[mrtg] Monitoring true usage on a FDDI service

Ray Warrier Ray.Warrier at torex.com
Fri Sep 27 13:11:23 MEST 2002

Dear All,
I have a query about true FDDI usage.
We have an FDDI ring with FDDI concentrators. Off one of the
concentrators interface we have plugged a
connection to a Cisco 5500 switch FDDI card.
I have asked MRTG to monitor the interface in/out octets on the Cisco
FDDI card.
The stats being produced looked extremely low, approx 1%
To confirm the stats are correct I plugged a Sniffer with an FDDI card
into the concentrator and saw that
the true utilisation was around 30%.
How can I get MRTG to collect all data transmissions and not traffic
destined for the Cisco FDDI interface ?
Additional information:
We are unable to run SNMP on the concentrator's because it is a third
party managed service. They are unwilling
to switch on SNMP.
Many thanks,


Network Consultant - Torex Health

P.O. Box 16, Kingswood Road, Prestwich, Manchester. M25 3BP

Email : ray.warrier at torex.com <mailto:ray.warrier at torex.com>   Web :
http://www.torex.com <http://www.torex.com/> 

Tel: +044 (0) 161 773 9211 (2236) Fax: +044 (0) 161 773 1211

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