H3C Technologies H3C S10500 Series Switches - Manual (Page 240)

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To do… Use the command… Remarks
Configure the maximum number of BGP
routes for load balancing
balance number
Optional
Load balancing is not
enabled by default.
Forbiding session establishment with a peer or peer group
Follow these steps to forbid session establishment with a peer or peer group:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Forbid session establishment with a peer
or peer group peer { group-name | ip-address }
ignore Optional
Not forbidden by default
Configuring a large scale BGP network
In a large-scale BGP network, configuration and maintenance become difficult because of the large
numbers of BGP peers. To facilitate configuration, you can configure peer group, community, route
reflector, or confederation as needed.
Configuration prerequisites
Peering nodes are accessible to each other at the network layer.
Configuring BGP peer groups
A peer group is a group of peers with the same route selection policy.
In a large-scale network, many peers may use the same route selection policy. You can configure a peer
group and add these peers into this group. In this way, peers can share the same policy as the peer
group. When the policy of the group is modified, the modification also applies to peers in it, simplifying
configuration.
A peer group is an iBGP peer group if peers in it belong to the same AS, and is an eBGP peer group if
peers in it belong to different ASs.
If a peer group has peers added, you cannot remove its AS number using the undo form of the command
or change its AS number.
Configure an iBGP peer group
After you create an iBGP peer group and then add a peer into it, the system creates the peer in BGP view
and specifies the local AS number for the peer.
Follow these steps to configure an iBGP peer group:
To do… Use the command… Remarks
Enter system view system-view —