05-23-2012 01:50 AM
According to the FastIron configuration guide and release notes the FastIron FWS only supports asymmetric flow control, which means:
it can receive and respond to flow control packets but can NOT generate them.
We had serveral times the following case with a FWS:
Port 0/1/28 Counters:
InOctets 2473413 OutOctets 74547786
InFlowCtrlPkts 15923389 OutFlowCtrlPkts 152323
We had many many incoming Flow Control packets on one port of the FWS, but we also have seen many many OUTGOING flow control packets on many other ports of this FWS.
Port 0/1/31 Counters:
InOctets 1702725 OutOctets 11316101
InFlowCtrlPkts 4 OutFlowCtrlPkts 146342
This caused that all attached endstations have not been reachable.
But the main question is...... why is the FWS showing Outgoing flow control packets although the Brocade guides tell me that this is not supported!????
Flow control packets are destined to 0180c2000001 and are only "exchanged" between the direct attached neighbors for example PC and switch port.
Has anybody any ideas on this?
Thank you very much