Analyzing the configuration of a catalyst-4500 for one of my clients (switch that has some problems), I have seen a large use of the "flowcontrol" command in all modes (receive / send, on / off / desideres). I never use it, but here it is used on nearly all Giga interfaces. The question is: is it a good idea or are there any contraindications? Thanks for any suggestion. Claudio
Its like a quick form of qos it tells the sender to slow down when the int is congested , whats the issue your running into on the switch ?
Flow control is a feature defined in the IEEE 802.3x specification, enabling a receiving device to signal congestion to a sending device, which allows for the sending device to temporarily halt transmission, alleviating congestion at the receiving device
Flow control— Some Fast Ethernet devices support flow control, where devices can send pause frames, which instruct the remote end to stop sending data for a specific period of time.
Flow control— Flow control is important for gigabit Ethernet connections, where it is reasonable for the receive buffers on a gigabit interface to become full due to the high speeds of data transfer, causing congestion on the interface