Christo Burger wrote:
> I have downloaded the 8272 mib from the IBM networking site but I am looking
> for the mib entry to query for port details i.e. I want to query the port
> and get a list of Mac addresses attached to that port ( LAN segment ).
Christo,
I cannot tell you what the IBM-specific variable is for your device but you can
get the hub/switch port-to-end device MAC table from mib-2, which is far more
generic. For hubs, checkout the variable from the repeater table below and for
switches, the bridge table.
MIB-2 has standard subtrees that support repeaters and bridges.
The MIB OID to the appropriate hub table is .1.3.6.1.2.1.22.3.3.1.1 or
snmpDot3RptrMgt.rptrAddrTrackPackage.rptrAddrTrackPortInfo.rptrAddrTrackTable.rptrAddrTrackEntry
from mib-2. This table has 5 entries, of which we are interested in 2:
.5 rptrAddrTrackNewLastSrcAddress is a last-seen MAC address
.2 rptrAddrTrackPortIndex the port this MAC was seen on
The MIB OID to the appropriate switch table is .1.3.6.1.2.1.17.4.3.1 or
dot1dBridge.dot1dTp.dot1dTpFdbTable.dot1dTpFdbEntry
from mib-2. This table has 3 entries, of which we are interested in 2:
.1 dot1dTpFdbAddress is a last-seen MAC address
.2 dot1dTpFdbPort is the port this MAC was seen on
I use these tables in a script that is run periodically so I can build a picture
of which devices are physically attached to which hubs/switches. You do get a
few "funnies", but largely it does what's required. I also add in a
registration file so that you can run these queries from the NetView menus.
Regards,
Jane
--
Tivoli Certified Enterprise Consultant & Instructor
Skills 1st Limited, 2 Cedar Chase, Taplow, Bucks, SL6 0EU, UK
Tel: +44 (0)1628 782565
Copyright (c) 2000 Jane Curry <jane.curry@skills-1st.co.uk>. All rights
reserved.
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