Operation Manual – IPv6 Routing
H3C S3610&S5510 Series Ethernet Switches
Chapter 5 IPv6 BGP Configuration
5-18
To do...
Use the command...
Remarks
Configure the maximum
number of load balanced
routes
balance
number
Required
By default, no load
balancing is enabled.
5.7 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.
In a peer group, all members enjoy a common policy. Using the community attribute
can make a set of IPv6 BGP routers in multiple ASs enjoy the same policy, because
sending of community between IPv6 BGP peers is not limited by AS.
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 BGP4, so it is not
mentioned here. The following describes:
z
Configuring IPv6 BGP peer group
z
Configuring IPv6 BGP community
z
Configuring IPv6 BGP route reflector
5.7.1 Prerequisites
Before configuring IPv6 BGP peer group, you have:
z
Made peer nodes accessible at network layer
z
Enabled BGP and configured router ID.
5.7.2 Configuring IPv6 BGP Peer Group
I. Create an IBGP peer group
Follow these steps to create an IBGP group: