Fibre Channel (SAN)

Reply
Occasional Contributor
Posts: 18
Registered: ‎02-20-2009

Port fence implementation in Backbone Routers

Hi All,

Is it possible to monitor c3 discards in E-Ports of  Router and edge switches using port fencing feature and can we disable it when threshold breached ?

For E-Port, i see only CRC, ITW, LR, PE, ST are supported for port fencing and not C3TX_TO.

Can i use Port Type - Port for this purpose which has C3TX_TO area?

Any inputs are highly appreciated.

Port Type|Area        |PF Status   |High threshold

---------|----------------|----------------|----------------

E-port   |CRC         |enabled     |100
     |ITW         |enabled     |100
     |LR          |enabled     |5
     |PE          |disabled    |5
     |ST          |disabled    |50
FOP-port |CRC         |disabled    |1000
     |ITW         |disabled    |1000
     |LR          |disabled    |500
     |C3TX_TO     |disabled    |5
     |PE          |disabled    |5
     |ST          |disabled    |50
Port |CRC         |disabled    |1000
     |ITW         |disabled    |1000
     |LR          |disabled    |500
     |C3TX_TO     |disabled    |5
     |PE          |disabled    |5
     |ST          |disabled    |50

Regards,

Arun

Valued Contributor
Posts: 761
Registered: ‎06-11-2010

Re: Port fence implementation in Backbone Routers


Hi,

Yes, you can use the E-Port C3 discards under Port type which includes EX-Ports.When the threshold is reached you use port fencing to disable the affected port. But you have to be very carefull with this feature because a slow drain device could cause Tx C3 discards on ISLs (no matter if they're e-port or ex-ports) and according to this policy it would be disabled not been the originator of the issue...

Rgds

Join the Community

Get quick and easy access to valuable resource designed to help you manage your Brocade Network.