H3C S7500 Series Ethernet Switches Operation Manual

Operation Manual – Routing Protocol
H3C S7500 Series Ethernet Switches Chapter 6 BGP Configuration
6-21
Caution:
z It is not required to specify an AS number for creating an IBGP peer group.
z If there already exists a peer in a peer group, you can neither change the AS
number of the peer group nor delete a specified AS number through the undo
command.
6.7.3 Configuring a BGP Community
Follow these steps to configure a BGP community:
To do... Use the command... Remarks
Enter system view
system-view
—
Enter BGP view
bgp as-number
—
Configure the peers to
advertise community
attribute to the peer group
peer group-name
advertise-community
Required
By default, no community
attribute or extended
community attribute is
advertised to any peer
group.
Specify routing policy for
the routes exported to the
peer group
peer group-name
route-policy
route-policy-name export
Required
By default, no routing
policy is specified for the
routes exported to the
peer group.
Caution:
z When configuring BGP community, make sure you use a routing policy to define
the specific community attribute, and then apply the routing policy when a peer
sends routing information.
z For configuration of routing policy, refer to IP Routing Policy Configuration.
6.7.4 Configuring BGP RR
Follow these steps to configure BGP RR: