Worldwide [change] |Account |Register |About Cisco
Guest

Hierarchical Navigation

Cisco IOS XR Software

Cisco IOS XR Network Examples

Downloads

Table Of Contents

Cisco IOS XR Network Examples

Changes to This Document

Topology Diagrams

Address Tables

Outputs of the show running-config Command

Base Configuration Viewed at P3

Initial Network Configuration Viewed on P3

Security Added on the Router

IS-IS

OSPF

iBGP

Multicast

MPLS

Summary of the Fully Configured Network

Verification Commands

Troubleshooting Commands

Additional References

Related Documents

Technical Assistance


Cisco IOS XR Network Examples

This document shows sample configurations for a network that is running Release 3.2 of the Cisco IOS XR software on routers in the network core. This document contains the following sections:

•Topology Diagrams

•Outputs of the show running-config Command, for:

–Base configuration

–With interfaces

–With security

–IS-IS

–OSPF

–iBGP

–Multicast

–Full configuration

•Verification Commands

•Troubleshooting Commands

Changes to This Document

Table 1 Changes to This Document

Revision
Date
Change Summary

OL-10361-01

April 2006

Initial release of this document.


Topology Diagrams

The examples in this document begin with the network topology illustrated in Figure 1. This network has six routers in the core. A core router could be a Cisco CRS-1 router or a Cisco 12000 Series Router, but all the core routers in this document are Cisco 12000 Series Routers. In Figure 1, the core router numbers are P1-P6. The network also contains edge routers labeled PE1-PE6.

In Figure 1, the topology diagram shows Packet-over-SONET/SDH (POS) interfaces.

Figure 1 Topology with POS Interfaces

In Figure 2, the topology diagram shows the added IP addresses and loopback0 addresses. The management network is 172.21.116.0/26, and 172.21.116.1 is a gateway off the management network.

Figure 2 Topology with Addresses and Loopback0s Added

The sections that follow include tables that list the values for POS interface IDs, IP addresses, and so on.

Address Tables

The tables in this section list the following types of addresses:

•Management Ethernet interfaces

•Loopback0 addresses

•Core routers

•Aggregation routers

•Loopback addresses

•POS IDs and IP addresses

•Intermediate System-to-Intermediate System (IS-IS) Network Services Access Point Addresses

The Management Ethernet addresses for the core routers appear in Table 2.

Table 2 Management Ethernet Addressing on P1-P6 

Router Number
RP0 MgmntEth Address
RP1 MgmntEth Address
IP Virtual Address

P1

172.21.116.10/26

172.21.116.11/26

172.21.116.12/26

P2

172.21.116.15/26

172.21.116.16/26

172.21.116.17/26

P3

172.21.116.20/26

172.21.116.21/26

172.21.116.22/26

P4

172.21.116.25/26

172.21.116.26/26

172.21.116.27/26

P5

172.21.116.30/26

172.21.116.31/26

172.21.116.32/26

P6

172.21.116.35/26

172.21.116.36/26

172.21.116.32/26


The addresses of the Management Ethernet interfaces on the aggregation routers appear in Table 3.

Table 3 Management Ethernet Addressing on PE1-PE6 

Router Number
GE0 MgmntEth Address

PE1

172.21.116.13/26

PE2

172.21.116.18/26

PE3

172.21.116.23/26

PE4

172.21.116.28/26

PE5

172.21.116.33/26

PE6

172.21.116.38/26


The Loopback0 address for each router appears in Table 4.

Table 4 Loopback0 Addresses 

Router Number
Loopback0 Address

P1

100.10.20.1/32

P2

100.10.20.2/32

P3

100.10.20.3/32

P4

100.10.20.4/32

P5

100.10.20.5/32

P6

100.10.20.6/32

PE1

100.10.1.11/32

PE2

100.10.2.11/32

PE3

100.10.3.11/32

PE4

100.10.4.11/32

PE5

100.10.5.11/32

PE6

100.10.6.11/32


The POS interface IDs and IP addresses for the core routers appear in Table 5.

Table 5 Interface and IP Addresses on Core Routers P1-P6 

Router Number
POS
IP Address

P1

0/3/0/0

142.50.32.1/24

 

0/4/0/0

142.50.32.1/24

 

0/4/0/1

142.50.32.1/24

 

0/4/0/2

142.50.32.1/24

 

0/4/0/4

142.50.32.1/24

 

0/4/0/5

142.50.32.1/24

 

0/4/0/6

142.50.32.1/24

P2

0/3/0/0

142.50.44.2/24

 

0/3/0/1

142.50.24.2/24

 

0/3/0/2

142.50.28.2/24

 

0/3/0/3

142.50.56.2/24

 

0/3/0/4

142.50.60.2/24

 

0/4/0/0

142.50.36.2/24

 

0/5/0/0

142.50.40.2/24

P3

0/3/0/0

142.50.4.3/24

 

0/3/0/1

142.50.24.3/24

 

0/3/0/2

142.50.12.3/24

 

0/4/0/0

142.50.16.3/24

P4

0/3/0/0

142.50.8.4/24

 

0/3/0/1

142.50.12.4/24

 

0/3/0/2

142.50.28.4/24

 

0/4/0/0

142.50.20.4/24

P5

0/3/0/0

142.50.64.5/24

 

0/3/0/1

142.50.68.5/24

 

0/3/0/2

142.50.56.5/24

 

0/4/0/0

142.50.20.48/24

P6

0/3/0/0

142.50.72.6/24

 

0/3/0/1

142.50.68.6/24

 

0/3/0/2

142.50.60.6/24

 

0/4/0/0

142.50.52.6/24


The POS interface IDs and IP addresses for the aggregation routers appear in Table 6.

Table 6 Interface and IP Addresses on Aggregation Routers PE1-PE6 

Router Number
POS
IP Address

PE1

3/0

142.50.32.11/24

PE2

3/0

142.50.44.22/24

PE3

3/0

142.50.4.33/24

PE4

3/0

142.50.8.44/24

PE5

3/0

142.50.64.55/24

PE6

3/0

142.50.72.66/24


The IS-IS network services access point (NSAP) addresses for the aggregation routers appear in Table 7.

Table 7 IS-IS NSAP Addresses 

Router Number
NSAP Address

PE1

49.0001.0000.0000.0001.00

PE2

49.0001.0000.0000.0002.00

PE3

49.0001.0000.0000.0003.00

PE4

49.0001.0000.0000.0004.00

PE5

49.0001.0000.0000.0005.00

PE6

49.0001.0000.0000.0006.00


Outputs of the show running-config Command

This section contains the show running-config output from the core router designated P3. (The form for the show running-config command typically is abbreviated to show run.) This section introduces progressive states of the network before the various protocols are enabled and then shows the network with after the protocols are added. These introductory descriptions have three parts:

•Base configuration

•Initial configuration of interfaces

•Security efforts

Base Configuration Viewed at P3

This section contains the show running-config output for the base configuration. 

RP/0/0/CPU0:P3# show running-config


hostname P3

interface MgmtEth0/0/CPU0/0

!

interface MgmtEth0/0/CPU0/1

!

interface MgmtEth0/0/CPU0/2

!

interface MgmtEth0/1/CPU0/0

!

interface MgmtEth0/1/CPU0/1

!

interface MgmtEth0/1/CPU0/2

!

interface POS0/3/0/0

!

interface POS0/3/0/1

!

interface POS0/3/0/2

!

interface POS0/4/0/0

!

end

Initial Network Configuration Viewed on P3

The initial network configuration tasks involve the configuration of the following:

•Data and time

•Management Ethernet interfaces

•Virtual IP addresses (IPv4), consisting of:

–172.21.116.12 on P1

–172.21.116.17 on P2

–172.21.116.22 on P3

–172.21.116.27 on P4

–172.21.116.32 on P5

–172.21.116.37 on P6

•Loopback0 addresses

•POS interfaces

The initial network configuration displayed by the show running-config command and viewed at router P3 (172.21.116.22) shows Management Ethernet interfaces, POS interfaces, and IP addresses. 

RP/0/0/CPU0:P3# show run


hostname P3

telnet ipv4 server max-servers 5

domain ipv4 host p1 172.21.116.12

domain ipv4 host p2 172.21.116.17

domain ipv4 host p4 172.21.116.27

domain ipv4 host p5 172.21.116.32

domain ipv4 host p6 172.21.116.37

ipv4 virtual address 172.21.116.22 255.255.255.192

interface loopback0

ipv4 address 100.10.20.3 255.255.255.255

!

interface MgmtEth0/0/CPU0/0

ipv4 address 172.21.116.20 255.255.255.192

!

interface MgmtEth0/0/CPU0/1

!

interface MgmtEth0/0/CPU0/2

!

interface MgmtEth0/1/CPU0/0

ipv4 address 172.21.116.21 255.255.255.192

!

interface MgmtEth0/1/CPU0/1

!

interface MgmtEth0/1/CPU0/2

!

interface POS0/3/0/0

ipv4 address 142.50.4.3 255.255.255.0

!

interface POS0/3/0/1

ipv4 address 142.50.24.3 255.255.255.0

!

interface POS0/3/0/2

ipv4 address 142.50.12.3 255.255.255.0

!

interface POS0/4/0/0

ipv4 address 142.50.16.3 255.255.255.0

!

controller SONET0/3/0/0

!

controller SONET0/3/0/1

!

controller SONET0/3/0/2

!

controller SONET0/4/0/0

!

route ipv4 0.0.0.0/0 172.21.116.1

end

Security Added on the Router

This section contains show running-config output after you add task groups, user groups, users, passwords, and the access control lists (ACLs) named blockacl and blockac2. Configuring task groups and user groups establishes access rights and operational capabilities for individual users, and each user needs a password before he or she can be authorized by the system to log in.

Note At this point in the configuration example, all POS interfaces have been addressed. 

RP/0/0/CPU0:P3# show run


hostname P3

logging console

telnet ipv4 server max-servers 6

domain ipv4 host p1 172.21.116.12

domain ipv4 host p2 172.21.116.17

domain ipv4 host p4 172.21.116.27

domain ipv4 host p5 172.21.116.32

domain ipv4 host p6 172.21.116.37

taskgroup igpadmin

task write rib

task write isis

task write ospf

!

taskgroup routeadmin

task write bgp

inherit taskgroup igpadmin

!

usergroup igp_admin

taskgroup igpadmin

!

usergroup route_admin

taskgroup routeadmin

!

username raoul

password 7 030F5E05

group igp_admin

!

username duke

group route_admin

!

ipv4 virtual address 172.21.116.22 255.255.255.192

ipv4 access-list blockacl

100 deny ip 134.1.1.0 0.0.0.255 any

200 deny ip 134.1.2.0 0.0.0.255 any

300 deny ip 134.1.3.0 0.0.0.255 any

400 deny ip 134.1.4.0 0.0.0.255 any

500 deny ip 134.1.5.0 0.0.0.255 any

550 deny ip 134.1.6.0 0.0.0.255 any

600 deny ip 135.1.5.0 0.0.0.255 any

700 deny ip 135.1.4.0 0.0.0.255 any

800 deny ip 135.1.3.0 0.0.0.255 any

900 deny ip 135.1.2.0 0.0.0.255 any

1000 deny ip 135.1.1.0 0.0.0.255 any

1100 deny ip 136.1.1.0 0.0.0.255 any

1200 deny ip 136.1.2.0 0.0.0.255 any

1300 deny ip 136.1.3.0 0.0.0.255 any

1400 deny ip 136.1.4.0 0.0.0.255 any

1500 permit ip any any

!

ipv4 access-list blockacl2

100 deny ip 134.1.1.0 0.0.0.255 any

200 deny ip 134.1.2.0 0.0.0.255 any

300 deny ip 134.1.3.0 0.0.0.255 any

400 deny ip 134.1.4.0 0.0.0.255 any

500 deny ip 134.1.5.0 0.0.0.255 any

550 deny ip 134.1.6.0 0.0.0.255 any

600 deny ip 135.1.5.0 0.0.0.255 any

700 deny ip 135.1.4.0 0.0.0.255 any

800 deny ip 135.1.3.0 0.0.0.255 any

900 deny ip 135.1.2.0 0.0.0.255 any

1000 deny ip 135.1.1.0 0.0.0.255 any

1100 deny ip 136.1.1.0 0.0.0.255 any

1200 deny ip 136.1.2.0 0.0.0.255 any

1300 deny ip 136.1.3.0 0.0.0.255 any

1400 deny ip 136.1.4.0 0.0.0.255 any

1500 permit ip any any

!

[Repeated show running-config output deleted.] 

end

IS-IS

This section contains the show run router isis output on P3 with IS-IS configured. A user in the task group named igpadmin has permission to activate the protocols Routing Information Base (RIB), IS-IS, and OSPF. 

RP/0/0/CPU0:P3# show run router isis


router isis lab

 is-type level-1

 net 49.0001.0000.0000.0003.00

 nsf ietf

 interface Loopback0

  passive

  address-family ipv4 unicast

  !

 !

 interface POS0/3/0/1

  hello-password text encrypted 05080F1C2243

  address-family ipv4 unicast

  !

 !

 interface POS0/3/0/2

  hello-password text encrypted 01100F175804

  address-family ipv4 unicast

  !

 !

 interface POS0/4/0/0

  hello-password text encrypted 030752180500

  address-family ipv4 unicast

OSPF

This section contains the show run router ospf output on P3 with OSPF configured. For the OSPF instance 6000, the following items are configured:

•Nonstop Forwarding (NSF).

•Its inclusion in area 0.

•All three interfaces for router P3 (as seen in Figure 1).

•Authentication by Message Digest Algorithm 5 (MD5). Encrypted password is 01100f175804.

•Loopback interface configured in the same area as passive. 

RP/0/0/CPU0:P3# show run router ospf


router ospf 60000

 router-id Loopback0

 nsf ietf

 area 0

  authentication message-digest

  message-digest-key 1 md5 encrypted 01100F175804

  interface Loopback0

   passive enable

  !

  interface POS0/3/0/1

  !

  interface POS0/3/0/2

  !

  interface POS0/4/0/0

iBGP

This section contains the show run router ibgp output for the items on P3 that have been configured for BGP instance 65000. The configuration for BGP instance 65000 includes the following items:

•The address family is IPv4 unicast.

•A neighbor group with the name "internal" is configured.

•The encrypted version of the password for a peering session between these neighbors is displayed as 030752180500.

•The remote AS identifier is 6500 (equals the local AS).

•The update source in this neighbor group is each router's loopback address.

•The ASCII descriptions have the format "pod-n," where n can be 1, 2, 4, 5, or 6. 

RP/0/0/CPU0:P3# show run router ibgp


router bgp 65000

 bgp router-id Loopback0

 address-family ipv4 unicast

 !

 neighbor-group internal

  remote-as 65000

  password encrypted 030752180500

  update-source Loopback0

  address-family ipv4 unicast

  !

 !

 neighbor 100.10.20.1

  use neighbor-group internal

  description pod-1

 !

 neighbor 100.10.20.2

  use neighbor-group internal

  description pod-2

 !

 neighbor 100.10.20.4

  use neighbor-group internal

  description pod-4

 !

 neighbor 100.10.20.5

  use neighbor-group internal

  description pod-5

 !

 neighbor 100.10.20.6

  use neighbor-group internal

  description pod-6

!

Multicast

This section shows the running configuration with multicast configured on P3. It shows only the portion of the running configuration after multicast and PIM have been committed. 

RP/0/0/CPU0:P3# show running-config


!... (most of display omitted.)


!

router pim address-family ipv4

auto-rp mapping-agent Loopback0 scope 3 interval 60

auto-rp candidate-rp Loopback0 scope 3 group-list 224/4

interval 60

!

multicast-routing address-family ipv4

interface all enable

!

end

MPLS

This section contains the output on P3 of the show run router mpls command with MPLS configured. This configuration display includes previous OSPF configurations for passwords, area, authentication (MD5), and router ID (which is specified to be the loopback address). The configuration also reflects additional configurations for MPLS:

•The MPLS router ID is the loopback address

•The number of seconds that the router keeps the record of a neighbor without receiving a hello packet from that neighbor (30 seconds in this example)

•The number of seconds from one transmission of a hello packet to the next transmission of a hello packet 

RP/0/0/CPU0:P3# show run router mpls


router ospf 60000

 nsf ietf

 log adjacency changes detail

 area 0

  authentication message-digest

  interface Loopback0

   passive enable

  !

  interface POS0/3/0/1

   message-digest-key 1 md5 encrypted 104D000A0618

  !

  interface POS0/3/0/2

   message-digest-key 1 md5 encrypted 060506324F41

  !

  interface POS0/4/0/0

   message-digest-key 1 md5 encrypted 045802150C2E

  !

 !

 mpls traffic-eng router-id Loopback0

 mpls traffic-eng area 0

!

mpls traffic-eng

 interface POS0/3/0/1

 !

 interface POS0/3/0/2

 !

 interface POS0/4/0/0

 !

!

mpls ldp

 router-id Loopback0

 discovery hello holdtime 30

 discovery hello interval 15

 graceful-restart

 interface POS0/3/0/1

 !

 interface POS0/3/0/2

 !

 interface POS0/4/0/0

 !

!

rsvp

 interface POS0/3/0/1

  bandwidth

 !

 interface POS0/3/0/2

  bandwidth

 !

 interface POS0/4/0/0

  bandwidth

 !

!

Summary of the Fully Configured Network

The following output shows the complete configuration for the network as configured for the example in this document. In this configuration, the routing domain consists of only a backbone area (0) and uses OSPF for the protocol. 

RP/0/0/CPU0:P3# show running-config


hostname P3

logging console

telnet ipv4 server max-servers 6

domain ipv4 host p1 172.21.116.12

domain ipv4 host p2 172.21.116.17

domain ipv4 host p3 172.21.116.22

domain ipv4 host p4 172.21.116.27

domain ipv4 host p5 172.21.116.32

domain ipv4 host p6 172.21.116.37

taskgroup igpadmin

 task write rib

 task write isis

 task write ospf

!

taskgroup routeadmin

 task write bgp

 inherit taskgroup igpadmin

!

usergroup igp_admin

 taskgroup igpadmin

!

usergroup route_admin

 taskgroup routeadmin

!

username raoul

 secret 5 $1$8Gwd$WFGLQa09SGl9A/WlrBiJM0

 group route_admin

!

username duke

 secret 5 $1$EAp8$hWPK3CpBYSL50apOLQmlF0

 group operator

!

username classious

 secret 5 $1$BzAl$yKAqOdOC02vn5xgXmy5Eu/

 group igp_admin

!

ipv4 virtual address 172.21.116.22 255.255.255.192

ipv4 access-list blockacl

 10 deny ip 134.1.1.0 0.0.0.255 any

 20 deny ip 134.1.2.0 0.0.0.255 any

 30 deny ip 134.1.3.0 0.0.0.255 any

 40 deny ip 134.1.4.0 0.0.0.255 any

 50 deny ip 134.1.5.0 0.0.0.255 any

 55 deny ip 134.1.6.0 0.0.0.255 any

 60 deny ip 135.1.1.0 0.0.0.255 any

 70 deny ip 135.10.2.0 0.0.0.255 any

 80 deny ip 135.1.3.0 0.0.0.255 any

 90 deny ip 135.1.4.0 0.0.0.255 any

 110 deny ip 136.1.1.0 0.0.0.255 any

 120 deny ip 136.1.2.0 0.0.0.255 any

 130 deny ip 136.1.3.0 0.0.0.255 any

 140 deny ip 136.1.4.0 0.0.0.255 any

 150 permit ip any any

!

ipv4 access-list blockacl2

 10 deny ip 134.1.1.0 0.0.0.255 any

 20 deny ip 134.1.2.0 0.0.0.255 any

 30 deny ip 134.1.3.0 0.0.0.255 any

 40 deny ip 134.1.4.0 0.0.0.255 any

 50 deny ip 134.1.5.0 0.0.0.255 any

 60 deny ip 135.1.1.0 0.0.0.255 any

 80 deny ip 135.1.3.0 0.0.0.255 any

 90 deny ip 135.1.4.0 0.0.0.255 any

 110 deny ip 136.1.1.0 0.0.0.255 any

 120 deny ip 136.1.2.0 0.0.0.255 any

 130 deny ip 136.1.3.0 0.0.0.255 any

 140 deny ip 136.1.4.0 0.0.0.255 any

 150 permit ip any any

!

interface Loopback0

 ipv4 address 100.10.20.3 255.255.255.255

!

interface tunnel-te1

 ipv4 unnumbered Loopback0

 priority 0 0

 bandwidth 1000

 autoroute announce

 destination 100.10.20.1

 path-option 1 dynamic

!

interface tunnel-te2

 ipv4 unnumbered Loopback0

 priority 0 0

 bandwidth 1000

 autoroute announce

 destination 100.10.20.2

 path-option 1 dynamic

!

interface tunnel-te4

 ipv4 unnumbered Loopback0

 priority 0 0

 bandwidth 1000

 autoroute announce

 destination 100.10.20.4

 path-option 1 dynamic

!

interface tunnel-te5

 ipv4 unnumbered Loopback0

 priority 0 0

 bandwidth 1000

 autoroute announce

 destination 100.10.20.5

 path-option 1 dynamic

!

interface tunnel-te6

 ipv4 unnumbered Loopback0

 priority 0 0

 bandwidth 1000

 autoroute announce

 destination 100.10.20.6

 path-option 1 dynamic

!         

interface MgmtEth0/0/CPU0/0

 ipv4 address 172.21.116.20 255.255.255.192

!

interface MgmtEth0/0/CPU0/1

 shutdown

!

interface MgmtEth0/0/CPU0/2

 shutdown

!

interface MgmtEth0/1/CPU0/0

 ipv4 address 172.21.116.21 255.255.255.192

!

interface MgmtEth0/1/CPU0/1

 shutdown

!

interface MgmtEth0/1/CPU0/2

 shutdown

!

interface POS0/3/0/0

 ipv4 address 142.50.4.3 255.255.255.0

 ipv4 access-group blockacl ingress

!

interface POS0/3/0/1

 ipv4 address 142.50.24.3 255.255.255.0

!

interface POS0/3/0/2

 ipv4 address 142.50.12.3 255.255.255.0

!

interface POS0/3/0/3

 shutdown

!

interface POS0/4/0/0

 ipv4 address 142.50.16.3 255.255.255.0

!

controller SONET0/3/0/0

!

controller SONET0/3/0/1

!

controller SONET0/3/0/2

!

controller SONET0/3/0/3

!         

controller SONET0/4/0/0

!

route ipv4 0.0.0.0/0 172.21.116.1


!

router bgp 65000

 address-family ipv4 unicast

  network 0.0.0.0/0

 !

 neighbor-group internal

  remote-as 65000

  password encrypted 13061E010803

  update-source Loopback0

  address-family ipv4 unicast

  !

 !

 neighbor 100.10.20.1

  use neighbor-group internal

  description P1

 !

 neighbor 100.10.20.2

  use neighbor-group internal

  description P2

 !

 neighbor 100.10.20.4

  use neighbor-group internal

  description P4

 !

 neighbor 100.10.20.5

  use neighbor-group internal

  description P5

 !

 neighbor 100.10.20.6

  use neighbor-group internal

  description P6

 !

!

rsvp

 interface POS0/3/0/1

  bandwidth

 !

 interface POS0/3/0/2

  bandwidth

 !        

 interface POS0/4/0/0

  bandwidth

 !

!

mpls traffic-eng

 interface POS0/3/0/1

 !

 interface POS0/3/0/2

 !

 interface POS0/4/0/0

 !

!

mpls ldp

 router-id Loopback0

 discovery hello holdtime 30

 discovery hello interval 15

 graceful-restart

 interface POS0/3/0/1

 !

 interface POS0/3/0/2

 !

 interface POS0/4/0/0

 !        

!

router pim address-family ipv4

 auto-rp mapping-agent Loopback0 scope 16 interval 60

 auto-rp candidate-rp Loopback0 scope 16 group-list 224/4 interval 60

!

multicast-routing address-family ipv4

 interface tunnel-te1

  disable

 !

 interface tunnel-te2

  disable

 !

 interface tunnel-te4

  disable

 !

 interface tunnel-te5

  disable

 !

 interface tunnel-te6

  disable

 !

 interface all enable

! 

end

Verification Commands

This section contains tables of commands that you can use to view the configurations for the protocols.

You can use the commands in Table 8 to view the BGP configuration.

Table 8 BGP Commands

Command
Function

show bgp

Display entries in the BGP routing table.

show bgp neighbors

Displays information about BGP connections to neighbors.

show bgp neighbor-group

Displays information about the BGP configuration for neighbor groups.


You can use the commands in Table 9 to verify the IS-IS configuration.

Table 9 IS-IS Commands 

Command
Function

show isis interface

Displays information about the IS-IS interface.

show isis neighbors

Displays information about IS-IS neighbors.

show isis protocol

Displays summary information about the IS-IS instance.

show isis route

Displays IP reachability information.

show isis topology

Displays a list of connected routers in all areas.


You can use the commands in Table 10 to verify the OSPF configuration.

Table 10 OSPF Commands

Command
Function

show ospf

Displays general information about the OSPF routing processes.

show ospf border-routers

Displays the internal OSPF routing table entries to an area border router (ABR) and autonomous system boundary router (ASBR).

show ospf neighbor

Displays OSPF neighbor information for an interface.

show ospf route

Displays the OSPF topology table.


You can use the commands in Table 11 to verify the OSPFv3 configuration.

Table 11 OSPFv3 Commands

Command
Function

show ospfv3

Displays general information about OSPFv3 processes.

show ospfv3 border-routers

Displays the internal OSPFv3 routing table entries for an ABR and ASBR.

show ospfv3 database

Displays lists of information related to the OSPFv3 database for a specific router.

show ospfv3 neighbor

Displays OSPFv3 neighbor information for an interface.

show ospfv3 route

Displays the OSPFv3 route table.


Troubleshooting Commands

Table 12 contains some troubleshooting commands that you can use to locate problems in the network configuration.

Table 12 Troubleshooting Commands

Protocol
Command
Function

BGP

show bgp convergence

Displays whether a specific address family has reached convergence.

 

show bgp paths

Displays all BGP paths in the database.

 

show bgp truncated-communities

Displays routes in a BGP routing table in which the inbound policy or aggregation has exceeded the maximum number of communities that can be stored with a route.

IS-IS

show isis adjacency-log

Displays the IS-IS adjacency log.

 

show isis lsp-log

Displays the IS-IS link-state packet (LSP) log.

 

show isis spf-log

Displays how often and why a router ran a full shortest path first (SPF) calculation

OSPF

show ospf retransmission-list

Displays the first ten link-state entries in the retransmission list that the local router will send to the specified neighbor over the specified interface.


Additional References

The following sections provide references related to configuring Cisco IOX-XR software on networks.

Related Documents

Related Topic
Document Title

Getting started with Cisco CRS-1 routers and
Cisco IOSW XR Series Routers

Cisco IOS XR Getting Started Guide

Tasks for configuring interfaces on Cisco CRS-1 routers or Cisco IOS XR Series Routers

Cisco IOS XR Interface and Hardware Component Configuration Guide

Commands for configuring interfaces on Cisco CRS-1 routers or Cisco IOS XR Series Routers

Cisco IOS XR Interface and Hardware Component Command Reference

Configuring Craft Work Interface (CWI) on Cisco CRS-1 routers or Cisco IOS XR Series Routers

Cisco CRS-1 Series Carrier Routing System Craft Web Interface (CWI) Configuration

Tasks for configuring AAA and other elements of security

Cisco IOS XR System Security Configuration Guide

Commands for configuring AAA and other elements of security

Cisco IOS XR System Security Command Reference

Tasks for configuring MPLS

Cisco IOS XR Multiprotocol Label Switching Configuration Guide

Commands for configuring MPLS

Cisco IOS XR Multiprotocol Label Switching Command Reference

Tasks for configuring multicast

Cisco IOS XR Multicast Configuration Guide

Commands for configuring multicast

Cisco IOS XR Multicast Command Reference

Commands for configuring OSPF, OSPFv3, BGP, and IS-IS protocols

Cisco IOS XR Routing Command Reference

Tasks for configuring OSFP, OSPFv3, BGP, and IS-IS protocols

Cisco IOS XR Routing Configuration Guide


Technical Assistance

Description
Link

Technical Assistance Center (TAC) home page, containing 30,000 pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools. Registered Cisco.com users can log in from this page to access even more content.

http://www.cisco.com/public/support/tac/home.shtml


Any Internet Protocol (IP) addresses used in this document are not intended to be actual addresses. Any examples, command display output, and figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses in illustrative content is unintentional and coincidental.

Cisco IOS XR Network Examples
Copyright © 2006 Cisco Systems, Inc. All rights reserved