Solved: 2821 with HWIC-1GE-SFP - Flow control

gacunt1964 · ‎11-29-2007

Scenerio:-

A 2821 with HWIC-1GE-SFP module(G0/1).

A 3560(WS-C3560G-48TS-E) with (SFP) fibre between the two devices.

On the 3560 (G0/49)receiving lots of "pause frames".

On the 2821 lots of "pause outputs" on the Gig0/1 interface.

No other errors on either device, input/output,crc etc..all clean.

Flow control is now manually set on the 2960 (flowcontrol receive on).

My question is over the G0/1 interface on the 2821. How do you configure flow control on the receive.?

Thanks

Edison Ortiz · ‎12-02-2007

That command is only available in switches:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/12240se/cr/cli1.htm#wp2233510

View solution in original post

Edison Ortiz · ‎12-03-2007

The pause frame packets from the switch will be ignored by the router interface.

If you want to implement flow control between two devices, you need a switch-to-switch connectivity.

View solution in original post

Edison Ortiz · ‎12-02-2007

That command is only available in switches:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3560/12240se/cr/cli1.htm#wp2233510

gacunt1964 · ‎12-03-2007

Edison,

Thanks for the information.

So there is "no way" to control "flow control" from the 2821 Gigabit port?

So reading between the lines. The result of a 2821 (HWIC-1GE-SFP) Gigabit interface connected to 3560 Gigabit interface "can" result in "pause frames".

The question remains is there a solution ?

Thanks in advance

Greg

Edison Ortiz · ‎12-03-2007

The pause frame packets from the switch will be ignored by the router interface.

If you want to implement flow control between two devices, you need a switch-to-switch connectivity.

gacunt1964 · ‎12-03-2007

Thank you very much for the information. This clarified what we thought.

Greg