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SNMP Monitoring applications may require the SNMP Engine ID to accept traps when using SNMPv3 for security reasons.
From RFC5343: Simple Network Management Protocol (SNMP) Context EngineID Discovery SNMP version 3 (SNMPv3) provides cryptographic security to protect devices from unauthorized access. This specification recommends use of the security services provided by SNMPv3. In particular, it is RECOMMENDED to protect the discovery exchange. An snmpEngineID can contain information such as a device's MAC address, IPv4 address, IPv6 address, or administratively assigned text. For PowerVault ME4 and ME5 arrays this value is based on the controller module management interface MAC address and is different for each controller interface.
Because this value is unique for each controller and administrator may need to query a specific SNMP OID to get this value. This can be done by using the following method and an application such as SNMPWalk from {snmpsoft.com} Based on the SNMP specification the EngineID is located in SNMP at the following OID location: 1.3.6.1.6.3.10.2.1.1 For example running SNMPwalk on a controller with a MAC address of 00 C0 FF 3C C7 11 resulted in the following output. C:\Tools\Snmpwalk>SnmpWalk.exe -r:10.236.249.232 -c:public -os:1.3.6.1.6.3.10.2.1.1OID=.1.3.6.1.6.3.10.2.1.1.0, Type=OctetString, Value= 80 00 1F 88 03 00 C0 FF 3C C7 11 In the above example the SNMP Engine ID for the controller is: 80 00 1F 88 03 00 C0 FF 3C C7 11
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