In Switch Port Mapper, we use SNMP protocol to get the ports and MAC address details. However, If CISCO switches are configured with SNMP v3, then we would not be able to get the ports and MAC address details using the normal SNMP query. This is due to the fact that the SNMP v3 in Cisco does not support without vlan -match prefix command enabled for SNMP-server.
In case of Cisco switches added using SNMP v3 credentials and does not show the MAC address details in the switch port mapper, then follow the below steps:
This single command creates multiple context name for its all vlan ids.
Change the type to auth or priv based on the security level used.
snmp-server group yourGroupName v3 auth context vlan- match prefix read ViewName
Then execute below command also for include mibs. (Ignore if the commands are already configured).
snmp-server view ViewName iso included
snmp-server view ViewName mib-2 included
snmp-server view ViewName cisco included
write memory (to make sure the configuration is saved).
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