Discovery layer 3 network devices

[James Desmond]

How can I activate SNMP for layer 3 network  device (Cisco 3850 series) in discovery.

Regards,

James

[robertgeen]

It's hard to tell what the question is. If you get SNMP access you can just discover it. Now to map Layer 3 relationships go to discovery properties and make sure the enable layer 3 topology setting is set and you should start to see some relationships between the network device and things connected to it.

[Vinay Gatade · Accepted solution]

Hi James,

According to my experience, first you have to configure SNMP in network device. I think for Cisco 3850 series supports SNMPv2c and SNMPv3.

To configure SNMPv2 and SNMPv2c please refer below link:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/snmp/configuration/xe-3se/3850/snmp-xe-3se-3850-book/nm-snmp-snmpv2c.html

To configure SNMPv3 please refer below link:

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/snmp/configuration/xe-3se/3850/snmp-xe-3se-3850-book/nm-snmp-snmpv3.html.

Discovery supports SNMP versions 1, 2c, and 3. Discovery uses version 1 and 2c by default. You must enable support for version 3.

To discover network devices in Discovery refer below link:

https://docs.servicenow.com/bundle/london-it-operations-management/page/product/discovery/concept/c_NetworkDiscovery.html#c_NetworkDiscovery

To enable support for version 3:

https://docs.servicenow.com/bundle/london-it-operations-management/page/product/discovery/concept/c_SNMPSupportForDiscovery.html#c_SNMPSupportForDiscovery

Please refer below link for more info:

https://docs.servicenow.com/bundle/london-it-operations-management/page/product/discovery/reference/r_SNMPProbeParameters.html

Please after going through this mark it as helpful or correct.

Thanks,

Vinay

[VaranAwesomenow]

Dear James, wondering if you had a chance to get this working.