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Configuring Neighbor Discovery
Copyright © 2010, Juniper Networks, Inc.
NOTE: IPv6 Neighbor Discovery is fully supported when configured on
broadcast interfaces. IPv6 neighbor discovery supports only router
advertisement characteristics when configured on PPP interfaces.
To configure Neighbor Discovery:
Access an IPv6 interface.
1.
host1(config)#interface fastEthernet 3/0
host1(config-if)#
Configure the current IPv6 interface to send neighbor solicitations and to respond
2.
with neighbor advertisements.
host1(config)#ipv6 nd
NOTE: This command is redundant when configuring Neighbor Discovery
over Ethernet, because router advertisements are automatically sent on
Ethernet interfaces. However, unless explicitly enabled, IPv6 router
advertisements are not sent on other types of interfaces.
(Optional) Configure the interface to retry sending neighbor solicitations using a
3.
specified interval.
host1(config-if)#ipv6 nd ns-interval 500
(Optional) Configure the interface to assume that a neighbor is reachable for a
4.
specified time after a reachable confirmation event.
host1(config-if)#ipv6 nd reachable-time 30000
(Optional) Configure the interface to suppress router advertisements, as well as replies
5.
to router solicitations.
host1(config-if)#ipv6 nd suppress-ra
(Optional) Configure the interface to suppresses the source link-layer option in IPv6
6.
router advertisement transmissions. This action forces neighbors to solicit the router
link layer explicitly, and may prove necessary when enabling inbound load sharing
across multiple link-layer addresses.
host1(config-if)#ipv6 nd suppress-ra-source-link-layer
(Optional) Configure the interface to send router advertisements at a specified interval.
7.
host1(config-if)#ipv6 nd ra-interval 500
(Optional) Configure the router advertisement lifetime in seconds.
8.
host1(config-if)#ipv6 nd ra-lifetime 900
(Optional) Configure the router advertisement to list a specified prefix, for a valid
9.
lifetime and preferred lifetime. The following example also advertises the prefix as
Chapter 3: Configuring Neighbor Discovery
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