The software applies these parameters to each neighbor you add to the peer group. You can override the description parameter for
individual neighbors. If you set the description parameter for an individual neighbor, the description overrides the description congured
for the peer group.
Syntax: neighbor peer-group-name peer-group
The peer-group-name parameter species the name of the group and can be up to 80 characters long. The name can contain special
characters and internal blanks. If you use internal blanks, you must use quotation marks around the name. For example, the command
neighbor "My Three Peers" peer-group is valid, but the command neighbor My Three Peers peer-group is not valid.
Syntax: [no] neighbor ip-addr | peer-group-name [ advertisement-interval num ] [ default-originate [ route-map map-name ]]
[ description string ] [ distribute-list { in | out } num,num... | ACL-num in | out ] [ ebgp-multihop [ num ]] [ lter-list in | out num,num,... |
acl-num | out | weight ] [ maxas-limit in [ num | disable ] [ maximum-prex num [ threshold ] [ teardown ]] [ next-hop-self ] [ password
string ] [ prex-list string in | out ] remote-as as-number ] [ remove-private-as ] [ route-map-in | out map-name ] [ route-reector-
client ] [ send-community ] [ soft-reconguration inbound ] [ shutdown ] [ timers keep-alive num hold-time num ] [ update-source
loopback num ethernet unit/slot/port | loopback num | ve num ] [ weight num ] [ local-as as-num ]
The ip-addr and peer-group-name parameters indicate whether you are conguring a peer group or an individual neighbor. You can
specify a peer group name or IP address with the neighbor command. If you specify a peer group name, you are conguring a peer
group. If you specify a neighbor IP address, you are conguring that individual neighbor. Use the ip-addr parameter if you are conguring
an individual neighbor instead of a peer group.
The remaining parameters are the same ones supported for individual neighbors.
Applying a peer group to a neighbor
After you
congure a peer group, you can add neighbors to the group. When you add a neighbor to a peer group, you are applying all the
neighbor attributes specied in the peer group to the neighbor.
To add neighbors to a peer group, enter commands such as the following.
device(config-bgp-router)# neighbor 192.168.1.12 peer-group PeerGroup1
device(config-bgp-router)# neighbor 192.168.2.45 peer-group PeerGroup1
device(config-bgp-router)# neighbor 192.168.3.69 peer-group PeerGroup1
The commands in this example add three neighbors to the peer group "PeerGroup1". As members of the peer group, the neighbors
automatically receive the neighbor parameter values congured for the peer group. You also can override the parameters on an individual
neighbor basis. For neighbor parameters not specied for the peer group, the neighbors use the default values.
Syntax: [no] neighbor ip-addr peer-group peer-group-name
The ip-addr parameter species the IP address of the neighbor.
The peer-group-name parameter species the peer group name.
NOTE
You must add the peer group before you can add neighbors to it.
Administratively shutting down a session with a BGP4 neighbor
You can prevent the device from starting a BGP4 session with a neighbor by administratively shutting down the neighbor. This option is
very useful for situations in which you want to congure parameters for a neighbor, but are not ready to use the neighbor. You can shut
the neighbor down as soon as you have added it to the device, congure the neighbor parameters, then allow the device to reestablish a
session with the neighbor by removing the shutdown option from the neighbor.
When you apply the option to shut down a neighbor, the option takes place immediately and remains in eect until you remove it. If you
save the conguration to the startup conguration le, the shutdown option remains in eect even after a software reload.
Basic conguration tasks required for BGP4
FastIron Ethernet Switch Layer 3 Routing
376 53-1003627-04
To Next Page
Loading...
Need help?
General
