Users Guide

Table Of Contents
Layer 3 Routing Commands 1302
The IPv6 Link Local Address Auto Detect feature eliminates the need for the
network administrator to configure the link local IPv6 address of every
neighbor. Instead of specifying the link local IPv6 address, the network
administrator can use a special keyword “autodetect” to refer to the link local
IPv6 address of the neighbor. For example: “neighbor autodetect interface
0/21 remote-as 10000”
There are several restrictions to this feature:
1
The “interface” can only refer to non-multiple access VLAN routing
interfaces. 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 IPv6
neighbor cannot be configured on the same interface.
4
If more than one link local IPv6 address is detected on the specified
interface, this is considered to be an error and the address auto-detection
fails.
5
The feature is supported only on platforms that also support the RFC
5549.
6
The feature is applicable only for directly connected neighbors.
7
Multiple access VLANs are not supported.
Command History
Introduced in version 6.3.0.1 firmware.
Example
console(config)# router bgp 65000
console(config-router)# neighbor 172.20.1.2 remote-as 65001
console(config-router)# neighbor 172.20.1.2 ebgp-multihop 3
console(config-router)# neighbor 2001::2 remote-as 65003
console(config-router)# neighbor 2001::2 ebgp-multihop 4
neighbor filter-list (BGP Router Configuration)
This command filters advertisements to or from a specific neighbor according
to the advertisement’s AS Path.