HP 6125XLG R2306-HP 6125XLG Blade Switch Layer 3 - IP Routing Command Referenc - Page 279
peer allow-as-loop, Related commands, Syntax, Default, Views, Predefined user roles, Parameters
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Related commands • apply extcommunity • if-match extcommunity • ip extcommunity-list peer allow-as-loop Use peer allow-as-loop to allow a local AS number to exist in the AS_PATH attribute of routes from a peer or peer group, and to configure the number of times the local AS number can appear. Use undo peer allow-as-loop to restore the default. Syntax In BGP IPv4 unicast instance view/BGP-VPN IPv4 unicast instance view: peer { group-name | ip-address } allow-as-loop [ number ] undo peer { group-name | ip-address } allow-as-loop In BGP IPv6 unicast instance view: peer { group-name | ipv6-address } allow-as-loop [ number ] undo peer { group-name | ipv6-address } allow-as-loop In BGP VPN IPv6 unicast instance view: peer { group-name | ipv6-address } allow-as-loop [ number ] undo peer { group-name | ipv6-address } allow-as-loop Default The local AS number is not allowed to exist in the AS_PATH attribute of routes from a peer or peer group. Views BGP IPv4 unicast instance view, BGP-VPN IPv4 unicast instance view, BGP IPv6 unicast instance view, BGP-VPN IPv6 unicast instance view Predefined user roles network-admin Parameters group-name: Specifies a peer group by its name, a case-sensitive string of 1 to 47 characters. The peer group must have been created. ip-address: Specifies a peer by its IP address. The peer must have been created. ipv6-address: Specifies a peer by its IPv6 address. The peer must have been created. number: Specifies the number of times for which the local AS number can appear, in the range of 1 to 10. The default number is 1. If the number of times for which the local AS number appears in a route is more than the specified number, BGP considers that a routing loop occurs and discards the route. Usage guidelines By default, BGP does not receive routes that contain the local AS number in the AS_PATH attribute to avoid routing loops. However, in certain network environments (a Hub&Spoke network in MPLS L3VPN, 268