IP in IPA for Newcomer

7/29/2019 IP in IPA for Newcomer

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1 Nokia Siemens Networks Presentation / Author / Date

For internal use

IP Use Cases in IPA2800

May 26, 2008

Wang Gang & Xu Jun


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For internal use

Contents

Overview of IP in RNC/MGW

Protocols, Services, Components

O&M plane, Control plane, User plane

IP Connectivity in RNC/MGW

Use Cases in RNC/MGW

IP configuration

Redundant LAN

IPoA EIPU

Use cases in O&M plane

Use cases in Iu-PS user plane

Use cases in Iu-CS & Nb user plane

Use cases in IP based Iub/Iur

Use cases for IP connectivity Multiple IP networks

Q&A


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For internal use

Overview: TCP/IP Protocols and Services

IPv4

TCP UDP

Application Application Application

IPv6

TCP6 UDP6

Link layer

socket layer

ICMP IGMP

IP

socket layer

Ethernetinterface

IP over ATM

app

TCP UDP

ARP

app

app

FTP

TELNETHTTP

DNS

OSPF

IPSec


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For internal use

PDH SDHEthernet

IP

Architecture of DataCommunication Network

RNC 3G MSC

TCP/UDP

ATM / AAL5DCNProtocols

Management Protocols

EMTFTP/NFS

Telnet

SNMP

NEMUEthernetSwitch

OMU

OtherUnit

BS

NMS

Router+

Firewall

Disk


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For internal use

SCTP in 3G network (for SIGTRAN)

CS CORE

3G RAN

2G BSS

Iu-CS

Mc

Nb

MGW

ATM or IPbackbone

BSC

A

BTS Iub

PS CORE

Iu-PS

Mc

BTS

BTS

Iur

MGW

RNC

RNC

MSCServer

Iub

SS7 overTDM

SS7 overATM

SS7 overATM/IP

NBAPAAL2SIG RANAP

AAL2SIG

RNSAPAAL2SIG

SAAL-UNI

SS7 overTDM

BSSAP

AAL2SIG

SIGTRANSS7/H.248

over SCTP

SS7 overATM/IP

RANAPBSSAP ISUP

MGCP/Megaco

SS7 overATM/IP

RANAP

Internet

SGSN GGSNIP

backbone

SIGTRAN

SS7/H.248over SCTP

1. Mc (MSS

MGW): H.248/MEGACO over SCTP2. IUA interface (PBX MGW/MSS): from U43. Iu-PS (RNC SGSN): RANAP over SCTP from RN2.24. Iu-CS (RNC MGW): RANAP over SCTP from RN2.25. Iur (RNC RNC): RNSAP over SCTP from RN2.26. Iub (RNCNodeB): NBAP over SCTP from RN4.0


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For internal use

3G network user plane

CS CORE

3G RAN

2G BSS

Iu-CS

Mc

Nb

MGW

ATM or IPbackbone

BSC

A

BTS Iub

PS CORE

Iu-PS

Mc

BTS

BTS

Iur

MGW

RNC

RNC

MSCServer

Iub

FPRTP/RTCP

FP

RTP/RTCP

GTP

Internet

SGSN GGSNIP

backbone


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For internal use

RNC site connections (with NPGE or NPS1)

Internal LAN: ESA24 connected with OMU, OMS (NEMU), NPGE (backplane FE port)and NPS1 (backplane FE port).

ICSU IP traffic including the LCS traffic is transport to the network interface units (NPGE orNPS1) through the internal ATM network.

If no NPGE is configured in the network element, the NPS1 can be configured to route theIP based LCS traffic to the edge router via the ESA24.


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For internal use

IP Connectivity in MGW (With EIPU)


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Contents

Overview of IP in RNC/MGW

Protocols, Services, Components

O&M plane, Control plane, User plane

IP Connectivity in RNC/MGW

Use Cases in RNC/MGW

IP configuration

Redundant LAN

IPoA EIPU

Use cases in O&M plane

Use cases in Iu-PS user plane

Use cases in Iu-CS & Nb user plane

Use cases in IP based Iub/Iur

Use cases for IP connectivity Multiple IP networks

Q&A


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For internal use

Network interfaces

< ZQRI:OMU,0::YES;

INTERROGATING NETWORK INTERFACE DATA

IF ADM IF ADDR

UNIT NAME STATE MTU PRIORITY TYPE TYPE IP ADDRESS

--------- ------ ------ ---- --------- ---- ---- -----------------------

OMU-0 EL0 UP 1500 - L 10.56.117.9/25

COMPUTER UNIT'S ALL ATTACHED NETWORK INTERFACES:

LOOPBACK: LO0

ETHERNET: EL0EL1

ATM: AA0- AA511

COMMAND EXECUTED

Computer unit can haveseveral different kind ofnetwork interfaces: ethernet,IPoA, loopback...

Network interface can haveseveral IP addresses.

Computer units attachednetwork interfaces can beseen by:

> ZQRI:::YES;


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For internal use

Physical IP address

normal IP address

is assosiated with the physical computer unit and one networkinterface

is independent of the units state


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For internal use

Physical IP address: example

Configure physical IP address:

< ZQRN:OMU,0:EL0:172.16.0.6,P;

172.16.0.6

OMU-0

(WO) el0

el1

OMU-1

el0

el1

2. Physical IP address stays in thesame physical computer uniteven if the units state changes.

Gratuitous ARP is sent toannounce the location of the IPaddress.

IP address is configured to theel0 network interface in OMU-0.

(WO)


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For internal use

Logical IP address

Logical IP address is associated with a working-state functionalunit.

It inherits the redundancy scheme used with the functional unit itwas configured to.

Thus, there are non-redundant, 2N-redundant and logical IP

addresses.

Logicality is a proprietary (Nokia-specific) attribute of an IPaddress.

Set/defined when IP addresses are configured via MML interface:

ZQRN:OMU:EL0:172.16.0.6,L;

Implemented in the IP layer (no moving MAC addresses etc.)


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For internal use

Logical IP addresses in 2N functional units

1. Configure logical IP address:

< ZQRN:OMU:EL0:172.16.0.6,L;172.16.0.6

OMU-0

(WO) el0

el1

OMU-1

el0

el1

2. Switchover from OMU-0 toOMU-1:

172.16.0.6

Logical IP address is deleted fromthe old WO-unit

and is configured to the newWO-unit

Gratuitous ARP is sent toannounce the new location ofthe IP address.

Gratuitous ARP is sent toannounce the location of the IPaddress.

IP address is configured to theWO-unit.

(WO)


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For internal use

Logical IP addresses in N+1 functional units

Configure logical IP addresses:

< ZQRN:ISU,0:EL0:172.16.0.2,L;< ZQRN:ISU,1:EL0:172.16.0.3,L; 172.16.0.2

2. Switchover from ISU-0 to ISU-2: Logical IP address is deleted from

the old WO-unit....

and is configured to the newWO-unit and Gratuitous ARP issent to announce the new locationof the IP address.

IP addresses are configured to theWO-units and Gratuitous ARP issent to announce the location of theIP addresses.

ISU-0

el0

el1

ISU-1

el0el1

ISU-2

(SP) el0

el1

3. Now ISU-0 is backing (SP)unit, which can get any of thelogical IP addresses.

172.16.0.3

(SP)

172.16.0.2


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For internal use

Carrier sense IP address

Can be used in computers with two integrated Ethernet devices (e.g.CCP10 PIU).

The carrier sense IP address is configured to both interfaces, but it isactive on only one interface at a time.

If the carrier signal is lost on the active interface, the IP address is

reconfigured to the other (backing interface).

Note that also logical IP addresses can be configured to be carriersense IP addresses.

Implementation is based on Ethernet driver's ability to supervise the

link status.

C i IP dd


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For internal use

Carrier sense IP address

Configure carrier sense (physical) IPaddress:

< ZQRN:OMU,0:EL0:172.16.0.2,P;

< ZQRN:OMU,0:EL1:172.16.0.2,P;

2. Link failure (lost carrier)detected:

IP address is deleted from el0

and is configured to el1, andGratuitous ARP is sent to

announce the new location of theIP address.

IP address is configured to el0interface in OMU-0, and Gratuitous

ARP is sent to announce thelocation of the IP address.

el1 interface will back that IPaddress.

OMU-0

el0

el1

OMU-1

el0

el1

172.16.0.2

172.16.0.2


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For internal use

Carrier sense logical IP addresses

Configure carrier sense logical IPaddress:

< ZQRN:OMU:EL0:172.16.0.2,L;

< ZQRN:OMU:EL1:172.16.0.2,L;

2. Link failure (lost carrier)detected:

IP address is deleted from el0,configured to el1 and Gratuitous

ARP is sent to announce the newlocation of the IP address.

IP address is configured to el0interface in OMU-0, and Gratuitous

ARP is sent to announce thelocation of the IP address.

el1 interface will back that IPaddress.

OMU-0

(WO) el0

el1

OMU-1

el0

el1

172.16.0.2

172.16.0.2

3. Switchover will move the IPaddress to new WO-unit.

172.16.0.2(WO)


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For internal use

A Redundant LAN

CPU 1

switch 0

if 0

router 0 router 1

'SP-LAN'

backbone

TCP/IP

N1.3

application eg. GTP

N1.1(M)

N1.1(B)

if 1

switch 1

CPU 2

if1

TCP/IP

N1.4

application eg. GTP

if 0

next hop

router =

N1.1

next hop

router =

N1.2

N1.2(B)

N1.2(M)

N2.1 N2.2

Virtual router #1

addr = N1.1

Virtual router #2

addr N1.2

'WO-LAN'

(M) = Master virtual router

(B) = Backup virtual router

'inter-switch

link'

P t P i it (f RN3 0 d U4)


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For internal use

Port Priority (from RN3.0 and U4)

NEMU

OMU 0

OMU 1

ISU 0

ISU 3

ISU 4

ISU 6

ISU 7

ISU 10

ESA 0

ESA 1

HSRP

O&M LAN

Control

LAN

Backbone

P

P

P

P

P

P

P

P

50% load

50% load

E l ESA 1 F il


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For internal use

Example: ESA 1 Failure

NEMU

OMU 0

OMU 1

ISU 0

ISU 3

ISU 4

ISU 6

ISU 7

ISU 10

ESA 0

ESA 1

H

SRP

O&M LAN

Control

LAN

Backbone

P

P

P

P

P

P

P

P

100% load

Example ESA 1 Recovery


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For internal use

Example: ESA 1 Recovery

NEMU

OMU 0

OMU 1

ISU 0

ISU 3

ISU 4

ISU 6

ISU 7

ISU 10

ESA 0

ESA 1

HSRP

O&M LAN

Control

LAN

Backbone

P

P

P

P

P

P

P

P

50% load

50% load

Example of IPoA configuration


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For internal use

Example of IPoA configuration

Example: Steps to configure external IPoA via NIS


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For internal use

Create phyTTP, ATM IF and access profileZYDC:1:SET=0::;ZLAC:1:UNI,1,UNLOCKED;

ZLAF:1:8:14;

Create VPLtp (20) to the ATM interface 1ZLCC:1,VP,20,,VC:::C,,,C1:,,,,800,USEC::5000,CPS:STATE=UNLOCKED;

Create VCLtp to the ATM interface 1 and to VP 20ZLCC:1,VC,20,30::C,,,C1:C,,,C1:1000,USEC,,,800,USEC,,:1000,CPS:1000,CPS:STATE=UNLOCKED,;

Create IPoA connectionZQMF:OMU,,L:AA2:1,20,30:2:IPOAM;

Configure IP-address to interfaceZQRN:OMU,:AA2:189.151.0.1,L:30:189.151.0.2;

Example: Steps to configure external IPoA via NIS

EIPU


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For internal use

EIPU

Enhanced Interface Protocol Unit

The main emphasis of the unit is to provide HW assisted IP packetprocessing including QoS support for packet data services andenhanced real time IP support for packet data networks. The unit iscapable to support IPv4 and IPv6 protocols over ATM, SDH/Sonet

and Ethernet interfaces.

EIPU Variants


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For internal use

EIPU VariantsNPGE(P) NP2GE

Ethernet interface unit with 2* GE ports (optical/electrical), protected

Replaces IP-NIU in MGW, GTPU + NIS1 in RNC

NPS1(P) NP8S1

ATM/POS interface unit with 8* STM-1 ports (optical), protected

Replaces NIS1 in RNC/MGW

NPSA(P) NP4S1C

Channelized ATM/IP interface unit with 4* STM-1 ports (optical), protected

Replaces NIP1 in RNC

NPST(P) NP8S1C

Channelized TDM interface unit with 8* STM-1 ports (optical), protected

Replaces IWS1 in MGW

O&M DCN Network (With OSPF)


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For internal use

O&M DCN Network (With OSPF)

Example: O&M connections using EIPU


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For internal use

Example: O&M connections using EIPU

Iu-PS Protocol stack (with EIPU)


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For internal use

Iu PS Protocol stack (with EIPU)

ATM

IP

GTP GTP

UDP

ATM

GTP

ATM ATM

IP

GTP

UDP

3G-SGSNNPS1DMPG

SNAP

LLC

AAL5AAL5

SNAP

LLC

GTP appl.

GE

IP

GTP GTP

UDP

ATM

GTP

ATM GE

IP

GTP

UDP

3G-SGSNNPGEDMPG

GTP appl.

Iu-CS & Nb (with EIPU)


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For internal use

Iu CS & Nb (with EIPU)

ATM

IP

UDP

ATM

RTP/RTCP

ATM ATM

IP

RTP/RTCP

UDP

NPS1DMPG

SNAP

LLC

AAL5AAL5

SNAP

LLC

GE

IP

UDP

ATM

RTP/RTCP

ATM GE

IP

RTP/RTCP

UDP

NPGEDMPG

AAL5AAL5

AAL5AAL5

IP based Iub/Iur


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For internal use

IP based Iub/Iur

EIPU (NPGE)

Site router-VLAN

-Priority tagging-ID tagging

BTS

EthernetEthernet

ICSU

DMCU

NBAP

SCTP

AAL5

ATM

FP

AAL5

ATM

AAL5

ATM

UDP

IP

Ethernet

OMU

DCN

TCP

IPIP

Ethernet Ethernet Ethernet

MAC

VLAN

AAL5

ATM

IP

Ethernet

MAC

VLAN

MAC

VLAN

MACMAC

IP

Relay (FP)


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For internal use

SFU

NPGEP-

2

NPGEP-

3

Switching

moduleRouting

module

2n redundant

unit pair

WO

SP

TPG

DSP

MXU

TPG

DSP

IP Network

multilayer site switch

HSRP/VRRP


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For internal use

Switching

moduleRouting

module


SFU

NPGEP-

2

NPGEP-

3

2n redundant

unit pair

WO

SP

TPG

DSP

MXU

TPG

DSP

IP Network


HSRP/VRRP


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For internal use


SFU

NPGEP-

2

NPGEP-

3WO

SP

TPG

DSP

MXU

TPG

DSP

IP Network

X

Xmultilayer site switch

HSRP/VRRP


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For internal use

SFU

NPGEP-

2

NPGEP-

3

WO

SP

TPG

DSP

MXU

TPG

DSP

IP Networkswitchover


XX


HSRP/VRRP


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For internal use

SFU

NPGEP-

2

NPGEP-

3WO

SP

TPG

DSP

MXU

TPG

DSP IP Network 1

IP Network 2



HSRP/VRRP

HSRP/VRRP


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For internal use

SFU

NPGEP-2

NPGEP-

3WO

SP

TPG

DSP

MXU

TPG

DSP IP Network 1

IP Network 2



X

X

X

HSRP/VRRP

HSRP/VRRP


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For internal use

SFU

NPGEP-2

NPGEP-

3

WO

SP

TPG

DSP

MXU

TPG

DSP IP Network 1

IP Network 2



Xswitchover

HSRP/VRRP

HSRP/VRRP

Support for multiple IP networks (Example: RNC)


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For internal use

RNC

CN # N

CN # 1

CN # 2Iu-CS/PS (UP+CP)

Iu-CS/PS (UP+CP)

Iu-CS/PS (UP+CP)

IP i/f 0

IP i/f 1

IP i/f N

RNC # N

RNC # 1

Iur (UP+CP)

Iur (UP+CP)

BTS # 1

BTS # 2

BTS # N

Iub UP

Iub UP

Iub UP

Iu-CS/PS (UP+CP)

Example: IP Based Routes Network Configuration


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For internal use


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For internal use

Q&A

Thank you !

IP in IPA for Newcomer

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