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3Com Switch 8800 Configuration Guide Chapter 21 BGP Configuration
21-15
Table 21-23 Import IGP routing information
Operation Command
Configure BGP to import routes of
IGP protocol
import-route protocol [ process-id ] [ med
med ] [ route-policy route-policy-name ]
Configure BGP not to import
routes of IGP protocol
undo import-route protocol
The protocol argument specifies the imported source route protocols. The specified
and imported source route protocols can be direct, static, rip, isis, ospf, ospf-ase, and
ospf-nssa.
By default, BGP does not import the route information of other protocols.
After you configure the import-route command in a BGP view, you cannot import the
default route of the imported source route protocols to BGP by default.
II. Configuring not to syncronize with IGP
If the local BGP is not set synchronous with the IGP and the next hop of the learned
BGP route is reachable, the local BGP will add this BGP route into its routing table
immediately after it learns the route, rather than waiting till the IGP also learns the
route.
Perform the following configuration in BGP view.
Table 21-24 Configure not to synchronize with IGP
Operation Command
Cancel the synchronization of BGP and IGP
undo synchronization
By default, BGP does not synchronize with IGP. The Switch 8800 does not support
synchronization of BGP and IGP.
21.2.7 Configuring BGP Route Summarization
There are two modes of BGP route summarization:
z summary: The summary of the BGP subnet routes. After the configuration of the
summary, the BGP will not be able to receive subnets imported by the IGP;
z aggregate: The aggregation of the BGP local routes. In general, the preference of
the aggregation is higher than that of the summarization.
Perform the following configuration in BGP view.