Cisco IOS XR Network Examples, Release 3.0 [Cisco IOS XR Software]

Cisco IOS XR Network Examples

Topology Diagram

show running-config Command Output for Each Node in the Topology

12404_r4

Configuration for SJ_CRS-1

Configuration for SYD_CRS-1

Configuration for 12406-r4

Configuration for 12404_r4

Configuration for 12406-r3

Verification Commands

Troubleshooting Information

Troubleshooting Commands

Additional References

Cisco IOS XR Network Examples

The examples in this document illustrate configurations for a local-to-remote network that are running Cisco IOS XR software on the Carrier Routing System (CRS-1) routing systems and Cisco IOS software on the Cisco 12000 series routers. The document contains the following sections:

•Topology Diagram

•show running-config Command Output for Each Node in the Topology

•Verification Commands

•Troubleshooting Information

The assortment of examples consist of the output of the show running configuration command for the following combination technologies:

•internal Border Gateway Protocol (iBGP) and Open Shortest Path First (OSPF)

•BGP

•BGP and Intermediate System-to-Intermediate System (IS-IS)

•BGP and OSPF

Topology Diagram

All examples reflect the network topology in Figure 1. The network contains two CRS-1 routing systems, labeled SYD_CRS-1 and SJ_CRS-1, and three Cisco 12000 series Internet routers, labeled 12406_r4, 12404_r4, and 12406_r3.

Figure 1 Network Topology

show running-config Command Output for Each Node in the Topology

This section contains the configuration output from the Cisco IOS XR software and the Cisco IOS software for each node in the topology.

12404_r4

This section shows the configuration running on the Cisco 12000 series router labeled 12404_r4.

sh run

Building configuration...

Current configuration: 2319 bytes

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname 12404_r4

boot-start-marker

boot system disk0:c12kprp-p-mz.120-28.S

boot system flash disk0:

boot-end-marker

redundancy

 mode rpr

enable password cisco

hw-module slot 2 ip multicast hw-accelerate source-table size 16 offset 0

hw-module slot 3 ip multicast hw-accelerate source-table size 16 offset 0

ip subnet-zero

ip cef table consistency-check auto-repair

ip ftp username cisco

ip ftp password cisco

no ip domain-lookup

ip multicast-routing distributed

ipv6 unicast-routing

controller SYSCLOCK 2

interface Loopback0

 ip address 192.168.10.104 255.255.255.255

 no ip directed-broadcast

 ipv6 address 3FFE:B00:C18:1::4/128

 ipv6 enable

 ipv6 ospf 1 area 0

interface POS2/0

 ip address 192.168.4.2 255.255.255.252

 no ip directed-broadcast

 ip pim sparse-dense-mode

 load-interval 30

 ipv6 address 2000:10:1:4::2/96

 ipv6 enable

 ipv6 ospf 1 area 0

 crc 16

 clock source internal

 pos scramble-atm

interface POS2/1

 no ip address

 no ip directed-broadcast

 ip pim sparse-mode

 load-interval 30

 shutdown

 crc 16

 clock source internal

 pos scramble-atm

interface POS2/2

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS2/3

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface GigabitEthernet3/0

 ip address 192.168.80.1 255.255.255.0

 no ip directed-broadcast

 ip pim sparse-mode

 load-interval 30

 negotiation auto

interface GigabitEthernet3/1

 no ip address

 no ip directed-broadcast

 shutdown

 no negotiation auto

interface GigabitEthernet3/2

 no ip address

 no ip directed-broadcast

 shutdown

 no negotiation auto

interface Ethernet0

 ip address 10.66.72.59 255.255.255.128

 no ip directed-broadcast

 ip route-cache cef

interface Ethernet1

 no ip address

 no ip directed-broadcast

 no ip route-cache

 shutdown

router ospf 1

 log-adjacency-changes

 network 192.168.4.0 0.0.0.3 area 0

 network 192.168.10.104 0.0.0.0 area 0

 network 192.168.80.0 0.0.0.255 area 0

ip classless

ip route 10.66.64.10 255.255.255.255 10.66.72.1

ip pim ssm default

ipv6 router ospf 1

 log-adjacency-changes

line con 0

line aux 0

line vty 0 4

 password cisco

 login

exception warmstart 60 5

no cns aaa enable

end

12404_r4#

12406_03

sh run

Building configuration...

Current configuration : 2496 bytes

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname 12406_r3

boot-start-marker

boot-end-marker

redundancy

 mode rpr

ip subnet-zero

ip cef table consistency-check auto-repair

ip ftp username cisco

ip ftp password cisco

ip multicast-routing distributed

ipv6 unicast-routing

interface Loopback0

 ip address 192.168.10.102 255.255.255.255

 no ip directed-broadcast

 ip router isis GSR

 ipv6 address 3FFE:B00:C18:1::5/128

 ipv6 enable

 ipv6 router isis GSR

interface POS1/0

 ip address 192.168.2.2 255.255.255.252

 no ip directed-broadcast

 ip pim sparse-dense-mode

 ip router isis GSR

 load-interval 30

 ipv6 address 2000:10:1:3::2/96

 ipv6 enable

 ipv6 router isis GSR

 crc 16

 clock source internal

 pos scramble-atm

interface POS1/1

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

 clock source internal

 pos scramble-atm

interface POS1/2

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/3

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/4

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/5

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/6

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/7

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/8

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/9

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/10

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/11

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/12

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/13

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/14

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS1/15

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface GigabitEthernet3/0

 no ip address

 no ip directed-broadcast

 shutdown

 no negotiation auto

interface Ethernet0

 ip address 10.66.72.54 255.255.255.128

 no ip directed-broadcast

 ip route-cache cef

router isis GSR

 net 49.0001.1720.1600.2002.00

 metric-style wide

 address-family ipv6

 multi-topology

 exit-address-family

ip classless

ip route 10.66.64.10 255.255.255.255 10.66.72.1

line con 0

line aux 0

line vty 0 4

 login

end

12406_r3#

12406_r4

sh run

Building configuration...

Current configuration : 3411 bytes

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname 12406_r4

boot-start-marker

boot system disk0:

boot-end-marker

redundancy

 mode rpr

enable password cisco

ip subnet-zero

ip cef table hardware resource-failure action punt

no ip domain-lookup

ip multicast-routing distributed

ip igmp ssm-map enable

no ip igmp ssm-map query dns

ip igmp ssm-map static 1 192.168.80.2

ip ssh time-out 120

ip ssh authentication-retries 3

ipv6 unicast-routing

controller SYSCLOCK 4

interface Loopback0

 ip address 192.168.10.103 255.255.255.255

 no ip directed-broadcast

 ip router isis GSR

 ipv6 address 3FFE:B00:C18:1::1/128

 ipv6 enable

 ipv6 router isis GSR

interface FastEthernet0/0

 ip address 10.66.72.64 255.255.255.128

 no ip directed-broadcast

interface FastEthernet0/1

 ip address 192.168.90.1 255.255.255.0

 no ip directed-broadcast

 ip pim sparse-mode

 ip router isis GSR

 load-interval 30

interface FastEthernet0/2

 no ip address

 no ip directed-broadcast

 shutdown

interface FastEthernet0/3

 no ip address

 no ip directed-broadcast

 shutdown

interface FastEthernet0/4

 no ip address

 no ip directed-broadcast

 shutdown

interface FastEthernet0/5

 no ip address

 no ip directed-broadcast

 shutdown

interface FastEthernet0/6

 no ip address

 no ip directed-broadcast

 shutdown

interface FastEthernet0/7

 no ip address

 no ip directed-broadcast

 shutdown

interface POS4/0

 ip address 192.168.3.2 255.255.255.252

 no ip directed-broadcast

 ip pim sparse-dense-mode

 ip router isis GSR

 load-interval 30

 ipv6 address 2000:10:1:1::2/96

 ipv6 enable

 ipv6 router isis GSR

 crc 16

 clock source internal

 pos scramble-atm

interface POS4/1

 no ip address

 no ip directed-broadcast

 ip pim sparse-mode

 load-interval 30

 shutdown

 crc 16

interface POS4/2

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/3

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/4

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/5

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/6

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/7

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/8

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/9

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/10

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/11

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/12

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/13

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/14

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/15

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface Ethernet0

 no ip address

 no ip directed-broadcast

router isis GSR

 net 49.0001.1720.1600.2001.00

 metric-style wide

 address-family ipv6

 multi-topology

 exit-address-family

ip classless

ip route 0.0.0.0 0.0.0.0 10.66.72.1

ip route 10.66.167.72 255.255.255.255 10.66.72.1

ip pim ssm default

access-list 1 permit 232.24.137.145

access-list 1 permit 232.1.1.1

line con 0

line aux 0

line vty 0 4

 password cisco

 login

no cns aaa enable

end

12406_r4#

Configuration for SJ_CRS-1

The following is a sample configuration of the iBGP and OSPF protocol for the SJ_CRS-1 node.

RP/0/RP0/CPU0:router# show running config

Building configuration...

!! Last configuration change at 22:58:47 UTC Thu Dec 25 2003 by UNKNOWN

!! Config last updated at 22:50:16 UTC Thu Dec 25 2003

hostname SJ_CRS-1

interface Loopback0

 ipv4 address 192.168.10.100 255.255.255.255

interface MgmtEth0/7/CPU0/0

 shutdown

interface POS0/1/0/0

 description to SYD_CRS-1 POS 0/1/0/0

 ipv4 address 192.168.1.1 255.255.255.252

interface POS0/3/0/0

 description to 12406_r3 POS 0/0

 ipv4 address 192.168.2.1 255.255.255.252

interface POS0/3/0/1

 ipv4 address 192.168.4.1 255.255.255.252

interface POS0/3/0/2

 shutdown

interface POS0/3/0/3

 shutdown

controller SONET0/1/0/0

 path

  scrambling disable

controller SONET0/3/0/0

 path

  scrambling disable

controller SONET0/3/0/1

 path

  scrambling disable

controller SONET0/3/0/2

 shutdown

controller SONET0/3/0/3

 shutdown

interface preconfigure Ethernet0/7/0/0

 ipv4 address 10.66.72.15 255.255.255.0

route ipv4 0.0.0.0/0 10.66.72.1

route ipv4 10.66.64.10/32 10.66.72.1

router isis CRS-1

 net 49.0001.1720.1600.2003.00

 nsf cisco

 address-family ipv4 unicast

  redistribute ospf CRS-1 level-2 metric 0 metric-type internal

 interface Loopback0

  address-family ipv4 unicast

 interface POS0/1/0/0

  address-family ipv4 unicast

 interface POS0/3/0/0

  address-family ipv4 unicast

router ospf CRS-1

 redistribute isis CRS-1

 area 0

  interface POS0/3/0/1

router bgp 65535

 neighbor-group IBGP_PEERS

  remote-as 65535

  update-source Loopback0

  address-family ipv4 unicast

   route-reflector-client

   soft-reconfiguration inbound always

 neighbor 192.168.10.101

  remote-as 65534

  ebgp-multihop 2

  update-source Loopback0

  address-family ipv4 unicast

   next-hop-self

   soft-reconfiguration inbound always

 neighbor 192.168.10.102

  use neighbor-group IBGP_PEERS

 neighbor 192.168.10.104

  use neighbor-group IBGP_PEERS

domain ipv4 host SYD 192.168.10.101

ntp

 server 192.104.222.16

 source Ethernet0/7/0/0

 update-calendar

end

RP/0/RP0/CPU0:router#

Configuration for SYD_CRS-1

The following is a sample configuration of the BGP protocol and for the SYD_CRS-1 node:

RP/0/RP0/CPU0:router# show running config

Building configuration...

!! Last configuration change at 22:51:58 UTC Thu Dec 25 2003 by UNKNOWN

!! Config last updated at 22:50:12 UTC Thu Dec 25 2003

hostname SYD_CRS-1

interface Loopback0

 ipv4 address 192.168.10.101 255.255.255.255

interface MgmtEth0/0/CPU0/0

 shutdown

interface POS0/1/0/0

 description to SJ_CRS-1 to POS 0/1/0/0

 ipv4 address 192.168.1.2 255.255.255.252

interface POS0/2/0/0

 description to 12406_r4 to POS 4/0

 ipv4 address 192.168.3.1 255.255.255.252

interface POS0/2/0/1

 shutdown

interface POS0/2/0/2

 shutdown

interface POS0/2/0/3

 shutdown

controller SONET0/1/0/0

 path

  scrambling disable

controller SONET0/2/0/0

 path

  scrambling disable

controller SONET0/2/0/1

 path

  scrambling disable

controller SONET0/2/0/2

 shutdown

controller SONET0/2/0/3

 shutdown

router isis CRS-1

 net 49.0001.1720.1600.2004.00

 nsf cisco

 interface Loopback0

  address-family ipv4 unicast

 interface POS0/1/0/0

  address-family ipv4 unicast

 interface POS0/2/0/0

  address-family ipv4 unicast

router bgp 65534

 neighbor 192.168.10.100

  remote-as 65535

  ebgp-multihop 2

  update-source Loopback0

  address-family ipv4 unicast

   soft-reconfiguration inbound always

 neighbor 192.168.10.103

  remote-as 65534

  update-source Loopback0

  address-family ipv4 unicast

   soft-reconfiguration inbound always

ntp

 server 192.104.222.16

 source Ethernet0/0/0/0

 update-calendar

end

RP/0/RP0/CPU0:router#

Configuration for 12406-r4

The following is a sample configuration of the BGP protocol and Intermediate-System-to-Intermediate-Sytem (IS-IS) protocol for the 12406-r4 node:

RP/0/RP0/CPU0:router# show running config

Building configuration...

Current configuration : 1825 bytes

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname 12406_r4

redundancy

 mode rpr

ip subnet-zero

mpls ldp logging neighbor-changes

no mpls traffic-eng auto-bw timers frequency 0

controller SYSCLOCK 4

interface Loopback0

 ip address 192.168.10.103 255.255.255.255

 no ip directed-broadcast

 ip router isis GSR

interface Loopback1

 ip address 192.168.11.1 255.255.255.0

 no ip directed-broadcast

interface Loopback2

 ip address 192.168.12.1 255.255.255.0

 no ip directed-broadcast

interface Loopback3

 ip address 192.168.13.1 255.255.255.0

 no ip directed-broadcast

interface POS2/0

 no ip address

 no ip directed-broadcast

 shutdown

 crc 32

interface POS3/0

 no ip address

 no ip directed-broadcast

 shutdown

 crc 32

interface POS4/0

 ip address 192.168.3.2 255.255.255.252

 no ip directed-broadcast

 ip router isis GSR

 crc 16

 clock source internal

interface POS4/1

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/2

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS4/3

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface Ethernet0

 no ip address

 no ip directed-broadcast

 ip route-cache cef

 shutdown

router isis GSR

 net 49.0001.1720.1600.2001.00

router bgp 65534

 no synchronization

 bgp log-neighbor-changes

 network 192.168.11.0

 network 192.168.12.0

 network 192.168.13.0

 neighbor 192.168.10.101 remote-as 65534

 neighbor 192.168.10.101 update-source Loopback0

 neighbor 192.168.10.101 soft-reconfiguration inbound

 no auto-summary

ip classless

line con 0

 exec-timeout 0 0

line aux 0

line vty 0 4

 login

end

Configuration for 12404_r4

The following is a sample configuration of the BGP protocol and OSPF protocol for the 12404-r4 node:

RP/0/RP0/CPU0:router# show running config

Building configuration...

Current configuration : 1963 bytes

! Last configuration change at 22:53:40 UTC Thu Dec 25 2003

! NVRAM config last updated at 22:54:31 UTC Thu Dec 25 2003

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname 12404_r4

redundancy

 mode rpr

ip subnet-zero

mpls ldp logging neighbor-changes

no mpls traffic-eng auto-bw timers frequency 0

controller SYSCLOCK 2

interface Loopback0

 ip address 192.168.10.104 255.255.255.255

 no ip directed-broadcast

interface Loopback1

 ip address 192.168.14.1 255.255.255.0

 no ip directed-broadcast

interface Loopback2

 ip address 192.168.15.1 255.255.255.0

 no ip directed-broadcast

interface Loopback3

 ip address 192.168.16.1 255.255.255.0

 no ip directed-broadcast

interface POS2/0

 ip address 192.168.4.2 255.255.255.252

 no ip directed-broadcast

 crc 16

 clock source internal

interface POS2/1

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

 clock source internal

interface POS2/2

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS2/3

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS3/0

 no ip address

 no ip directed-broadcast

 shutdown

 crc 32

interface Ethernet0

 ip address 10.66.72.26 255.255.255.0

 no ip directed-broadcast

 ip route-cache cef

router ospf 1

 log-adjacency-changes

 network 192.168.4.0 0.0.0.3 area 0

 network 192.168.5.0 0.0.0.3 area 0

 network 192.168.10.104 0.0.0.0 area 0

router bgp 65535

 no synchronization

 bgp log-neighbor-changes

 network 192.168.14.0

 network 192.168.15.0

 network 192.168.16.0

 neighbor 192.168.10.100 remote-as 65535

 neighbor 192.168.10.100 update-source Loopback0

 neighbor 192.168.10.100 soft-reconfiguration inbound

 no auto-summary

ip classless

ip route 0.0.0.0 0.0.0.0 10.66.72.1

line con 0

 exec-timeout 0 0

line aux 0

line vty 0 4

ntp clock-period 17179771

ntp update-calendar

ntp server 64.104.222.16

end

RP/0/RP0/CPU0:router#

Configuration for 12406-r3

The following is a sample configuration of the BGP protocol and IS-IS protocol for the 12406-r3 node:

RP/0/RP0/CPU0:router# show running config

Building configuration...

Current configuration : 2293 bytes

version 12.0

no service pad

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

hostname 12406_r3

boot-start-marker

boot-end-marker

redundancy

 mode rpr

ip subnet-zero

controller SYSCLOCK 0

interface Loopback0

 ip address 192.168.10.102 255.255.255.255

 no ip directed-broadcast

 ip router isis GSR

interface Loopback1

 ip address 192.168.17.1 255.255.255.0

 no ip directed-broadcast

interface Loopback2

 ip address 192.168.18.1 255.255.255.0

 no ip directed-broadcast

interface Loopback3

 ip address 192.168.19.1 255.255.255.0

 no ip directed-broadcast

interface POS0/0

 ip address 192.168.2.2 255.255.255.252

 no ip directed-broadcast

 ip router isis GSR

 ip route-cache flow

 crc 16

 clock source internal

interface POS0/1

 ip address 10.1.1.2 255.255.255.252

 no ip directed-broadcast

 crc 16

interface POS0/2

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS0/3

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS0/4

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS0/5

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS0/6

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS0/7

 no ip address

 no ip directed-broadcast

 shutdown

 crc 16

interface POS2/0

 no ip address

 no ip directed-broadcast

 shutdown

 crc 32

interface Ethernet0

 no ip address

 no ip directed-broadcast

 ip route-cache cef

 shutdown

router isis GSR

 net 49.0001.1720.1600.2002.00

router bgp 65535

 no synchronization

 bgp log-neighbor-changes

 network 192.168.17.0

 network 192.168.18.0

 network 192.168.19.0

 neighbor 192.168.10.100 remote-as 65535

 neighbor 192.168.10.100 update-source Loopback0

 neighbor 192.168.10.100 soft-reconfiguration inbound

 no auto-summary

ip classless

ip route 10.2.0.0 255.255.255.0 10.1.1.1

line con 0

 exec-timeout 0 0

line aux 0

line vty 0 4

 login

end

RP/0/RP0/CPU0:router#

Verification Commands

You can use the commands in Table 1 to verify the BGP configuration:

Table 1 BGP Commands
Command	Description
show bgp neighbors	Displays information about BGP connections to neighbors, use the command.
show bgp	Displays entries in the BGP routing table, use the command.
show bgp neighbor-group	Displays information about the BGP configuration for neighbor groups.
show bgp process	Displays BGP process information.
show bgp route-policy	Displays BGP information about networks that match an outbound route policy.
show bgp session-group	Displays information about the BGP configuration for session groups.
show bgp update-group	Displays BGP information for update groups.
show bgp af-group	Displays information about BGP configuration for address family groups.

You can use the commands in Table 2 to verify the IS-IS configuration:

Table 2 IS-IS Commands
Command	Description
show isis neighbors	Displays information about IS-IS neighbors.
show isis route	Displays IP reachability information.
show isis topology	Displays a list of connected routers in all areas.
show isis interface	Displays information about the IS-IS interface.
show isis hostname	Displays the entries in the IS-IS router name-to-system ID mapping table.
show isis mpls traffic-eng tunnel	Displays Multiprotocol Label Switching traffic engineering (MPLS TE) tunnel information.
show isis protocol	Displays summary information about the IS-IS instance.
show isis checkpoint adjacency	Displays the IS-IS checkpoint adjacency database.

You can use the commands in Table 3 to verify the OSPF configuration:

Table 3 OSPF Commands
Command	Description
show ospf	Displays general information about 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 on a per-interface basis.
show ospf route	Displays the OSPF topology table.
show ospf virtual-links	Displays parameters and the current state of OSPF virtual links.

You can use the commands in Table 4 to verify the OSPFv3 configuration:

Table 4 OSPFv3 Commands
Command	Description
show ospfv3	Displays general information about OSPFv3 routing processes.
show ospfv3 border-routers	Displays the internal OSPFv3 routing table entries to 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 on a per-interface basis.
show ospfv3 route	Displays the OSPFv3 route table.

Troubleshooting Information

The procedures for troubleshooting an IOS XR software configured network are similar to those for troubleshooting Cisco IOS software-configured network. Generally, your troubleshooting efforts should proceed as follows:

1. Isolate and reproduce the failing scenario.

2. Collect relevant information from show and debug commands, configuration files, and protocol analyzers.

3. Identify the first indication of failure in protocol traces or internal debug output.

4. Look for the cause in configuration files.

If the via-zone is suspected as the source of a call failure, isolate the problem to a gateway or gatekeeper by identifying the affected subfunction and focus on show and debug commands related to that subfunction.

Troubleshooting Commands

Table 5 provides commands you can use to locate problems in your network configuration:

Table 5 Troubleshooting Commands
Protocol	Command	Description
BGP	show bgp truncated-communities	Displays routes in the BGP routing table where inbound policy or aggregation has exceeded the maximum number of communities that may be stored with a route.
	show bgp convergence	Displays whether a specific address family has reached convergence.
	show bgp paths	Displays all the BGP paths in the database.
IS-IS	show isis mpls traffic-eng advertisements	Displays the latest flooded record from MPLS TE.
	show isis mpls traffic-eng adjacency-log	Displays a log of MPLS TE adjacency changes for IS-IS.

Hierarchical Navigation

Cisco IOS XR Software

Cisco IOS XR Network Examples, Release 3.0

Downloads

Table Of Contents

Cisco IOS XR Network Examples

Topology Diagram

show running-config Command Output for Each Node in the Topology

12404_r4

Configuration for SJ_CRS-1

Configuration for SYD_CRS-1

Configuration for 12406-r4

Configuration for 12404_r4

Configuration for 12406-r3

Verification Commands

Troubleshooting Information

Troubleshooting Commands