To all What would you want the probe to monitor? I have not read the MIBs yet mainly because I have not found any documentation on what each MIB does so far (granted, I haven't spent much time on it yet).
I'm think of starting off with just basic host resource monitoring, but I hope that there is an OID that reports number of APs down. I'd basically look for how the system is doing overall, bandwidth utilization and if there are any APs down, but only if there is an OID that has that info. I'm thinking, polling a table would be useless, since I can't alert on anything in that table. Any other ideas of what would be interesting to look for without have 2-4 sec response times? -------------- Andrey Khomyakov | Senior Network Engineer | +1.617.879.5945 Confidentiality Note: This e-mail, and any attachment to it, is intended to be confidential and might be legally privileged. It is intended solely for the use of the addressee. If you are not the intended recipient, you are hereby notified that reading, copying, disseminating or distributing this email is strictly prohibited. If you have received this e-mail in error, please immediately return it to the sender and delete it from your system. Thank you. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jon Myers Sent: Thursday, April 08, 2010 10:31 AM To: InterMapper Discussion Subject: Re: [IM-Talk] Meru Wireless Probe? (and Aruba) We do a similar thing for Aruba, it was getting a little slow poking the controller for each AP separately. So instead, we do an snmp walk for a few interesting OIDs every minute to get the details for everything, and stick them in the database. Then the probe just looks in the database for the information, and cross references with our (home-grown) NAC system, and updates the details in the probe to show connections, usernames, locations, SNR, radio type, etc.. We're relatively small, only 300 APs (well, small compared to Debbie's > 2000 APs anyway). But still, poking at the controller to get all the stats I wanted for each AP, with a 1 minute poll interval seemed to have a long (~2-4 seconds) response time sometimes. Now that IM has a database you can sort of get to, it might be a bit easier to integrate the probe. I have not revisited my scripts to see how to put them into a newer separate-database driven IM. Just wanted to give some ideas on how it could be done. - - - Jon Myers (Top post to leave bottom part for reference only) At 01:41 PM 4/7/2010, Debbie Fligor wrote: >We do have Meru and we do monitor it. However, we found that the >controllers were not very responsive to SNMP, and we wanted to >summarize by building (we have > 2000 APs in ~ 230 buildings). so >we run a script on a unix system that talks SNMP to the controller >and generates a per-building summary (into a database these days, >IIRC), that has about a 5 minute history built in (to deal with the >SNMP failures). We also have a daemon listening on a socket that can >query the database. A simple TCP probe on Intermapper gets >up/down/warn status by asking for a specific building number and >getting back the number of down APs and total APs for that building >number. Since we name our access points wap-####-xx where #### is >the building number (and xx is sequence number), this isn't too hard to do. > >If this complex type of monitoring is of interest, I'll see about >sharing our scripts, we can usually do that. > >On Apr 7, 2010, at 10:44, <[email protected]> wrote: > > > Does anyone use InterMapper to poke Meru wireless controllers? I > would not want to reinvent the wheel. If not, I'll start writing > one (the probe :), not the wheel) and share it out. > > > > Andrey > > > > > > -------------- > > Andrey Khomyakov | Senior Network Engineer | +1.617.879.5945 > > > > > >----- >-debbie >Debbie Fligor, n9dn Network Engineer, CITES, Univ. of Il >email: [email protected] <http://www.uiuc.edu/ph/www/fligor> > "My turn." -River Tam ____________________________________________________________________ List archives: http://www.mail-archive.com/intermapper-talk%40list.dartware.com/ To unsubscribe: send email to: [email protected] ____________________________________________________________________ List archives: http://www.mail-archive.com/intermapper-talk%40list.dartware.com/ To unsubscribe: send email to: [email protected]
