Chapter 25
| IP Interface Commands
IPv6 Interface
– 558 –
show ipv6 interface This command displays the usability and configured settings for IPv6 interfaces.
Syntax
show ipv6 interface [brief [vlan vlan-id [ipv6-prefix/prefix-length]]]
brief - Displays a brief summary of IPv6 operational status and the
addresses configured for each interface.
vlan-id - VLAN ID (Range: 1-4093)
ipv6-prefix - The IPv6 network portion of the address assigned to the
interface. The prefix must be formatted according to RFC 2373 “IPv6
Addressing Architecture,” using 8 colon-separated 16-bit hexadecimal
values. One double colon may be used in the address to indicate the
appropriate number of zeros required to fill the undefined fields.
prefix-length - A decimal value indicating how many of the contiguous bits
(from the left) of the address comprise the prefix (i.e., the network portion
of the address).
Command Mode
Normal Exec, Privileged Exec
Example
This example displays all the IPv6 addresses configured for the switch.
Console#show ipv6 interface
VLAN 1 is up
IPv6 is enabled.
Link-local address:
FE80::2E0:CFF:FE00:FD/64
Global unicast address(es):
2001:DB8:2222:7273::72/96, subnet is 2001:DB8:2222:7273::/96
Joined group address(es):
FF02::1:FF00:72
FF02::1:FF00:FD
FF02::1
IPv6 link MTU is 1280 bytes
ND DAD is enabled, number of DAD attempts: 3.
ND retransmit interval is 1000 milliseconds
ND reachable time is 30000 milliseconds
Console#
Table 122: show ipv6 interface - display description
Field Description
VLAN A VLAN is marked “up” if the switch can send and receive packets on this interface,
“down” if a line signal is not present, or “administratively down” if the interface has
been disabled by the administrator.
IPv6 IPv6 is marked “enable” if the switch can send and receive IP traffic on this
interface, “disable” if the switch cannot send and receive IP traffic on this interface,
or “stalled” if a duplicate link-local address is detected on the interface.
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