Can EEM detect the routers prompt?

[steven.crutchley]

Is it possible for EEM scripting to be used to check that the correct prompt is showing when a particular command is entered?

For example if I am in BGP config mode and I type:

Router(config-router)#address-family ipv4 unicast vrf 1234

I would like to make sure that the prompt changes to:

Router(config-router-af)#

This would prevent someone accidentally mistyping the VRF and end up putting code in the global address family that could cause problems. An alternative might be to detect the % VRF 1234 does not exist. warning instead?

[Joe Clarke]

Unfortunately, you cannot match the prompt in this manner.  However, you can use the CLI event detector to match the address-family ... command and then check to see that the VRF actually exists.  If it doesn't you can print a message that might be more visible to the user.  I'm not sure if this would be sufficient for your use case, though.
 

[steven.crutchley]

Hi Joseph,

We have managed to come up with this to server our purpose:

event manager session cli username eemauto

event manager applet BGP_VRF_CHECK
 event cli pattern "address-family ipv4 vrf .*" sync yes
  action 10  cli command "enable"
  action 20  cli command "configure terminal"
  action 30  cli command "router bgp 1234"
  action 40  cli command "$_cli_msg"
  action 50  string length "$_cli_result"
  action 60  if $_string_result lt 50 goto END
  action 70  regexp "% VRF (.*) does not exist." "$_cli_result" not_configured vrf
  action 80  syslog msg "CATCH_AF_VRF_NOT_EXIST: VRF $vrf is not configured.  Networks please investigate."
  action END set _exit_status "1"

Not as smooth as I would like as it is dependent on the resulting length of the % VRF (.*) does not exist. message. It will generate a syslog message that we can then detect and send a message out.