Need assistance to write script for verifying EIGRP neigbourship in routers

[Vikram S]

I request assistance to write a script that needs to verify that EIGRP neighbourship shown in router before IOS upgrade is the same after IOS upgrade (and reload) as well. Below is a sample output of EIGRP neibourship that i need to verify after IOS upgrade. How can i write a script for that?

ROUTER#sh ip eigrp neighbor

EIGRP-IPv4 Neighbors for AS(500)

H   Address                 Interface              Hold Uptime   SRTT   RTO  Q  Seq

                                                   (sec)         (ms)       Cnt Num

0   10.1.250.250           Gi1/1/1.255              10 1w6d        1   144  0  4409

2   10.1.250.252             Gi1/1/1.255              13 6w5d        1   144  0  13775

1   10.1.250.253             Gi1/1/1.255              10 6w5d        1   144  0  20042

EIGRP-IPv4 Neighbors for AS(600)

H   Address                 Interface              Hold Uptime   SRTT   RTO  Q  Seq

                                                   (sec)         (ms)       Cnt Num

19  10.250.254.70           Tu10                     14 00:27:07  536  3216  0  537976

12  10.250.255.50           Tu10                     14 01:11:41  555  3330  0  328857

7   10.250.255.60           Tu10                     13 11:47:09  246  1476  0  1188183

17  10.250.255.40           Tu10                     14 1d11h     117   702  0  254686

5   10.250.255.50           Tu10                     10 1d14h      51   306  0  19347

Thanks,

Vikram

[Dick Visser]

As this is a list for ansible, I assume you mean 'playbook' when you say 'script'.

Since your question has nothing else that is related to ansible?

Sounds like you just need to compare some output before and after the upgrade so you can tell if they're equal. 

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[Vikram S]

Hi Dick,

Sorry i didn't frame my question properly. What i want to check is the number of entries in the output matches with the entries after IOS upgrade & reload.

I wrote the below script but i don't think it would help this script compares the whole output and not just the no. of entgries. Since the timer in secs would keep chaging, this script will always show wrong result. Any other suggestion you have?

 name: GATHER SHOW VERSION

      ios_command:

        commands: "show cdp nei"

      register: show_cdp

    - debug:

        msg: "{{ show_cdp.stdout_lines[0] | list }}"

Thanks,

Vikram

[Dick Visser]

If it is about the number of entries then you should compare that before and after 

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[Vikram S]

Hi,

I am wondering what module/ filter to use for comparing number of entries?

Thanks,

Vikram

[Dick Visser]

Count 

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[Vikram S]

Hi,

You truly rock!!!! count filter helped. Below script solves my issue.

tasks:

    - name: GATHER SHOW VERSION

      ios_command:

        commands: "show ip eigrp nei"

      register: show_eigrp

    - debug:

        msg: "{{ show_eigrp.stdout_lines[0] | count }}"

I will compare the command within debug msg with the similar output extracted after IOS upgrade & reload.

However i noticed that  this comamnd wrosk only when i give it as '{{ show_eigrp.stdout_lines[0] | count }}'. Ifg i were to give it as {{ show_eigrp.stdout_lines | count }}, it shown count as zero. Any idea why this difference happens?

Thanks,

Vikram