nanog mailing list archives
Re: Long hops on international paths
From: Mark Tinka <mark@tinka.africa>
Date: Tue, 18 Jan 2022 17:23:02 +0200
On 1/18/22 16:28, Saku Ytti wrote:
2) MPLS-TTL expires in transit 2a) generate TTL exceeded and put it back to tunnel, sending it to egressPE, which is guaranteed to know how to return to sender
This is what we run - our core is BGP-free (LDP), so the traceroute value customers see will be the egress PE router.
2nd best is to tunnel, but the RTT will confuse uneducated, or as it may be, hjghly educated, users.
It is very confusing, even for some educated users.It's become less of problem, as years of educating users seems to have bedded in.
We could implement something like https://ytti.github.io/icmp-eo-timestamp/draft-ytti-intarea-icmp-eo-timestamp.html to offer correct forward latencies to P/LSR in 2a scenario.
I recall you and I chatted about this some 3 or so years ago. Do you know if anyone of the (un)usual suspects have implemented?
Mark.
Current thread:
- Re: Long hops on international paths, (continued)
- Re: Long hops on international paths Nick Hilliard (Jan 17)
- Re: Long hops on international paths PAUL R BARFORD (Jan 17)
- Re: Long hops on international paths Lukas Tribus (Jan 17)
- Re: Long hops on international paths PAUL R BARFORD (Jan 17)
- Re: Long hops on international paths Christopher Morrow (Jan 17)
- Re: Long hops on international paths Saku Ytti (Jan 17)
- Re: Long hops on international paths PAUL R BARFORD (Jan 18)
- Re: Long hops on international paths Saku Ytti (Jan 18)
- Re: Long hops on international paths Mark Tinka (Jan 18)
- Re: Long hops on international paths Saku Ytti (Jan 18)
- Re: Long hops on international paths Mark Tinka (Jan 18)
- Re: Long hops on international paths PAUL R BARFORD (Jan 17)
- RE: Long hops on international paths Michael Hare via NANOG (Jan 18)
- Re: Long hops on international paths Saku Ytti (Jan 18)
- Re: Long hops on international paths PAUL R BARFORD (Jan 18)
- Re: Long hops on international paths Nick Hilliard (Jan 17)
- Re: Long hops on international paths Mark Tinka (Jan 18)
- Re: Long hops on international paths Mike Hammett (Jan 18)
- Re: Long hops on international paths Lady Benjamin Cannon of Glencoe, ASCE (Jan 17)
- Re: Long hops on international paths PAUL R BARFORD (Jan 17)
- Re: Long hops on international paths Christopher Morrow (Jan 17)
- Re: Long hops on international paths PAUL R BARFORD (Jan 17)