Chapter 25
| IP Interface Commands
IPv6 Interface
– 570 –
Example
The following sets the reachable time for a remote node to 1000 milliseconds:
Console(config)#interface vlan 1
Console(config)#pv6 nd reachable-time 1000
Console(config)#
clear ipv6 neighbors This command deletes all dynamic entries in the IPv6 neighbor discovery cache.
Command Mode
Privileged Exec
Example
The following deletes all dynamic entries in the IPv6 neighbor cache:
Console#clear ipv6 neighbors
Console#
show ipv6 neighbors This command displays information in the IPv6 neighbor discovery cache.
Syntax
show ipv6 neighbors [vlan vlan-id | ipv6-address]
vlan-id - VLAN ID (Range: 1-4093)
ipv6-address - The IPv6 address of a neighbor device. You can specify either
a link-local or global unicast address 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.
Default Setting
All IPv6 neighbor discovery cache entries are displayed.
Command Mode
Privileged Exec
Example
The following shows all known IPv6 neighbors for this switch:
Console#show ipv6 neighbors
IPv6 Address Age Link-layer Addr State VLAN
======================================= ========== ================= ===== ====
2001:DB8:2222:7272::73 17 b4-0e-dc-34-96-08 REACH 1
FE80::B60E:DCFF:FE34:9608 7 b4-0e-dc-34-96-08 REACH 1
Console#
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