On Fri, 2 Jul 2010, Brian Haley wrote: > On 07/01/2010 11:22 PM, Charlie Brady wrote: > >> "Filtered packets are dropped by the hardware when they don't match the > >> L2 perfect match filters, mcast hash filters and broadcast filter. > >> These filters are programmed based on the NIC's MAC address, multicast > >> list from the stack and broadcast is always enabled." > >> > >> Under normal operation I believe the counter will go up... > > > > What would cause it to go up in normal operation? > > I think it's going to depend on your switch, I have a p-t-p connection that > shows zero, but one to a switch showing 20K, so I'd assume it's periodically > going into flood mode when systems go up/down, etc. OK, thanks. > >> Are you seeing any particular type of packets being dropped? For example, > >> can you send/receive both IPv4 and IPv6 "pings" on that NIC? > > > > I don't know what is being dropped. I do know that cluster heartbeat > > traffic between the two nodes sometimes stops, leading to cluster failover > > and fencing. I don't know what is causing the traffic stalls, but NIC > > driver issues is high on the suspicion list. Platform is CentOS 5, not > > fully updates - kernel is 2.6.18-128.1.6.el5. > > There have been a number of updates to the driver since then... Yeah, I know. I have inertia to overcome to get an update in. It will help if I can find another problem report which matches the symptoms. --- Charlie -- To unsubscribe from this list: send the line "unsubscribe linux-net" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html