Configuring Application Features Of A Bgp Peer (Group) - H3C S9500 Series Operation Manual

Operation Manual – BGP
H3C S9500 Series Routing Switches

1.2.3 Configuring Application Features of a BGP Peer (Group)

I. Configuring to permit connections with EBGP peer groups on indirectly
connected networks
Generally, EBGP peers must be connected physically. Otherwise the command below
can be used to perform the configuration to make them communicate with each other
normally.
Perform the following configuration in BGP view to permit connections with EBGP peer
groups on indirectly connected networks:
Configure to permit connections with EBGP peer
groups on indirectly connected networks
Configure to permit connections with EBGP peer
groups on directly connected network only
By default, only the connections with EBGP peer groups on directly connected
networks are permitted. ttl refers to time-to-live in the range of 1 to 255 with the default
value as 64.
II. Configuring an IBGP peer group to be a client of a route reflector
Perform the following configuration in BGP view to configure an IGMP peer group to
be/not to be a client of a route reflector:
Configure a peer group to be a client of a route
reflector
Cancel the configuration of making the peer
group as the client of the BGP route reflector
This configuration can be applied to IBGP peer groups only.
By default, all IBGP peers in the autonomous system must be fully connected.
Moreover, neighbors do not notify the learned IBGP routes.
III. Configuring to send default route to a peer group
If you only need to notify a default route between a pair of BGP peers instead of
transmitting the default route within the whole network, you can use the peer
default-route-advertise command.
Perform the following configuration in BGP view.
Follow these steps to send default route to a peer group:
To do...
To do...
1-10
Chapter 1 BGP Configuration
Use the command...
peer group-name ebgp-max-
hop [ ttl ]
undo peer group-name
ebgp-max-hop
Use the command...
peer group-name reflect-client
undo peer group-name reflect-
client