CLI Guide

ipv6 icmp source-interface
Enable the ICMP error and unreachable messages to be sent with the source interface IP address, such as
the loopback address, instead of the hops of the preceding devices along the network path to be used for
easy debugging and diagnosis of network disconnections and reachability problems with IPv6 packets.
Syntax
ipv6 icmp source-interface interface
Parameters
interface Enter one of the following keywords and slot/port or
number information:
• For a Management Ethernet interface, enter the keyword
managementethernet.
NOTE: When you configure the capability to enable
the loopback IP address to be sent for easy
debugging and diagnosis (IP addresses of the
devices for which the ICMP source interface is
configured), the source IP address of the outgoing
ICMP error message is modified, although the
packets are not sent out using the configured
interface. Because the management interface is
configurable only without any parameters such as
the IP address, it is treated to the management
interface of the primary unit or the existing unit.
• For a Loopback interface, enter the keyword loopback.
The range is from 0 to 16383.
• For a Port Channel interface, enter the keywords port-
channel then a number. The range is from 1 to 128.
• For a 10-Gigabit Ethernet interface, enter the keyword
TenGigabitEthernet.
• For a VLAN interface, enter the keyword vlan. The range
is from 1 to 4094.
Defaults Not configured.
Command Modes CONFIGURATION
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.3(0.0) Introduced on the MXL platform.
Usage Information You can enable the mechanism to configure the source or the originating interface
from which the packet (the device that generates the ICMP error messages) is
received by the switch to send the loopback address instead of its source IP
address to be used in the ICMP unreachable messages and in the traceroute
command output. The loopback address must be unique in a particular domain.
In network environments that contain a large number of devices, ranging up to
thousands of systems, and with each device configured for equal-cost multipath
710
IPv4 Routing