DescriptionUnable to Model Supported Device Using SNMP v3
ScopeVersion: Network Sentry 8
SolutionVersion: Network Sentry 8
Issue: Adding a Device using SNMP v3 whose System OID is supported still displays as a question mark (?).
Network Sentry requires the ability to read the sysDescription OID (1.3.6.1.2.1.1.1.0). This OID contains certain information (such as IOS version for Cisco devices) which is used to determine how to characterize and manage the device. If the device does not respond to queries for this OID, then Network Sentry cannot model it properly.
Query the sysDescription OID via Network Sentry using the snmpwalk tool:
snmpwalk -v 3 -u <username> -l <AuthPriv or NoAuthPriv> -a <MD5 or SHA> -A <password> -x <DES or AES> -X <password> <device ip_address> 1.3.6.1.2.1.1.1.0
Example of a normal response:
SNMPv2-MIB::sysDescr.0 = STRING: Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(2)S3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Fri 25-Mar-16 16:59 by mcpre
Failing response:
SNMPv2-MIB::sysDescr.0 = No Such Object available on this agent at this OID
Something on the device side is preventing it from responding with the information.
Solution: Ensure the SNMP v3 permissions on the device allow for access to this OID. For assistance, contact vendor support.
