CLI Guide

Version Description
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–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 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
DellEMC(conf)# ipv6 icmp source-interface gigabitethernet 1/1
DellEMC(conf)#
ip max-frag-count
Set the maximum number of fragments allowed in one packet for packet re-assembly.
Syntax
ip max-frag-count count
To place no limit on the number of fragments allowed, use the no ip max-frag-count command.
Parameters
count Enter a number for the number of fragments allowed for re-assembly. The range is
from 2 to 256.
Defaults No limit is set on number of fragments allowed.
Command Modes CONFIGURATION
Command
History
This guide is platform-specific. For command information about other platforms, see the relevant Dell
EMC Networking OS Command Line Reference Guide.
Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
9.10(0.0) Introduced on the S3148.
9.10(0.0) Introduced on the S6100–ON.
9.8(2.0) Introduced on the S3100 series.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
726 IPv4 Routing