Without more detail, I'm grasping at straws here, but see this recent thread about QoS and microbursts on the juniper-nsp list:
https://puck.nether.net/pipermail/juniper-nsp/2016-November/033692.html Do you have ports with different speeds connected? Another idea: Are you using Spanning Tree Protocol and seeing lots of TCNs? On Tue, Nov 29, 2016 at 01:06:00AM -0800, TJ Trout wrote: > I recently upgraded my core network from 1G to 10G and after the upgrade I > have noticed that my 10G switch during peak traffic (1500mbps, 100,000pps) > seems to be dropping traffic for a split second across all ports and all > vlans. I immediately replaced the switch with a different brand/model and > the problem persists. > > Sometimes traffic drops to zero, others it drops to 50%, problem is very > random but seems to occur with much more frequency during high PPS (pushing > high traffic / iperf does not induce problem) > > Could this be MTU? I've tried flow control, hard code duplex, stp on/off etc > > I'm at a loss any ideas? > > TJ Trout > Volt Broadband
