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 On Tue, Nov 29, 2016 at 9:47 AM, Mikael Abrahamsson <swmike@swm.pp.se> wrote:
On Tue, 29 Nov 2016, TJ Trout wrote:
Could this be MTU? I've tried flow control, hard code duplex, stp on/off
etc
As others have pointed out, you probably have a switch with small buffers.
If you also have flow control and you have something that triggers flow control to turn off packet forwarding, your small-buffer-switch might fill up all (shared) buffers on that port and now you're dropping traffic to all ports.
So trying to find if you have something where flow control is enabled and is being triggered might be something worthwhile to do, and also perhaps just turn off flow control on all ports to make sure.
-- Mikael Abrahamsson email: swmike@swm.pp.se