3Com Switch 8800 Configuration Guide Chapter 21 BGP Configuration21-15Table 21-23 Import IGP routing informationOperation CommandConfigure BGP to import routes ofIGP protocolimport-route protocol [ process-id ] [ medmed ] [ route-policy route-policy-name ]Configure BGP not to importroutes of IGP protocol undo import-route protocolThe protocol argument specifies the imported source route protocols. The specifiedand imported source route protocols can be direct, static, rip, isis, ospf, ospf-ase, andospf-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 thedefault route of the imported source route protocols to BGP by default.II. Configuring not to syncronize with IGPIf the local BGP is not set synchronous with the IGP and the next hop of the learnedBGP route is reachable, the local BGP will add this BGP route into its routing tableimmediately after it learns the route, rather than waiting till the IGP also learns theroute.Perform the following configuration in BGP view.Table 21-24 Configure not to synchronize with IGPOperation CommandCancel the synchronization of BGP and IGP undo synchronizationBy default, BGP does not synchronize with IGP. The Switch 8800 does not supportsynchronization of BGP and IGP.21.2.7 Configuring BGP Route SummarizationThere are two modes of BGP route summarization:z summary: The summary of the BGP subnet routes. After the configuration of thesummary, 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 ofthe aggregation is higher than that of the summarization.Perform the following configuration in BGP view.
