Interface operational state with NSO

[RichardD2]

Hi,

We have a need to determine if a particular interface is down (not admin-down, but operationally) with NSO.

It seems trivial to detect admin-state like this, but oddly, oper-status isn't available.

The goal would to use this state in a service template and make logic decisions based on it.

thanks

R

show devices device mydevice live-status interfaces-state interface TenGigE0/0/0/0 admin-status admin-status up 
show devices device mydevice live-status interfaces-state interface TenGigE0/0/0/0 oper-status % No entries found.

[Nabsch]

Hello ,

Which NED are you using ?

can you provide NSO , Ned version ?

Can you execute this command and post the output that you get  .

show devices device mydevice live-status interfaces-state interface TenGigE0/0/0/0

[RichardD2]

Thanks for the reply,

Running NSO 5.6.5 with cisco-iosxr-cli-7.38 NED

Result of command above:

live-status interfaces-state interface TenGigE0/0/0/0
 admin-status up
 phys-address d4:6a:35:f4:44:00
 speed        10000000000
 statistics in-octets 35334763881
 statistics in-unicast-pkts 7046572
 statistics in-broadcast-pkts 2
 statistics in-multicast-pkts 4058647
 statistics in-discards 0
 statistics in-errors 1
 statistics in-unknown-protos 0
 statistics out-octets 35249134129
 statistics out-unicast-pkts 6023956
 statistics out-broadcast-pkts 3
 statistics out-multicast-pkts 4050900
 statistics out-discards 0
 statistics out-errors 0
 ipv4 forwarding true
 ipv4 mtu   9180
IP             NETMASK          ORIGIN
----------------------------------------
1.2.3.4  255.255.255.252  -

 ipv6 forwarding true
 ipv6 mtu   9180

[u.avsec · Accepted solution]

If nothing else works, and if the NED is CLI perhaps do exec

admin@ncs(config)# devices device rtr live-status cisco-ios-xr-stats:exec any "command you want"

The output would have to be parsed though as it will be a string I think.

This two threads do it in python:

https://community.cisco.com/t5/nso-developer-hub-discussions/how-do-i-call-the-devices-device-foo-config-exec-action-from/td-p/3750061

https://community.cisco.com/t5/nso-developer-hub-discussions/execute-show-command-from-nso-action/td-p/3711082

[RichardD2 · Accepted solution]

Slight modification to the above, gives us:

admin@nso-lab(config)# devices device mydevice live-status exec any "show interface TenGigE 0/0/0/0" | include line
TenGigE0/0/0/0 is up, line protocol is up

We'll check out the python posts, much appreciated.

[hazad · Accepted solution]

It looks like there might be a mismatch between the device output and what the NED expects. In /cisco-iosxr-cli-7.39/src/gili/if:interfaces-state_interface.gili you see that the NED expects "Line protocol is" with an uppercase L, while the output of the device is "line protocol is" with a lowercase l. You can try to correct it and recompile the NED.

[RichardD2]

Thank you, we will give it a go and see what happens.

[RichardD2]

@hazad - You nailed it, that was exactly the issue. Should I open a TAC case and provide this info, or another approach?

thanks

R

[hazad · Accepted solution]

Awesome! Yes, please go ahead and open a TAC case