Some handy commands I use to save my time doing Cisco IOS XR labs

Remember: Default behaviors of Cisco IOS XR are there to secure your router even we forget to configure them. Never try to disable them on any production network!

For lab practice, however, security is not my concern at all. I list some of my handy configuration fragments to save me time when I do IOS XR labs. I hope they are also helpful to you!

Flower of strawberry.
Photo taken in Hsinchu County, Taiwan.

[Stop console automatic logout]
line console
 exec-timeout 0 0
line default
 exec-timeout 0 0

[Enable SSH Server]

crypto key generate rsa
(enter)
conf

ssh server v2

commit

[Enable TELNET Server]

telnet ipv4 server max-servers 100

[Enable CDP]

conf

cdp

interface g0/0/0/0

 cdp

commit

[Pass-any route policy. The name is 'pass'.]

route-policy pass

  pass

end-policy

[Prefix set 'PrivateNetRFC1918' and route policy 'ListPrivateNetRFC1918']

prefix-set PrivateNetRFC1918

  10.0.0.0/8 ge 8,

  172.16.0.0/12 ge 12,

  192.168.0.0/16 ge 16

end-set

route-policy ListPrivateNetRFC1918

  if destination in PrivateNetRFC1918 then

    pass

  endif

end-policy

One more thing...

I put them together so you can easily copy all and paste as a configuration template.

--- CUT HERE ---

crypto key generate rsa


conf
ssh server v2

line console
 exec-timeout 0 0
line default
 exec-timeout 0 0

telnet ipv4 server max-servers 100

route-policy pass

  pass

end-policy

prefix-set PrivateNetRFC1918

  10.0.0.0/8 ge 8,

  172.16.0.0/12 ge 12,

  192.168.0.0/16 ge 16

end-set

route-policy ListPrivateNetRFC1918

  if destination in PrivateNetRFC1918 then

    pass

  endif

end-policy

cdp

interface g0/0/0/0

 cdp

commit

--- END ---