nanog mailing list archives
Re: Stupid Question maybe?
From: Saku Ytti <saku () ytti fi>
Date: Thu, 20 Dec 2018 20:15:45 +0200
On Thu, 20 Dec 2018 at 20:07, William Allen Simpson <william.allen.simpson () gmail com> wrote:
Then there were the fine vendors that conflated the link and IP headers. That fell apart when IEEE started assigning OUIs that began with 0x4xxxxxxx.
There is no way to know in-transit what MPLS carries. Vendors have implemented heuristics of different complexities to try to guess what is being carried in effort to enable services like ECMP and netflow. In hindsight MPLS ethertype probably should tell what it carries MPLS-IP, MPLS-ETH, MPLS-OTHER. This is on-going problem with no obvious solution, the ECMP issue can be largely handled by disabling payload guessing and relying on having sufficient flow entropy in labels. But the services such as netflow still need transit guessing. -- ++ytti
Current thread:
- Re: Stupid Question maybe?, (continued)
- Re: Stupid Question maybe? valdis . kletnieks (Dec 19)
- Re: Stupid Question maybe? Thomas Bellman (Dec 19)
- Re: Stupid Question maybe? William Herrin (Dec 19)
- Re: Stupid Question maybe? Thomas Bellman (Dec 19)
- Re: Stupid Question maybe? Owen DeLong (Dec 19)
- RE: Stupid Question maybe? David Edelman (Dec 19)
- Re: Stupid Question maybe? Baldur Norddahl (Dec 19)
- Re: Stupid Question maybe? Joe (Dec 19)
- Re: Stupid Question maybe? valdis . kletnieks (Dec 19)
- Re: Stupid Question maybe? William Allen Simpson (Dec 20)
- Re: Stupid Question maybe? Saku Ytti (Dec 20)
- Re: Stupid Question maybe? Joel Halpern (Dec 20)
- Re: Stupid Question maybe? Tony Finch (Dec 24)
- Re: Stupid Question maybe? Chuck Church (Dec 26)
- Re: Stupid Question maybe? Baldur Norddahl (Dec 18)
- RE: Stupid Question maybe? Naslund, Steve (Dec 18)
- Re: Stupid Question maybe? William Herrin (Dec 18)
- RE: Stupid Question maybe? Naslund, Steve (Dec 18)
- Re: Stupid Question maybe? Florian Weimer (Dec 21)
- Re: Stupid Question maybe? Fred Baker (Dec 18)
- Re: Stupid Question maybe? William Allen Simpson (Dec 19)