3Com Switch 8800 Advanced Software V5 Configuration Guide

480 CHAPTER 36: IPV6 BGP CONFIGURATION
Configuring the
Maximum Number of
Equal Cost Routes
Perform these commands to configure the maximum number of equal cost routes
for load balancing:
Configuring a Large
Scale IPv6 BGP
Network
In a large-scale IPv6 BGP network, configuration and maintenance become no
convenient due to too many peers. In this case, configuring peer groups makes
management easier and improves route distribution efficiency. Peer group includes
IBGP peer group, where peers belong to the same AS, and EBGP peer group,
where peers belong to different ASs. If peers in an EBGP group belong to the same
external AS, the EBGP peer group is a pure EBGP peer group, and if not, a mixed
EBGP peer group.
To guarantee connectivity between IBGP peers, you need to make them fully
meshed, but it becomes unpractical when there are too many IBGP peers. Using
route reflectors or confederation can solve it. In a large-scale AS, both of them can
be used.
Confederation configuration of IPv6 BGP is identical to that of BGP, so it is not
mentioned here. The following describes:
■ Configuring an IPv6 BGP peer group
■ Configuring the IPv6 BGP community
■ Configuring an IPv6 BGP route reflector
Prerequisites Before configuring an IPv6 BGP peer group, you have:
■ Made peer nodes accessible at the network layer
■ Enabled BGP and configured router ID.
Configuring IPv6 BGP
Peer Group
Create an IBGP peer group
To create an IBGP group, use the following commands:
Save all routes from a
peer/peer group, not letting
them go through the inbound
policy
peer { ipv6-group-name |
ipv6-address }
keep-all-routes
Optional
Not saved by default.
Return to user view return Required
Soft-reset BGP connections
manually
refresh bgp ipv6 { all |
ipv6-address | group
ipv6-group-name | external |
internal } { export | import }
To do... Use the command... Remarks
To do... Use the command... Remarks
Enter system view system-view -
Enter BGP view bgp as-number Required
Enter IPv6 address family view ipv6-family -
Configure the maximum
number of equal cost routes
for load balancing
balance number Required
By default, no load balancing
is enabled.