Can I get serial numbers of routers (2500, 26xx) and switches using SNMP? Which SNMP OID I have to use?
Have a look at this link:
In the old document, it mentioned about OLD-CISCO-CHASSIS-MIB and the OID chassisId
(.220.127.116.11.18.104.22.168.6.3), but it can be replaced by the new ENTITY-MIB.my mib and the OID entPhysicalSerialNum (.22.214.171.124.126.96.36.199.188.8.131.52.11).