Standard Mibs - McDATA 316095-B21 - StorageWorks Edge Switch 2/24 Manual

Standard MIBs

4. If privacy is needed, the message is decrypted using the private
key; it is encrypted again before sending back.
NOTE: The authentication/privacy key (password) configured for an
SNMPv3 user on a switch is not localized. Therefore, the
authentication/privacy key configured in the SNMP management
application must be configured as a non-localized authentication/privacy
key in ASCII format. For more information on localization, refer to
http://www.ietf.org/rfc/rfc3414.txt?number=3414.
VACM Message Access Control
The following steps describe how SNMPv3 messages are processed
in the View-based Access Control Model:
1. A security name and security model pair are mapped to a group
name string. On receiving the packet, the agent checks for the
user name and security model and extracts the group name from
the security-to-group name table.
2. The vacmContextTable is used to store all locally available contexts.
The contextName found in the scoped PDU is then searched in
this table. If the search is successful, it gives an index of the
context in the table. Otherwise a noSuchContext error is returned.
3. The vacmAccessTable is used get the view name of the MIB to be
referenced. This decision is based on the group name, context
name, security model and security level. The security model and
security level are derived from the received packet.
4. The derived view name is used to index into the
vacmFamilyTreeTable for access checking. The OID of a managed
object is then checked against this MIB view. If the OID is part of
the current MIB view, then access is granted; otherwise
errorIndication (notInView) is returned.
Currently, you can configure SNMPv3 only through the command
line interface (CLI) of the switch. Refer to the E/OS Command Line
Interface User Manual for detailed information about the commands
and their respective parameters.
Standard MIBs are those created and approved by the Internet
Engineering Task Force (IETF) and other Internet standards bodies
and are readily available for use with SNMP network management
stations. The standard MIBs provide a baseline of common
Network Management using SNMP
Introduction to SNMP
1
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