Re: [nsp] mrtg and ATM subinterfaces

From: Hank Nussbacher (hank@att.net.il)
Date: Thu Jun 15 2000 - 13:49:37 EDT


At 12:01 15/06/00 -0400, jlewis@lewis.org wrote:

Even if you had an IP address to home in on, customers upgrade their lines,
move sites, etc. We use RDD and have locally defined that the Cisco
"descr" field has a customer number and a customer name. We found that
even customer name changes as companies get bought and sold (we get about
1-2 requests per month to change the company name of a customer).

By using a fixed customer number in the description, we can change the IP
or the customer name or whatever, move them to a different router and RDD
picks up who they are. Required some local code to get it done, but once
done, you can forget about the cisco reboots.

-Hank

>Has anyone come up with a way to have MRTG monitor traffic on ATM
>subinterfaces without having to manually fix the mrtg config every time
>you add/remove subinterfaces or reboot the cisco?
>
>The trouble is, as we add subinterfaces, they get numbered as:
>
>interfaces.ifTable.ifEntry.ifDescr.19 = "ATM1/0.7-atm subif"
>interfaces.ifTable.ifEntry.ifDescr.20 = "ATM1/0.7-aal5 layer"
>interfaces.ifTable.ifEntry.ifDescr.21 = "Virtual-Template1"
>interfaces.ifTable.ifEntry.ifDescr.22 = "BVI1" Hex: 42 56 49 31
>interfaces.ifTable.ifEntry.ifDescr.23 = "ATM1/0.8-atm subif"
>interfaces.ifTable.ifEntry.ifDescr.24 = "ATM1/0.8-aal5 layer"
>
>When we next reboot, I'm assuming ATM1/0.8's entries will move up before
>Virtual-Template1 and BVI1, changing their snmp ids. Since there are no
>IP addresses on the subinterfaces, I can't have MTRG find them by IP.
>
>Has anyone come up with something better than periodically regenerating
>the MRTG config, matching up ATM aal5 layer subs with their snmp ids?
>
>----------------------------------------------------------------------
> Jon Lewis *jlewis@lewis.org*| I route
> System Administrator | therefore you are
> Atlantic Net |
>_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________



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