[mrtg] MRTG and VLAN again.

metha Tharaporn metha at multilink.co.th
Fri Oct 24 07:19:52 MEST 2003

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Hi All
        I have a AVAYA Cajun P882 switch and I need to graph the traffic =
statistic for each VLAN on it with MRTG. Below is the process AVAYA's =
SMON Manager work to collect and display the VLAN Statistic on AVAYA =
1. after you had started the P882 Device Manager - Device SMON - VLAN =

2. the SMON manager (written by Avaya) will go and learn
-   the modules installed in the switch using ProminetMIB - Avaya =
private MIBs
-   the vlans configured in the switch (ProminetMIB)
-   it will then learn what are the interfaces (ports) installed (using =
RMON and ProminetMIB)

3. when the Device SMON manager polled the switch for info
-   it will first retrieve the switch current time (MIB2)
-   Using ProminetMIB - find the vlans active on the switch and the vlan =
assigned to each port
-   once they know the ports, it will retrieve ifInOctets, =
ifInUcastPkts, ifInNUcastPkts (MIB2) from all the ports

4. The Device SMON manager will then sum the ifInOctets, ifInUcastPkts, =
ifInNUcastPkts for each vlan and then present it in the graph.

        Because, SMON statistics does not just poll the data from a =
single object. I have to use several different MIBs object to get the =
information required. Because of I know a little about MRTG and MIB. My =
question are:=20
        1. Can I do graph the VLAN statistic of each VLAN on AVAYA =
switch by MRTG like                 SMON manager or not ?=20

        The attachment are all the MIB files used by SMON manager and =
also a sniffer trace file showing how SMON manager collect the VLAN =
statistic. Any advice, tips, feedback, etc. would be greatly =

Regards      =20

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