H3C Technologies H3C S7500E Series Switches - Manual (Page 239)

8-5
To do… Use the command… Remarks
Enable route redistribution from
another routing protocol
import-route protocol
[ { process-id | all-processes }
[ med med-value | route-policy
route-policy-name ] * ]
Required
No route redistribution is
configured by default.
Enable default route redistribution
into the MBGP routing table
default-route imported
Required
Not enabled by default
Configuring MBGP Route Summarization
To reduce the routing table size on medium and large MBGP networks, you need to configure route
summarization on peers. MBGP supports two summarization modes: automatic and manual.
z Automatic summarization: Summarizes subnets redistributed from IGP. With the feature
configured, MBGP advertises only summary natural networks rather than subnets. The default
routes and routes injected with the network command are not summarized.
z Manual summarization: Summarizes MBGP local routes. A manual summary route has a higher
priority than an automatic one.
Follow these steps to configure MBGP route summarization:
To do… Use the command… Remarks
Enter system view system-view —
Enter BGP view bgp as-number —
Enter IPv4 MBGP address family view ipv4-family multicast —
Enable automatic route
summarization
summary automatic
Configure
MBGP route
summarization
Configure manual
route summarization
aggregate ip-address { mask | mask-length }
[ as-set | attribute-policy route-policy-name |
detail-suppressed | origin-policy
route-policy-name | suppress-policy
route-policy-name ] *
Required
No route
summarization
is configured by
default.
Choose either
as needed; if
both are
configured, the
manual route
summarization
takes effect.
Advertising a Default Route to an IPv4 MBGP Peer or Peer Group
Follow these steps to advertise a default route to an MBGP peer or peer group: