[mrtg] Re: Cisco catalyst 29xx series

[Anthony Valuikas]

Well I spoke too soon. I went to another switch which is fully used (all
ports taken) and the OID reports 0.

???

Tony

-----Original Message-----
From: Andy Ziegelbein [mailto:andy_ziegelbein at rac.ray.com]
Sent: Wednesday, December 19, 2001 9:22 AM
To: dave brett; Anthony Valuikas
Cc: mrtg at list.ee.ethz.ch
Subject: RE: [mrtg] Re: Cisco catalyst 29xx series


Try one of the following:

For multi-backplane switches (e.g. 5500)...
cisco.workgroup.ciscoStackMIB.systemGrp.sysTrafficMeterTable.sysTrafficM
eterEntry.sysTrafficMeter.1
1.3.6.1.4.1.9.5.1.1.32.1.2.1

For single-backplane switches (e.g. 5505, 6500)...
cisco.workgroup.ciscoStackMIB.systemGrp.sysTraffic.0
1.3.6.1.4.1.9.5.1.1.8.0

For 2900XL/3500XLs...
cisco.ciscoMgmt.cisco2900MIB.c2900MIBObjects.c2900BandwidthUsage.c2900Ba
ndwidthUsageCurrent.0
1.3.6.1.4.1.9.9.87.1.5.1

See the following for details on collecting Cisco switch backplane
utilization:
http://www.cisco.com/warp/public/477/SNMP/cat-switch_backplane_util.html

Other useful SNMP documents pertaining to Cisco equipment can be found
at the following address:
http://www.cisco.com/warp/public/477/SNMP/snmp-indx.html

Good luck.
Andy

P.S.  Here is the description of the 2900XL/3500XL MIB..

cisco.ciscoMgmt.cisco2900MIB.c2900MIBObjects.c2900BandwidthUsage.c2900Ba
ndwidthUsageCurrent

The current bandwidth consumed.  The measurement unit is
in megabits per second (1,000,000 bits/second).
This value gives a reasonable estimate of the amount of
traffic currently flowing through the switch.

It is calculated as follows:

Octets*8 + Frames*(96 + 64)
---------------------------
Measurement Interval * 1,000,000 * 2

Where:
Measurement Interval is the amount of time over which
the Octets and Frames were collected, in seconds.

Measurement Interval is always one second in current
implementation.

Octets is the total number of octets transmitted
or received by all network interfaces, excluding
framing data but including FCS. This includes octets
in frames which were partially transmitted or
received (due to collisions, for example).

Frames is the total number of frames transmitted
or received by all network interfaces, including
frames with errors.

The number of frames is multiplied by 96 plus 64 in
order to estimate the delay between each frame for
Ethernet's IPG and preamble/SFD.

The '2' in the divisor makes this a forwarding bandwidth
counter. A frame received on one interface is typically
forwarded out another interface. In order to avoid double-
counting this frame's bandwidth, once on the receiving
interface and once on the transmitting interface, the
total bandwidth is divided by two.
Since multicast and broadcast frames can be sent to multiple
ports, the above is at best a lower bound.

-----Original Message-----
From: dave brett [mailto:dbrett at tcn.net]
Sent: Wednesday, December 19, 2001 8:42 AM
To: Anthony Valuikas
Cc: mrtg at list.ee.ethz.ch
Subject: [mrtg] Re: Cisco catalyst 29xx series



Have you been able to find the backplane oid for other catalyst?  I have
been looking without much sucess.

david

On Wed, 19 Dec 2001, Anthony Valuikas wrote:

>
> Does the 29xx series switch have anything like a "backplane
utilization"
> OID. (if that is even what you would call it) I would like to graph
just how
> busy the switch is (total internal traffic) but up until now have only
been
> able to think of combining all of the ports less the VLAN and Fiber?
>
>
> Thanks
> Tony
>
>
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