1. SNMP on the switches is configured and working. We use SNMP v2. Switches respond to snmpwalk.2. We use snmpwalk or snmpbulkwalk to get tables3. For ARP tables, OID .1.3.6.1.2.1.4.22.1.2 is used4. For MAC tables, OID .1.3.6.1.2.1.17.4.3.1.2 is used...

Hi.We purchased used switch Catalyst WS-C3750E-24TD. Output (show version) from it is the end of this letter.And we found that it writes to the console:ILET-1-AUTHENTICATION_FAIL: This Switch may not have been manufactured by Cisco or with Cisco's au...