Layer 3 Routing Commands 1274administrator can use a special keyword “autodetect” to refer to the link localIPv6 address of the neighbor. For example: “neighbor autodetect interface0/21 remote-as 10000”There are several restrictions to this feature:1 The “interface” can only refer to non-multiple access VLAN routinginterfaces. It does not work on tunnels.2 Only one “autodetect” neighbor can be configured per interface.3 If autodetect neighbor is configured on an interface, a link-local IPv6neighbor cannot be configured on the same interface.4 If more than one link local IPv6 address is detected on the specifiedinterface, this is considered to be an error and the address auto-detectionfails.5 The feature is supported only on platforms that also support the RFC5549.6 The feature is applicable only for directly connected neighbors.7 Multiple access VLANs are not supported.Command HistoryIntroduced in version 6.3.0.1 firmware.Exampleconsole(config)# router bgp 65000console(config-router)# neighbor 172.20.1.2 remote-as 65001console(config-router)# neighbor 172.20.1.2 ebgp-multihop 3console(config-router)# neighbor 2001::2 remote-as 65003console(config-router)# neighbor 2001::2 ebgp-multihop 4neighbor filter-list (BGP Router Configuration)This command filters advertisements to or from a specific neighbor accordingto the advertisement’s AS Path.Syntaxneighbor { ip-address | ipv6-address [ interface interface-id ]} filter-list as-path-list-number {in | out}
