Configure Bgp Neighbor Group And Neighbors - Cisco NCS 5500 Series Configuration Manual

Implementing BGP
Use the route-policy (BGP) command in the neighbor address-family configuration mode to apply the pass-all
policy to a neighbor. The following example shows how to allow all IPv4 unicast routes to be received from
neighbor 192.168.40.42 and advertise all IPv4 unicast routes back to it:
RP/0/RP0/CPU0:router(config)# router bgp 1
RP/0/RP0/CPU0:router(config-bgp)# neighbor 192.168.40.24
RP/0/RP0/CPU0:router(config-bgp-nbr)# remote-as 21
RP/0/RP0/CPU0:router(config-bgp-nbr)# address-family ipv4 unicast
RP/0/RP0/CPU0:router(config-bgp-nbr-af)# route-policy pass-all in
RP/0/RP0/CPU0:router(config-bgp-nbr-af)# route-policy pass-all out
RP/0/RP0/CPU0:router(config-bgp-nbr-af)# commit
Use the show bgp summary command to display eBGP neighbors that do not have both an inbound and
outbound policy for every active address family. In the following example, such eBGP neighbors are indicated
in the output with an exclamation (!) mark:
RP/0/RP0/CPU0:router# show bgp all all summary
Address Family: IPv4 Unicast
============================
BGP router identifier 10.0.0.1, local AS number 1
BGP generic scan interval 60 secs
BGP main routing table version 41
BGP scan interval 60 secs
BGP is operating in STANDALONE mode.
Process
Speaker
Neighbor
10.0.101.1
10.0.101.2

Configure BGP Neighbor Group and Neighbors

Perform this task to configure BGP neighbor groups and apply the neighbor group configuration to a neighbor.
A neighbor group is a template that holds address family-independent and address family-dependent
configurations associated with the neighbor.
After a neighbor group is configured, each neighbor can inherit the configuration through the use command.
If a neighbor is configured to use a neighbor group, the neighbor (by default) inherits the entire configuration
of the neighbor group, which includes the address family-independent and address family-dependent
configurations. The inherited configuration can be overridden if you directly configure commands for the
neighbor or configure session groups or address family groups through the use command.
You can configure an address family-independent configuration under the neighbor group. An address
family-dependent configuration requires you to configure the address family under the neighbor group to
enter address family submode. From neighbor group configuration mode, you can configure address
family-independent parameters for the neighbor group. Use the address-family command when in the neighbor
group configuration mode. After specifying the neighbor group name using the neighbor group command,
you can assign options to the neighbor group.
All commands that can be configured under a specified neighbor group can be configured under a neighbor.
Note
RecvTblVer bRIB/RIB
41 41
Spk AS MsgRcvd MsgSent
0 1 919 925
0 2 0
BGP Configuration Guide for Cisco NCS 5500 Series Routers, IOS XR Release 6.2.x
Configure BGP Neighbor Group and Neighbors
SendTblVer
41
TblVer InQ OutQ Up/Down
41 0 0 15:15:08
0 0 0 0 00:00:00 Idle
St/PfxRcd
10
35