This error is encountered when configuring a seed file for Layer2 mapping.
To start with, OpManager checks whether the given seed device is a Router or L3 Switch based on the criteria mentioned below:
Criteria for Router :
.126.96.36.199.188.8.131.52 - IpForwarding should be 1
.184.108.40.206.220.127.116.11.1.1 - Should return more than two interfaces.
Criteria for Switch :
.18.104.22.168.22.214.171.124.4.1.1 - Bridge mib should be implemented.
OpManager queries the OIDs in following order : First CDP/LLDP OIDs, next IP routing table, then, if there is a switch connection, it queries the Bridge MIB and then ARP cache table. If OpManager is not able to get any device connection to the seed router/L3 switch, the error message "Device mapping does not exist for this map" is displayed.
Both the seed device (router/L3 switch) and the devices in the given IP range should be SNMP enabled
List of OIDs used for Layer2 Discovery : BRIDGE-MIB :