Network Insight SNMP V3 Config assistance

sgeorge1111

Hi, we are implementing Network Insight, heard we need to enable MIB Internet on Cisco Switches. What is the command to enable MIB internet, normally Cisco enabled all MIBs for SNMP walk. MIB Internet is a requirement for Network Insight? Thanks

tchristensen

Hi, generally no special Cisco command is required just to “enable MIB Internet.” On most Cisco switches, once SNMP is enabled, the standard Internet/MIB-II objects are already available unless you have configured a restricted SNMP view.

For Network Insight, the important point is that it relies heavily on SNMP for discovery and collects standard system OIDs such as sysDescr and sysUpTime, along with routing, forwarding, and ARP-related data. Infoblox guidance also references collecting an SNMP walk from the 1.3 subtree for device discovery/support workflows. That means Network Insight needs access to the relevant standard SNMP OIDs; it is not usually a separate “turn on MIB Internet” requirement. See Infoblox KBs on discovery methods and device support / SNMP walk collection.

If the switch is using an SNMP view that limits what can be read, then you should include the Internet/MIB-II tree in that view. On Cisco, an example would be:

snmp-server view NI_VIEW internet included

or commonly:

snmp-server view NI_VIEW mib-2 included

Then apply that view to the SNMP community or SNMPv3 group as appropriate.

So the short answer is:

• If you are using default SNMP access on Cisco, you usually do not need an extra command.
• If you are using restricted SNMP views, make sure the view includes internet or at least mib-2.
• For Network Insight, the real requirement is successful SNMP access to the standard discovery OIDs, not a special standalone “MIB Internet” toggle.

Cisco references for SNMP views and defaults are here: SNMP Configuration Guide example using snmp-server view ... mib-2 included and Cisco SNMP security/view behavior.