392 CHAPTER 30: BGP CONFIGURATION
Configuring a BGP Route
Reflector
Follow these steps to configure a BGP route reflector:
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■ In general, it is not required to make clients of a route reflector fully meshed.
The route reflector forwards routing information between clients. If clients are
fully meshed, you can disable route reflection between clients to reduce
routing costs.
■ In general, a cluster has only one route reflector, and the router ID is used to
identify the cluster. You can configure multiple route reflectors to improve
network stability. In this case, you need to specify the same cluster ID for these
route reflectors to avoid routing loops.
Configuring a BGP
Confederation
Follow these steps to configure a BGP confederation:
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■ A confederation contains 32 sub-ASs at most. The as-number of a sub-AS
takes effect in the confederation only.
■ If routers not compliant with RFC 3065 exist in the confederation, you can use
the confederation nonstandard command to make the local router
compatible with these routers.
Configuring BGP GR
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A device can act as both a GR Restarter and GR Helper at the same time.
Follow these steps to configure BGP GR:
To do… Use the command… Remarks
Enter system view system-view -
Enter BGP view bgp as-number -
Configure the router as a
route reflector and specify a
peer/peer group as its client
peer { group-name |
ip-address } reflect-client
Required
Not configured by default
Enable route reflection
between clients
reflect between-clients Optional
Enabled by default
Configure the cluster ID of the
route reflector
reflector cluster-id cluster-id Optional
By default, a route reflector
uses its router ID as the cluster
ID.
To do… Use the command… Remarks
Enter system view system-view -
Enter BGP view bgp as-number -
Configure a BGP
confederation
Configure a
confederation ID
confederation id
as-number
Required
Not configured by
default Specify sub-ASs
contained in the
confederation
confederation peer-as
as-number-list
Enable compatibility with routers not
compliant with RFC 3065 in the
confederation
confederation
nonstandard
Optional
Not enabled by default
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