Chapter 27
| IP Interface Commands
IPv6 Interface
– 675 –
show ipv6 mtu
This command displays the maximum transmission unit (MTU) cache for
destinations that have returned an ICMP packet-too-big message along with an
acceptable MTU to this switch.
Command Mode
Normal Exec, Privileged Exec
Example
The following example shows the MTU cache for this device:
Console#show ipv6 mtu
MTU Since Destination Address
1400 00:04:21 5000:1::3
1280 00:04:50 FE80::203:A0FF:FED6:141D
Console#
show ipv6 traffic
This command displays statistics about IPv6 traffic passing through this switch.
Command Mode
Privileged Exec
Example
The following example shows statistics for all IPv6 unicast and multicast traffic, as
well as ICMP, UDP and TCP statistics:
Console#show ipv6 traffic
IPv6 Statistics:
IPv6 received
3 total received
header errors
too big errors
no routes
address errors
unknown protocols
truncated packets
discards
delivers
reassembly request datagrams
reassembly succeeded
reassembly failed
Table 141: show ipv6 mtu - display description
*
* No information is displayed if an IPv6 address has not been assigned to the switch.
Field Description
MTU Adjusted MTU contained in the ICMP packet-too-big message returned from this
destination, and now used for all traffic sent along this path.
Since Time since an ICMP packet-too-big message was received from this destination.
Destination
Address
Address which sent an ICMP packet-too-big message.
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