Quick Reference Guide

Template Last Updated - 7/01/2005 IPv6 Addressing 243
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Default Configuration
1500 bytes.
Command Mode
Privileged EXEC mode.
User Guidelines
This command is intended for debugging and testing purposes and should be used only by technical
support personnel.
Example
The following example sets the Maximum Transmission Unit (MTU) size of IPv6 packets sent on an
interface to 1700.
show ipv6 neighbors
The show ipv6 neighbors Privileged EXEC mode command displays IPv6 neighbor discovery cache
information.
Syntax
• show ipv6 neighbors { static | dynamic }[ ipv6-address ipv6-address ] [ mac-address mac-address ]
•
static — Display static neighbor discovery cash entries.
•
dynamic — Display dynamic neighbor discovery cash entries.
•
ipv6-address — Display the neighbor discovery cache information entry of a specific IPv6 address.
•
mac-address — Display the neighbor discovery cache information entry of a specific MAC address.
Command Mode
Privileged EXEC mode.
User Guidelines
• The associated interface of a MAC address can be aged out from the FDB table, so the Interface field can
be empty.
• When an ARP entry is associated with an IP interface that is defined on a port or port-channel, the VLAN
field is empty.
• The possible neighbor cash states are:
INCMP (Incomplete) — Address resolution is being performed on the entry. Specifically, a Neighbor
Solicitation has been sent to the solicited-node multicast address of the target, but the corresponding
Neighbor Advertisement has not yet been received.
Console> ipv6 set mtu ethernet 1/e16 1700