I plan on disabling FC on everything tonight, I've done that before but I want to be sure.
Anything that can be done about the 2 x 1G peers trunking to the 10G router transition that can be fixed? should I be rate limiting the vlan for the peers at 1G so the 10G router isn't trying to send more than 1G? On Tue, Nov 29, 2016 at 1:47 PM, Michael Loftis <[email protected]> wrote: > Yes it is absolutely possible to overrun the buffers. Any kind of > backpressure (FC) from hosts, or 10G->1G transitions can easily cause > it. Even if in a 10s window you're not over 1G if the 10G sender > attempts to back to back too many frames in a row (Like say sendfile() > API type calls) BOOM, dropping frames in the switch. > > On Tue, Nov 29, 2016 at 1:28 PM, TJ Trout <[email protected]> wrote: > > Luke; > > > > All l2, no l3. only 4 vlans. 2 peers trunked to a router which trunks > back > > to 2 devices (microwave backhauls). > > > > Chuck; > > > > All ports are 10g except the 2 peers are 1g and trunk back to a 10g port > > for the router wan > > > > No TCN's > > > > Brian; > > > > I have tried a IBM G8124 and a Ubiquiti ES-16-XG both show same exact > drops > > across all ports, makes me think it's a config issue. MTU, FC, something. > > > > Andrew; > > > > I have tried with FC disabled, but I will try that one more time. > > > > Mikael; > > > > Is it possible to over run the buffers of a 320gbps backplane switch with > > only 1.5gbps traffic? I think the switch is rated for 140m PPS and I'm > only > > pushing 100k PPS >
