Cabletron Systems ATX, Reference Manual

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Chapter 10: Cabletron MIB
10-32 ATX MIB Reference Guide
If the NMS wants to create a map of which devices exist on which LANs, then
the NMS should read all of the dynamically learned addresses from all bridges,
and use the spanning tree states of the bridges’ ports to determine the devices
actual locations.
To read all of a ATX’s dynamically learned addresses, 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 addrOperation with the “read-block” operation code. This will cause
the ATX to update the addrBlockSize and addrBlock parameters about a
block of addresses, and update addrNext to contain the value for
addrIndex if one desires to obtain the next block of entries (addrNext
will be set to -1 if there is no next block).
Step 3. Set the desired fields (typically addrNext, addrBlockSize, and
addrBlock) to NULL within the SetRequest PDU, or, issue a
GetRequest (s) for the desired fields.
Many of the Addresses Configuration Group parameters have an access code of
Write-Ignore, which is like Read-Only since the parameters’ values are not
changed by SetRequests; however, it is different in that SetRequests do not cause
access violations.
The Addresses Configuration Group consists of the parameters described below.
addrStatics {addr 1}
Counter Read-Only
The number of static addresses which are currently stored in the ATX.
addrDynamics {addr 2}
Counter Read-Only
The number of learned addresses in the ATX’s address table.
addrDynamicMax {addr 3}
Gauge Read-Write
The maximum number of spanning tree addresses which have been learned since
the ATX was last booted (or this parameter was last reset by the NMS).