Command Reference Guide

3Com Router 3000 Ethernet Family
Command Reference Guide Chapter 3 HWPing Commands
3Com Corporation
3-21
Example
# Set the ToS field in the header of HWPing packets to one.
[Router-administrator-ftp] tos 1
3.1.30 ttl
Syntax
ttl number
undo ttl
View
HWPing test group view
Parameter
number: Time to live (TTL) value or lifetime of HWPing ICMP test packets. It is in the
range 1 to 255 and defaults to 255.
Description
Use the ttl command to configure TTL of ICMP test packets.
Use the undo ttl command to restore the default TTL of ICMP test packets.
TTL is actually a hop count limit on how far a test packet can travel on a network. In a
ping command, it is defined using the argument “-h”.
 Note:
This command applies to all types of tests except for DHCP test.
The sendpacket passroute command voids the ttl command.
Example
# Set the TTL of HWPing ICMP test packets to 16.
[Router-administrator-icmp] ttl 16
3.1.31 username
Syntax
username name
undo username