On Thu, Apr 17, 2008 at 3:46 AM, Paul Durrant <[EMAIL PROTECTED]> wrote: > > Matty wrote: > > > > > We have a couple of Nevada build 81 hosts (Sun X2200s) plugged into a > > Cisco 4948. While perusing the switch counters, we noticed that the > > RxPause column for the switch ports connected to these hosts is > > non-zero: > > > > as101#show flowcontrol > > Port Send FlowControl Receive FlowControl RxPause TxPause > > admin oper admin oper > > --------- -------- -------- -------- -------- ------- ------- > > Gi1/5 off off desired on 849066 0 > > ..... > > Gi1/11 off off desired on 1299244 0 > > > > Does anyone happen to know what conditions will lead a Solaris host to > > send RX pause messages? I have been googling and reading through > > various pieces of documentation, but nothing appears to describe the > > system or application behaviors that can lead to non-zero RxPause > > values. > > > > > > Pause messages are usually generated directly by the network adapter with > s/w usually only getting involved to set some FIFO thresholds. The > likelihood is then that whatever traffic is going to the X2200 is causing > some hardware FIFO to fill beyond some threshold and thus pause packets are > being sent back to the switch. What hardware are you interfacing to in the > X2200 (it's not a machine I'm familiar with)?
Hey Paul, The Sun X2200 server (dual core AMD server) has two built-in Broadcom 5348 adapters, and these are the adapters that are plugged into the switch ports with non-zero PauseRX values. According to nicstat, the box doesn't appear to be handling any excessive amounts of traffic, so I'm still not real certain why it would be sending pause frames back to the switch. Does anyone happen to have any ideas? Thanks, - Ryan _______________________________________________ networking-discuss mailing list [email protected]
