nanog mailing list archives
Re: reliably detecting the presence of a bridge?
From: Jared Mauch <jared () puck Nether net>
Date: Tue, 15 Dec 2015 08:04:36 -0500
On Tue, Dec 15, 2015 at 10:48:50AM +0100, Dave Taht wrote:
I am curious if there is some sort of igmp or other form of message that would reliably detect if a switch had a bridge on it. How could deviceA detect deviceC was a bridge in this case? deviceA -> ethernet switch -> deviceB ethernet switch -> deviceC with bridged wifi and ethernet question came up in the context of: http://lists.alioth.debian.org/pipermail/babel-users/2015-December/002231.html
The best way I've seen is to measure latency to the devices and infer from there. You can always make the latency longer, but making it shorter is much harder :) - Jared -- Jared Mauch | pgp key available via finger from jared () puck nether net clue++; | http://puck.nether.net/~jared/ My statements are only mine.
Current thread:
- reliably detecting the presence of a bridge? Dave Taht (Dec 15)
- Re: reliably detecting the presence of a bridge? Jared Mauch (Dec 15)
- Re: reliably detecting the presence of a bridge? Matthew Kaufman (Dec 15)
- Re: reliably detecting the presence of a bridge? William Herrin (Dec 15)
- Re: reliably detecting the presence of a bridge? Dave Taht (Dec 16)
- Re: reliably detecting the presence of a bridge? Masataka Ohta (Dec 16)
- Message not available
- Re: reliably detecting the presence of a bridge? Carsten Bormann (Dec 16)
- RE: reliably detecting the presence of a bridge? Chuck Church (Dec 16)
- Re: reliably detecting the presence of a bridge? Anoop Ghanwani (Dec 16)
- Re: reliably detecting the presence of a bridge? Dave Taht (Dec 19)
- Re: reliably detecting the presence of a bridge? Dave Taht (Dec 16)
- Re: reliably detecting the presence of a bridge? William Herrin (Dec 19)
- Re: reliably detecting the presence of a bridge? Larry Sheldon (Dec 19)