Users Guide

ip 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 IPv4 packets.
Syntax
ip icmp source-interface interface
Parameters
interface Enter one of the following keywords and slot/port[/subport] 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 configured 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 10-Gigabit Ethernet interface, enter the keyword TenGigabitEthernet
then the slot/port/subport information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/
port information.
• For a Loopback interface, enter the keyword loopback then a number from 0 to
16383.
• For a port channel interface, enter the keywords port-channel then a number.
• For a VLAN interface, enter the keyword vlan then a number from 1 to 4094.
Defaults Not configured.
Command Modes CONFIGURATION
Command History
This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
9.10(0.0) Introduced on the S6100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.3(0.0) Introduced on the S4810, S4820T, S6000, and Z9000 platforms.
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 (ECMP) links, you cannot effectively and optimally use the
traceroute and ping applications to examine the network reachablity and identify any broken links for diagnostic
IPv4 Routing 751