Dell S6100 Configuration Manual page 768

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
9.10(0.0)
9.8(0.0P5)
9.8(0.0P2)
9.7(0.0)
9.3(0.0)
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
purposes. In such cases, if the reply that is obtained from each hop on the network path contains the IP address of
the adjacent, neighboring interface from which the packet is received, it is difficult to employ the ping and
traceroute utilites. You can enable the ICMP unreachable messages to contain the loopback address of the source
device instead of the previous hop's IP address to be able to easily and quickly identify the device and devices
along the path because the DNS server maps the loopback IP address to the hostname and does not translate the
IP address of every interface of the switch to the hostname.
Example
Dell(conf)# ip icmp source-interface tengigabitethernet 1/1/1/1
Dell(conf)#
768 IPv4 Routing
• For a 25-Gigabit Ethernet interface, enter the keyword twentyFiveGigE then the
stack/slot/port/subport information.
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the stack/
slot/port[/subport] information.
• For a 50-Gigabit Ethernet interface, enter the keyword fiftyGigE then the stack/
slot/port/subport information.
• For a 100-Gigabit Ethernet interface, enter the keyword hundredGigE then the
stack/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.
Description
Introduced on the S6100–ON.
Introduced on the S4048-ON.
Introduced on the S3048-ON.
Introduced on the S6000-ON.
Introduced on the S4810, S4820T, S6000, and Z9000 platforms.