nanog mailing list archives
Re: IPIP-tunnel with 1500 MTU
From: Mikael Abrahamsson <swmike () swm pp se>
Date: Thu, 11 Jan 2001 20:35:13 +0100 (CET)
On Thu, 11 Jan 2001 Valdis.Kletnieks () vt edu wrote:
Why is it "not acceptable"? Can you configure a Path MTU of 1450 to avoid fragmenting, or run Path MTU Discovery?
<customer location 2> | our router2 | tunnel our net | tunnel our router1 | <customer location 1> | customers NATbox | customers internetconnection | another machine The "NEED TO FRAG"-ICMPs generated by our router1 when "another machine" sends packets with 1500 MTU size and DF flag set will be about RFC1918 adresses when "another machine" think's it's talking to the address of the NATbox. Breaks everything. Anyhow, P-MTUd is broken in too many places in the internet anyway. -- Mikael Abrahamsson email: swmike () swm pp se
Current thread:
- IPIP-tunnel with 1500 MTU Mikael Abrahamsson (Feb 24)
- Re: IPIP-tunnel with 1500 MTU Valdis . Kletnieks (Feb 24)
- Re: IPIP-tunnel with 1500 MTU Mikael Abrahamsson (Feb 24)
- RE: IPIP-tunnel with 1500 MTU Craig Holland (Feb 24)
- <Possible follow-ups>
- RE: IPIP-tunnel with 1500 MTU Mikael Abrahamsson (Feb 24)
- Re: IPIP-tunnel with 1500 MTU Stephen Sprunk (Feb 24)
- Re: IPIP-tunnel with 1500 MTU Mikael Abrahamsson (Feb 24)
- Re: IPIP-tunnel with 1500 MTU Valdis . Kletnieks (Feb 24)