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If SNMP engine ID is changed in the config>system>snmp> engineID engine-id context, the current configuration must be saved and a reboot must be executed. If not, the previously configured SNMP communities and logger trap-target notify communities will not be valid for the new engine ID.Note: In conformance with IETF standard RFC 2274, User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3), hashing algorithms which generate SNMPv3 MD5 or SHA security digest keys use the engineID. Changing the SNMP engineID invalidates all SNMPv3 MD5 and SHA security digest keys and may render the node unmanageable.The no form of the command reverts to the default setting.general-portgeneral-port port-numberThis command configures the port number used by this node to receive SNMP request messages and to send replies. Note that SNMP notifications generated by the agent are sent from the port specified in the config>log>snmp-trap-group>trap-target CLI command.The no form of the command reverts to the default value.
no access group group-nameTo remove a security model and security level combination from a group, use:
no access group group-name security-model {snmpv1 | snmpv2c | usm} security-level {no-auth-no-privacy | auth-no-privacy | privacy}Specifies that authentication is required but privacy (encryption) is not required. When this option is configured, both the group and the user must be configured for authentication.Specifies that both authentication and privacy (encryption) is required. When this option is configured, both the group and the user must be configured for authentication. The user must also be configured for privacy.context context-nameThe context-name is treated as either a full context-name string or a context name prefix depending on the keyword specified (exact or prefix).The VPRN context names begin with a vprn prefix. The numerical value is associated with the service ID that the VPRN was created with and identifies the service in the service domain. For example, when a new VPRN service is created such as config>service>vprn 2345 customer 1, a VPRN with context name vprn2345 is created.The exact keywork specifies that an exact match between the context name and the prefix value is required. For example, when context vprn2345 exact is entered, matches for only vprn2345 are considered.The prefix keyword specifies that only a match between the prefix and the starting portion of context name is required. If only the prefix keyword is specified, simple wildcard processing is used. For example, when context vprn prefix is entered, all vprn contexts are matched.
For SNMPv3 security, the access group command must be configured.The no form of the command removes a community string.community-string
(Default: none)viewOnce the subtree (OID) is identified, a mask can be created to select the portions of the subtree to be included or excluded for access using this particular view. See the mask command. The view(s) configured with this command can subsequently be used in read, write, and notify commands which are used to assign specific access group permissions to created views and assigned to particular access groups.The object identifier (OID) value for the view-name. This value, for example, 1.3.6.1.6.3.11.2.1, combined with the mask and include and exclude statements, configures the access available in the view.