Cisco XR 12000 Command Reference Manual page 162

show tech-support cef
Command Modes
EXEC
Command History
Release
Release 3.2
Usage Guidelines
This command generates tech-support information that is useful for Cisco Technical Support representatives
when troubleshooting a router. By default, the output of this command is saved on the router's hard disk in a
file with .tgz extension. You can share this file with Cisco Technical Support. To share, use the copy command
to copy the .tgz file to a server or local machine. For example, copy harddisk:/showtech/name.tgz
tftp://server_path.
For Cisco Technical Support contact information, see the 'Obtaining Documentation and Submitting a Service
Request' section in the Preface.
This command can generate a very large amount of output. You may want to redirect the output to a file
Tip
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.
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.
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
• show cef ipv4 non-recursive
Cisco IOS XR Advanced System Command Reference for the Cisco XR 12000 Router, Release 4.3.x
154
Modification
This command was introduced.
Tech-Support Commands
OL-28456-02