nanog mailing list archives
Re: MTU to CDN's
From: Mike Hammett <nanog () ics-il net>
Date: Fri, 19 Jan 2018 08:07:09 -0600 (CST)
Wouldn't those situations be causing issues now, given the likelihood that someone with a less than 1,500 byte MTU is communicating with you now? ----- Mike Hammett Intelligent Computing Solutions http://www.ics-il.com Midwest-IX http://www.midwest-ix.com ----- Original Message ----- From: "Mikael Abrahamsson" <swmike () swm pp se> To: "Mike Hammett" <nanog () ics-il net> Cc: "NANOG list" <nanog () nanog org> Sent: Friday, January 19, 2018 8:05:17 AM Subject: Re: MTU to CDN's On Fri, 19 Jan 2018, Mike Hammett wrote:
Other than people improperly blocking ICMP, when does PMTUD not work? Honest question, not troll.
Mismatch of MTU interface settings between interfaces, mismatch of MTU between L3 devices and intermediate L2 devices, anycast services, ECMP based services where the ICMP error is delivered to the wrong node. So yes, there are plenty reasons that PMTUD doesn't work without anyone doing it because of ill will or incompetence. -- Mikael Abrahamsson email: swmike () swm pp se
Current thread:
- Re: MTU to CDN's, (continued)
- Re: MTU to CDN's Jared Mauch (Jan 19)
- Re: MTU to CDN's William Herrin (Jan 19)
- Re: MTU to CDN's Radu-Adrian Feurdean (Jan 19)
- Re: MTU to CDN's Mark Andrews (Jan 19)
- Re: MTU to CDN's Mikael Abrahamsson (Jan 19)
- Re: MTU to CDN's Vincent Bernat (Jan 18)
- Message not available
- Message not available
- Re: MTU to CDN's Michael Crapse (Jan 18)
- Re: MTU to CDN's Mikael Abrahamsson (Jan 18)
- Re: MTU to CDN's Mike Hammett (Jan 19)
- Re: MTU to CDN's Mikael Abrahamsson (Jan 19)
- Re: MTU to CDN's Mike Hammett (Jan 19)
- Re: MTU to CDN's Jared Mauch (Jan 19)
- Re: MTU to CDN's Mike Hammett (Jan 19)
- Re: MTU to CDN's Mikael Abrahamsson (Jan 19)
- Re: MTU to CDN's Vincent Bernat (Jan 19)
- Re: MTU to CDN's William Herrin (Jan 19)
- Re: MTU to CDN's Olivier Benghozi (Jan 19)
- Re: MTU to CDN's Ruairi Carroll (Jan 19)
- Re: MTU to CDN's William Herrin (Jan 19)
- Re: MTU to CDN's Mark Andrews (Jan 08)