Hi, What is the general recommendation regarding enabling flow control on Ethernet interfaces. Is it a legacy issue when devices had smaller buffers, or is it still required for specific applications? We are having issues with an Enterprise NAS solution where servers using it for storage are claiming to be losing connectivity. The NAS is connected to the switch fabric (a pair of Catalyst 6509s) by two 2*10GE port-channels (10GBase-SR optics); receive flow control is enabled on the switch side "flowcontrol receive on", but no input or output pause frames are being received/sent according to the member interface statistics.
The vendor is now suggesting that flowcontrol needs to be enabled end-to-end - e.g. on aggregation switches downstream from the Catalyst 6509s towards the servers and on the hosts. However, the utilisation on the NAS port-channels is only ~400Mbps. Does enabling flowcontrol make sense here? Cheers, Matt -- Matthew Melbourne _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
