D-Link DGS-6600-48T Product Manual - Page 48

DGS-6604 m aggregate-address aggregate-address Use this command to configure BGP aggregate entries. Use the no form of the command to disable this function. aggregate-address NETWORK-NUMBER/SUBNET-LENGTH [summary-only] [as-set] no aggregate-address NETWORK-NUMBER/SUBNET-LENGTH [summary-only] [as-set] Syntax Description NETWORK-NUMBER/ Specifies the number of network and the length of network that BGP will SUBNET-LENGTH aggregate. summary-only as-set The format of NETWORK-NUMBER/SUBNET-LENGTH can be 10.9.18.2/8. (Optional) Filters all more-specific routes from updates. (Optional) Generates autonomous system set path information. Default Command Mode Usage Guideline Example Disabled Router configuration Aggregates are used to minimize the size of routing tables. Aggregation combines the characteristics of several different routes and advertises a single route. The aggregate-address command creates an aggregate entry in the BGP routing table if any more-specific BGP routes are available in the specified range. Using the summary-only parameter advertises the prefix only, suppressing the more-specific routes to all neighbors. The as-set parameter creates an aggregate entry advertising the path for this route, consisting of all elements contained in all paths being summarized. Use the as-set parameter to reduce the size of the path information by listing the AS number only once, even if it was included in multiple paths that were aggregated. The as-set parameter is useful when aggregation of information results in an incomplete path information. This example shows how to propagate network 172.0.0.0 and suppresses the more specific route 172.10.0.0: Switch(config)# router bgp 65534 Switch(config-router)# aggregate-address 172.0.0.0/8 summary-only CLI Reference Guide 38