498 CHAPTER 27: BGP CONFIGURATION COMMANDSDescriptionUse the aggregate command to establish an aggregated record in the BGProuting table.Use the undo aggregate command to disable the function.By default, there is no route aggregation.The keywords are explained as follows:Example# Create an aggregated record in BGP routing table.[3Com-bgp] aggregate 168.328.0.0 255.255.0.0Balance Syntaxbalance balance-numberundo balanceViewBGP viewParameterbalance-number: Specifies the number of BGP equivalent routes.DescriptionUse the balance command to set the number of BGP equivalent routes currentlysupported by the system.Use the undo balance command to restore the default number of BGP equivalentroutes.By default, the system supports one BGP equivalent route.Table 69 The use of the keywordsKeyword Useas-set Used to produce an aggregated route, whose AS path informationincludes detailed routes. Use this keyword carefully when many AS pathsneed to be aggregated, for the frequent change of routes may lead toroute vibration.detail-suppressedThis keyword does not suppress any aggregated route, but it restrains theadvertisement of all the specific routes. If only some specific routes are tobe restrained, use the peer filter-policy command carefully.suppress-policy Create an aggregated route with this keyword. At the same time, theadvertisement of the specified route is restrained. If you want to restrainsome specific routes selectively and leaves other routes still beingadvertised, use the if-match sub-statement of the route-policycommand.origin-policy Selects only the specific routes that are in accordance with route-policy tocreate an aggregated route.attribute-policy Sets aggregated route attributes. The same work can be done by using thepeer route-policy command, etc.
