Command Default
IPv4 is the default.
The command output is not compressed.
Command Modes
EXEC
Command History
Modification
Release
This command was introduced.
Release 3.2
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task
IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator
for assistance.
This command can generate a very large amount of output. You may want to redirect the output to a file
using the
file send-to
keyword and argument. Redirecting the output to a file also makes sending the
output to your Cisco Technical Support representative easier.
Tip
Use the
show tech-support cef
command to run
show
commands that display information specific to CEF
debugging. This command is used to locate any issues related to the Forwarding Information Base (FIB)
which is more commonly referred to as Cisco Express Forwarding (CEF). This command generates CEF
debugging information that can be useful for Cisco Technical Support representatives when troubleshooting
a router. See 'Obtaining Documentation and Submitting a Service Request' section on page iii in the Preface
for Cisco Technical Support contact information..
This command is not required during normal use of the router.
Note
The following
show
commands run automatically when you run the
show tech-support cef
command:
•
show version
•
show running
•
show route
{
ipv4
|
ipv6
}
unicast
•
show proc blocked
•
show cef
{
ipv4
|
ipv6
|
mpls
}
exceptions
•
show cef
{
ipv4
|
ipv6
|
mpls
}
drop
•
show ipv4 interface brief
•
show cef
{
ipv4
|
ipv6
}
summary
•
show cef
{
ipv4
|
ipv6
|
mpls
}
interface
Cisco IOS XR Advanced System Command Reference for the Cisco XR 12000 Router, Release 5.1.x
OL-30353-01
171
Tech-Support Commands
show tech-support cef