On Mon, Nov 28, 2022 at 9:47 PM L A Walsh <suse@tlinx.org> wrote:
I use a 9k mtu on my 10gb network @ home -- only exists between my desktop & my server where it can be worthwhile.
Bridged to that NW is a 1gb, 1.5k mtu network use for my home IOT (Internet of Things) This works for administrative traffic, for the most part, but in gaining some new 'things', some wish to talk to a media/file server on the higher BW net.
Someone referred me to possibly using tcp mss clamping, though they were using it in the context of a VPN tunnel which I'm not using.
I'm wondering if it is as simple as installing routes with mtu clamping so hosts wanting(needing) to goto a smaller mtu would take the appropriate network and talk with smaller packets. Seems there maybe something missing there since some traffic can be ip-level w/no tcp in play (ex: dns). Doesn't seem that would really work too well...
Has anyone had any experience w/this type of setup?
tnx!
This is not the right place to post this, neither you state an actual, concrete issue with the facts of the matter. Unless you see many icmp errors there is nothing to fix or try. unless your 10g equipment is broken or wrongly configured, routers will fragment the packets accordingly and business will continue as usual.