nanog mailing list archives
Re: V6 still not supported
From: Owen DeLong via NANOG <nanog () nanog org>
Date: Tue, 22 Mar 2022 10:54:00 -0700
On Mar 21, 2022, at 12:21, Bjørn Mork <bjorn () mork no> wrote: Owen DeLong via NANOG <nanog () nanog org> writes:Virtually every useful flow of packets in one direction requires a relatively symmetrical flow of packets in the other direction.Packet captures are useful without anything being returned. It's not uncommon to use some sort of unidirectional tunnel to transport captures over an IP-network.
By definition, packet captures can’t be more than 50% of useful traffic and the traffic they are capturing is almost certainly a bidirectional flow of some form. I’m willing to bet that packet captures are well below 1% of all traffic. I’m willing to bet that less than 25% of all packet captures are transported Over unidirectional tunnels, though I admit I could be wrong about this.
Same goes for logging. Traditional udp syslog is a one-way street.
True, but most environments I’m familiar with have been moving away from syslog in favor of some form of guaranteed delivery, which requires a two-way street. Also, if a significant fraction of your traffic is logging, you’re probably doing something wrong. (Note the word “Virtually” in “Virtually all”).
And I'm sure there are more examples.
Perhaps, but I still say that in terms of overall total traffic, they are mostly a rounding error.
Not that I think it matters in this discussion, which appears more circular than bidirectional.
That’s probably fair. Owen
Current thread:
- Re: V6 still not supported, (continued)
- Re: V6 still not supported Matt Hoppes (Mar 17)
- Re: V6 still not supported borg (Mar 18)
- Re: V6 still not supported Owen DeLong via NANOG (Mar 18)
- Re: V6 still not supported Matt Hoppes (Mar 19)
- Re: V6 still not supported Tom Beecher (Mar 19)
- Re: V6 still not supported John Levine (Mar 19)
- Re: V6 still not supported Mark Delany (Mar 19)
- RE: V6 still not supported Vasilenko Eduard via NANOG (Mar 21)
- Re: V6 still not supported Owen DeLong via NANOG (Mar 21)
- Re: V6 still not supported Bjørn Mork (Mar 21)
- Re: V6 still not supported Owen DeLong via NANOG (Mar 22)
- Re: V6 still not supported Randy Carpenter (Mar 19)
- Re: V6 still not supported borg (Mar 20)
- Re: V6 still not supported John Levine (Mar 18)
- Re: V6 still not supported bzs (Mar 18)
- Re: V6 still not supported Saku Ytti (Mar 19)
- Re: V6 still not supported Masataka Ohta (Mar 20)
- Re: V6 still not supported Randy Carpenter (Mar 09)
- Re: V6 still not supported Seth Mattinen (Mar 09)
- Re: V6 still not supported (was Making Use of 240/4 NetBlock) Tim Howe (Mar 09)
- Re: V6 still not supported (was Making Use of 240/4 NetBlock) Dave Taht (Mar 09)