Foundry NetIron M2404C and M2404F Metro Access Switches
Network Administration Tools (Rev. 03)
Diagnosing Connectivity Problems
© 2008 Foundry Networks, Inc.
Page 134 of 155
Diagnosing Connectivity Problems
In cases where the user is supplied the correct IP address, but there is no network connectivity, the
Packet Internet Groper (PING) and Trace Route tools allow the user to explore the Internet and the
connectivity problems.
Diagnostic Commands
Ping
PING
is a tool that helps the user to verify the Internet connectivity at the IP level. The
ping
command sends an Internet Control Message Protocol (ICMP) echo request to the IP address or
selected hostname.
Trace Route
The
Trace route
tool works by sending by sending ICMP echo packets with varying IP Time-to-
Live (TTL) values to the destination. On the screen, each router that is crossed between the source
computer and the destination IP address will be displayed.
The following table lists the commands for troubleshooting connectivity problems.
Table 33: Connectivity Diagnosis Commands
Command
Description
traceroute
Displays the routing path from the routing switch to the targeted IP
address.
ping
Pings another device from the switch.
For detailed instructions, please refer to chapter “
Troubleshooting and Monitoring
”.