Configuring Layer 3 Interface Counters - Cisco Catalyst 4500 series Administration Manual

Configuring VLANs as Layer 3 Interfaces
The following example shows how to configure IPv6 MTU on an interface:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# interface vlan 1
Switch(config-if)# ipv6 mtu 1280
Switch(config)# end
This example shows how to verify the configuration
Switch# show ipv6 interface vlan 1
Vlan1 is up, line protocol is up
IPv6 is enabled, link-local address is FE80::214:6AFF:FEBC:DEEA
Global unicast address(es):
Joined group address(es):
MTU is 1280 bytes
...................(continued)
When IPv6 is enabled on an interface using any CLI command, you may see the following message:
Note
% Hardware MTU table exhausted
In this situation, the IPv6 MTU value programmed in hardware differs from the IPv6 interface MTU
value. This situation occurs if no room exists in the hardware MTU table to store additional values. You
must free up some space in the table by unconfiguring some unused MTU values and subsequently
disable and reenable IPv6 on the interface or reapply the MTU configuration.

Configuring Layer 3 Interface Counters

Catalyst 4900M, Catalyst 4948E, Supervisor Engine 6-E, Supervisor Engine 6L-E, Supervisor Engine
Note
7-E, Supervisor Engine 7L-E, and Supervisor Engine 8-E, do not support Layer 2 interface counters.
To configure Layer 3 interface counters (assign counters to a Layer 3 interface), perform this task:
Command
Step 1
Switch# configure terminal
Step 2
Switch(config)# interface interface-id
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
34-10
1001::1, subnet is 1001::/64
FF02::1
FF02::1:FF00:1
FF02::1:FFBC:DEEA
Chapter 34
Purpose
Enters global configuration mode.
Enters interface configuration mode.
Configuring Layer 3 Interfaces
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