HP StorageWorks 2/140 FW 08.01.00 McDATA E/OS SNMP Support Manual (620-000131- - Page 492

SNMP Framework MIB F Description Sequence The SNMP Management Architecture MIB. ::= { snmpModules 10 } Textual Conventions SnmpEngineID Status Description current An SNMP engine's administratively-unique identifier. The value for this object may not be all zeros or all 'ff'H or the empty (zero length) string. The initial value for this object may be configured via an operator console entry or via an algorithmic function. In the latter case, the following example algorithm is recommended. In cases where there are multiple engines on the same system, the use of this algorithm is NOT appropriate, as it would result in all of those engines ending up with the same ID value. 1. The very first bit is used to indicate how the rest of the data is composed. 0 as defined by enterprise using former methods that existed before SNMPv3. See item 2 below. 1 as defined by this architecture, see item 3 below. Note that this allows existing uses of the engineID (also known as AgentID [RFC1910]) to co-exist with any new uses. 2. The snmpEngineID has a length of 12 octets. The first four octets are set to the binary equivalent of the agent's SNMP management private enterprise number as assigned by the Internet Assigned Numbers Authority (IANA). For example, if Acme Networks has been assigned { enterprises 696 }, the first four octets would be assigned '000002b8'H. The remaining eight octets are determined via one or more enterprise-specific methods. Such methods must be designed so as to maximize the possibility that the value of this object will be unique in the agent's administrative domain. For example, it may be the IP address of the SNMP entity, or the MAC address of one of the interfaces, with each address suitably padded with random F-2 E/OS SNMP Support Manual