3Com Switch 8800 Family Configuration Guide

Configuring BGP 365
■ “Configuring BGP Timer”
■ “Configuring the Local Preference”
■ “Configuring MED for AS”
5 BGP application configuration
■ “Comparing the MED Routing Metrics from the Peers in Different ASs”
6 BGP networking configuration
■ “Configuring BGP Route Reflector”
■ “Configuring BGP AS Confederation Attribute”
■ “Configuring BGP Load Balancing”
■ “Setting the Switch for Adjacency State Output”
7 Others
■ “Clearing BGP Connection”
■ “Refreshing BGP Routes”
Enabling BGP To enable BGP, local AS number should be specified. After the enabling of BGP,
local router listens to BGP connection requests sent by adjacent routers. To make
the local router send BGP connection requests to adjacent routers, refer to the
configuration of the peer command. When BGP is disabled, all established BGP
connections will be disconnected.
Perform the following configuration in system view.
By default, BGP is not enabled.
Configuring Basic
Features for BGP Peer
When configuring a MBGP peer (group), you should first configure AS ID for it and
then enter the corresponding address family view to activate the association.
Perform the following configurations in BGP view.
Creating a peer group
A BGP peer must belong to a peer group. Before configuring a BGP peer, a peer
group to which the peer belongs must be created first.
There are two types of BGP peer group, IBGP and EBGP. Using the internal
keyword to create an IBGP peer group. You can use the external keyword to
Tab le 346 Enable/Disable BGP
Operation Command
Enable BGP and enter the BGP view bgp as-number
Disable BGP undo bgp [ as-number ]
Tab le 347 Create a peer group
Operation Command
Create a peer group group group-name [ internal | external ]
Delete the specified peer group undo group group-name