Netgear XCM8810 Chassis User Manual - Page 700
Extended Community Processing, Associating the Extended Community Attribute to the BGP Route
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NETGEAR 8800 User Manual The following two types of extended communities are available: • Route Target (RT) • Site Of Origin (SOO) Although these two community types are generally used in L3 VPN network setup, you can also use them in a non-L3 VPN network to control the distribution of BGP routes. BGP does not send either the extended or standard community attributes to their neighbors by default; you must use the configuration command configure bgp neighbor send-community. Extended Community Processing When BGP receives the extended community attribute in a route from its neighbor, it validates the community syntax. If the community is syntactically valid, the inbound neighbor route-policy is applied to the route. The inbound route-policy may contain extended-community statements in match block (in other words, an or/and set) of the policy. If the route is not rejected by the inbound route-policy, it is added to the LocRIB of the BGP along with the extended community. The detail option of the show bgp routes command displays the routes with the extended community attribute if they are present in that route's path attribute. Associating the Extended Community Attribute to the BGP Route The extended community attribute can be added to or removed from a BGP route using an XCM8800 policy in the same way this action is performed for a regular community attribute. The extended-community keyword has been added in the Policy Manager, and can be used in the match as well as in the set block of a policy file. Syntax in Match block extended-community " ..." Where, the syntax of is [rt|soo]:[: | : | L:
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