Install guide

Software Version 2.9.1 35
Software Version 2.9.1
C613-10486-00 REV C
IP Debug Timeout
This enhancement makes it possible to specify a timeout value when enabling
IP debugging. After the timeout expires, IP debugging is automatically
disabled. This helps to prevent problems from too much IP debugging clogging
up the display.
To specify the timeout, use the new optional timeout parameter in the
command:
enable ip debug={all|arp|packet|advertise|upnp}
[timeout={none|1..2400}]
The timeout units are seconds.
For example, to enable ARP debugging and display the debugging information
for the next 25 seconds, use the command:
enable ip debug=arp timeout=25
To see the current timeout value, use the show debug active[=ip] command.
The current timeout is shown above the types of IP debugging that are
currently enabled (Figure 7 on page 43).
Command Changes
The following table summarises the modified commands:
Show IP Interface Command Displays Gratuitous ARP
Status
This Software Version includes an additional field in the output in the show ip
interface command. This displays whether the interface accepts or rejects
gratuitous ARPs.
Gratuitous ARP packets are ARP messages that are not required for the
functioning of ARP (RFC 826). However, they are often sent by devices to aid
with early detection of IP conflicts and to keep ARP tables in other routers or
switches up to date. To configure whether an interface accepts or rejects these
messages, use the command:
set ip interface[=interface] gratuitousarp={off|on}
To see which interfaces on the router or switch accept gratuitous ARP request
or reply messages, use the command:
show ip interface[=interface]
Command Changes
The following table summarises the modified command:
Command Change
enable ip debug New timeout parameter
show debug active New IP Debug Timeout field
Command Change
show ip interface New GArp field in output