / wireless network changes
• Changes to existing ‘rdg.ac.uk’ service– Will move outside firewall
• But retain protection from Internet hosts• Same set of base services as for JANET Roaming• Additional resilience through second BlueSocket device
– Web-based login will accept eduroam / JANET Roaming credentials
– Proposed service changes Summer 2008:• Users will no longer be able to sign on with plain
username– Must use ‘[email protected]’ instead
• Native CIFS access will be turned off – shares still accessible through NetDrive service (WebDAV gateway)
12To put your footer here go to View > Header and Footer
Guest / wireless network changes
• New IP address ranges:– 134.225.24.0 – 134.225.27.255 for JANET Roaming
service– 134.225.28.0 – 134.225.31.255 for plug-in and
‘rdg.ac.uk’ service• Old address ranges to be removed by
September 2007:– 134.225.8.0 – 134.225.15.255
13To put your footer here go to View > Header and Footer
Subnet changes• Psychology to complete move to .114 subnet• Soil and Plant Science to move to own subnets• Systems Engineering to vacate .4 and .56
subnets• Student subnets in Careers, Chaplaincy and
RUSU to be separated
14To put your footer here go to View > Header and Footer
DNS / DHCP infrastructure• Currently two central servers
– Sun hardware– Open source software– A bunch of in-house scripts to generate DNS zones– More in-house scripts to generate DHCP configuration– Painful to manage– Relatively slow turn-around for IP address allocation
15To put your footer here go to View > Header and Footer
DNS / DHCP infrastructure• New Infoblox 1550 appliances (HA pair)
– Take over as master DNS database– Replace Sun boxes for DHCP– GUI for managing IP address and hostname allocation– Should give faster turn-around on IP allocations– Possibility of delegation (at least read-only) to IT
supporters• Expansion of DNS topology
– Existing Sun boxes become dedicated DNS cache servers– Addition of DNS servers into DMZ for best practise– Possible additional IT Services managed DNS secondary
server at off-site co-location facility
