Cabletron Systems ATX, Справочное руководство

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Chapter 10: Cabletron MIB
10-30 ATX MIB Reference Guide
10.3.5 Addresses Configuration Group
addr {ecs-1 5}
This attribute group allows the NMS to examine the current address table entries,
as well as to remove both static and learned entry information, or to add and
modify pre-defined entry information (modifying certain entry information may
cause the entire entry to be deleted), or to zero an entry’s statistics.
The Addresses Configuration Group contains a few statistics about the entire
Filtering Database, and information about the entry last examined or modified by
the NMS. Therefore, the SNMP GetNextRequest PDU is not appropriate to read
the entire Filtering Database. Instead, the NMS must perform the following steps:
Step 1. Set addrIndex with the desired starting point (-1 will cause the database
to be read from the beginning).
Step 2. Set addrIndexMesh to indicate whether any type of entry is desired, or
just Cabletron Mesh Algorithm bridge addresses. The addrIndexMesh
parameter does not have to be reset between successive read-next
operations.
Step 3. Set addrOperation with the “read-next” operation code. This will cause
the ATX to update the Addresses Configuration Group fields about the
entry, which includes updating addrNext to contain the value for
addrIndex if one desires to obtain the next entry (addrNext will be set to
-1 if there is no next entry).
Step 4. Set the desired fields to NULL within the SetRequest PDU, or, issue a
GetRequest(s) for the desired fields.
If the addrFlags field is returned with a value of zero, then no entry has been
returned, and the NMS should continue trying to read-next, until addrNext is
returned with a value of -1.
To read a single specific entry, the NMS must perform the following steps:
Step 1. Set addrMAC with the desired MAC address.
Step 2. Set addrOperation with the “read-random” operation code. This will
cause the ATX to update the Addresses Configuration Group fields
about the entry.
Step 3. Set the desired fields to NULL within the SetRequest PDU, or, issue a
GetRequest (s) for the desired fields.