Suppressing Router Advertisement Messages; Configuring A Static Ipv6 Neighbor; Verifying The Ipv6 Configuration; Viewing Ipv6 Interface Settings - Cisco 7604 Configuration Manual
Catalyst 6500 series switch and cisco 7600 series router firewall services module configuration guide using the cli
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Configuring a Static IPv6 Neighbor
Suppressing Router Advertisement Messages
By default, Router Advertisement messages are automatically sent in response to router solicitation
messages. You may want to disable these messages on any interface for which you do not want FWSM
to supply the IPv6 prefix (for example, the outside interface).
To suppress IPv6 router advertisement transmissions on an interface, enter the following command:
hostname(config-if)# ipv6 nd suppress-ra
Configuring a Static IPv6 Neighbor
You can manually define a neighbor in the IPv6 neighbor cache. If an entry for the specified IPv6 address
already exists in the neighbor discovery cache—learned through the IPv6 neighbor discovery
process—the entry is automatically converted to a static entry. Static entries in the IPv6 neighbor
discovery cache are not modified by the neighbor discovery process.
To configure a static entry in the IPv6 neighbor discovery cache, enter the following command:
hostname(config-if)# ipv6 neighbor ipv6_address if_name mac_address
The ipv6_address argument is the link-local IPv6 address of the neighbor, the if_name argument is the
interface through which the neighbor is available, and the mac_address argument is the MAC address of
the neighbor interface.
The clear ipv6 neighbors command does not remove static entries from the IPv6 neighbor discovery
Note
cache.
Verifying the IPv6 Configuration
This section describes how to verify your IPv6 configuration. You can use various show commands to
verify your IPv6 settings.
This section includes the following topics:
•
•
Viewing IPv6 Interface Settings
To display the IPv6 interface settings, enter the following command:
hostname# show ipv6 interface [if_name]
Including the interface name, such as "outside", displays the settings for the specified interface.
Excluding the name from the command displays the setting for all interfaces that have IPv6 enabled on
them. The output for the command shows the following:
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•
Catalyst 6500 Series Switch and Cisco 7600 Series Router Firewall Services Module Configuration Guide using ASDM
10-10
Viewing IPv6 Interface Settings, page 10-10
Viewing IPv6 Routes, page 10-11
The name and status of the interface.
The link-local and global unicast addresses.
Chapter 10
Configuring IPv6
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