nanog mailing list archives
Re: Maintenance modems and power failures
From: I Am Not An Isp <patrick () ianai net>
Date: Thu, 11 Feb 1999 00:36:40 -0800
At 06:38 PM 2/10/99 -0800, Austin Schutz wrote:
Get two modems. POTS ---- Modem 0 ---- Modem 1 | | UPS AC Utility AC This only really makes sense if you have your terminal server w/ redundant power, one utility AC and the other UPS AC.
Actually, this will work better with two POTS lines, and two terminal servers. I like two different types of terminal servers - a 25/26xx (the 26xx with 32 async ports is kewlio), and something like a Sentry remote reboot device with async ports. Be sure one modem/terminal server combo is plugged into the utility power and the other modem/terminal server combo is plugged into the UPS. (You'd feel dumb if the terminal server was plugged into the wall and the modem into the UPS. :) The obvious problem here is that it is much more expensive than the normal OOB setup. But if you are going to have remote reboot equipment anyway, getting a Sentry with the terminal server isn't that much more expensive than the one without. This also gets you around stupid problems like IOS bugs. Now you just have to figure out which devices' console ports to plug into which terminal server. :p
Austin
TTFN, patrick I Am Not An Isp www.ianai.net ISPF, The Forum for ISPs by ISPs, <http://www.ispf.com> "Think of it as evolution in action." - Niven & Pournelle
Current thread:
- Maintenance modems and power failures Sean Donelan (Feb 10)
- Re: Maintenance modems and power failures George Herbert (Feb 10)
- <Possible follow-ups>
- Re: Maintenance modems and power failures Jeff Weisberg (Feb 10)
- Re: Maintenance modems and power failures Austin Schutz (Feb 10)
- Re: Maintenance modems and power failures I Am Not An Isp (Feb 11)
- Re: Maintenance modems and power failures Sean Donelan (Feb 10)
- Re: Maintenance modems and power failures Ron Buchalski (Feb 11)
- Re: Maintenance modems and power failures Joseph Lapolito (Feb 11)
- Re: Maintenance modems and power failures I Am Not An Isp (Feb 11)
- Re: Maintenance modems and power failures Bryan Bradsby (Feb 12)
- Re: Maintenance modems and power failures I Am Not An Isp (Feb 11)
- RE: Maintenance modems and power failures Dan Rabb (Feb 11)
- RE: Maintenance modems and power failures I Am Not An Isp (Feb 11)