Relationships between network devices

[menashe aka]

Hi,

I am new to Network discovery, we are trying to discover network devices with SNMP.
I did the setting as written in the documentation in ServiceNow ( add the Mid server to ACL and use SNMP v2 and 3 cred).

I was able to discover the network device, but it missing the related item for the device.

For Snmp v2 I am getting the following ( missing ARP and the Device Neighbors ), do you know why Discovery is unable to discover this information? Is it related to missing permission and other tabs (see the V3 screenshot)?

For the SNMP v3, I got the ARP and Device Neighbors but is not create related item that connects to the network device 

Do you know why I am unable to see the information?

Regards

Menashe 

[AJ-TechTrek]

HI, @menashe aka 

While you are doing Network discovery with V2, That credentials having limited permission to discover the data , Also V3 Cred have permission to discover the requirement , Also while you open the dependancy map you can select the Relationship levels to showcase the relationship, Please check once.

Please appreciate the efforts of community contributors by marking appropriate response as correct answer and helpful, this may help other community users to follow correct solution in future.

Thanks

Ajay

[menashe aka]

Hi Ajay,

What permission do I need to request from the network team? For the V2, I am using the community string.

 I don't see any upstream or downstream. in the Related Items

Regards
Menashe

[Nilanjan1]

I am also facing the same issue....what I asked from the network team is a Read/Write access on the SNMP community string...You can check this article may give you a quick view on Layer 2 switches.

https://www.servicenow.com/docs/bundle/vancouver-it-operations-management/page/product/discovery/con...

https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0683837 

[Sohail Khilji]

Hi @menashe aka  @Nilanjan1 ,

As mentioned, this is because the creds that you are using do not have sufficient permission to get all the related info on the network device that you are discovering. You may need to validate on the permission that are granted on the creds for snmp.

In this case if you look in your ECC queue you may be getting a limited OIDs from the SNMP device the reason being the creds has less permission. I request you to reach out to the network team to check for creds with different encryption etc..

for more debugging trying doing SNMP walk that must help .....

For detailed info check this : 

Credentials & Permissions troubleshooting on Discovery, Service Mapping, Orchestration - Support and...

SNMP Discovery explained - Support and Troubleshooting

I hope it helps...