nanog mailing list archives
RE: IPv6 day and tunnels
From: "Templin, Fred L" <Fred.L.Templin () boeing com>
Date: Tue, 5 Jun 2012 08:00:59 -0700
-----Original Message----- From: Mark Andrews [mailto:marka () isc org] Sent: Tuesday, June 05, 2012 7:55 AM To: Templin, Fred L Cc: Owen DeLong; Jimmy Hess; nanog () nanog org Subject: Re: IPv6 day and tunnels In message <E1829B60731D1740BB7A0626B4FAF0A65D374A86CB@XCH-NW- 01V.nw.nos.boeing .com>, "Templin, Fred L" writes:A quick comment on probes. Making the tunnel ingress probe is tempting but fraught with difficulties; believe me, I have tried. So, having the tunnel ingress fragment when necessary in conjunction with the original source probing is the way forward, and we should advocate both approaches. RFC4821 specifies how the original source can probe with or without tunnels in the path. It does not have any RTT delays, because it starts small and then tries for larger sizes in parallel with getting the valuable data through without loss.It's useful for TCP but it is not a general solution. PTB should not be being blocked and for some applications one should just force minimum mtu use.
Any packetization layer that is capable of getting duplicate ACKs from the peer can do it. Plus, support for just TCP is all that is needed for the vast majority of end systems at the current time. Thanks - Fred fred.l.templin () boeing com
Thanks - Fred fred.l.templin () boeing com-- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka () isc org
Current thread:
- Re: New routing systems (Was: IPv6 day and tunnels), (continued)
- Re: New routing systems (Was: IPv6 day and tunnels) Jeroen Massar (Jun 05)
- RE: IPv6 day and tunnels Templin, Fred L (Jun 05)
- Re: IPv6 day and tunnels Masataka Ohta (Jun 05)
- Re: IPv6 day and tunnels Owen DeLong (Jun 04)
- Re: IPv6 day and tunnels Jimmy Hess (Jun 04)
- Re: IPv6 day and tunnels Owen DeLong (Jun 04)
- Re: IPv6 day and tunnels Joe Maimon (Jun 05)
- Re: IPv6 day and tunnels Owen DeLong (Jun 05)
- RE: IPv6 day and tunnels Templin, Fred L (Jun 05)
- Re: IPv6 day and tunnels Mark Andrews (Jun 05)
- RE: IPv6 day and tunnels Templin, Fred L (Jun 05)
- Re: IPv6 day and tunnels Jimmy Hess (Jun 05)
- Re: IPv6 day and tunnels Owen DeLong (Jun 05)
- Re: IPv6 day and tunnels Jimmy Hess (Jun 05)
- Re: IPv6 day and tunnels Owen DeLong (Jun 05)
- Re: IPv6 day and tunnels valdis . kletnieks (Jun 06)
- Re: IPv6 day and tunnels Joe Maimon (Jun 06)
- RE: IPv6 day and tunnels Templin, Fred L (Jun 06)
- Re: IPv6 day and tunnels Owen DeLong (Jun 04)
- Re: IPv6 day and tunnels Joe Maimon (Jun 04)
- RE: IPv6 day and tunnels Templin, Fred L (Jun 04)