H3C Technologies H3C SR8800 - Manual (Page 229)

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Step Command Remarks
3. Enable route redistribution
from a routing protocol into
BGP.
import-route protocol [ { process-id
| all-processes } [ allow-direct |
med med-value | route-policy
route-policy-name ] * ]
Not redistributed by default.
The allow-direct keyword is
available only when the specified
routing protocol is OSPF.
4. Enable default route
redistribution into BGP.
default-route imported
Optional.
Not enabled by default.
Controlling route distribution and reception
Configuration prerequisites
BGP connections have been created.
Configuring BGP route summarization
To reduce the routing table size on medium and large BGP networks, configure route summarization on
BGP routers. BGP supports two summarization modes: automatic and manual. Manual summary routes
have a higher priority than automatic ones.
Configuring automatic route summarization
After automatic route summarization is configured, BGP summarizes redistributed IGP subnets to
advertise only natural networks. Routes injected with the network command cannot be summarized.
To configure automatic route summarization:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view. bgp as-number N/A
3. Configure automatic route
summarization.
summary automatic
Not configured by
default
Configuring manual route summarization
By configuring manual route summarization, you can summarize both redistributed routes and routes
injected using the network command and determine the mask length for a summary route as needed.
To configure BGP manual route summarization:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter BGP view. bgp as-number N/A