H3C Technologies H3C S10500 Series Switches - Manual (Page 254)

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To do… Use the command… Remarks
Enter MBGP address family view ipv4-family multicast —
Enable route redistribution from
another routing protocol
import-route protocol [ { process-id
| all-processes } [ allow-direct |
med med-value | route-policy
route-policy-name ] * ]
Required
No route redistribution is
configured by default.
Currently, the allow-direct
keyword is available only when the
specified routing protocol is OSPF.
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 automatic and manual summarization modes.
• 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.
• 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 —
Configure MBGP route
summarization
Enable automatic route
summarization:
summary automatic
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
Use either command
No route summarization is
configured by default.
If the two commands are both
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: