SAN switch portshow

[sirfire]

Also after you run diags on the port and its clear something is wrong.

HP has recommended that with Brocade switches you should always connect your tape libraries on ports 0-3 quads or 0-7 octets and your hosts on a different octet or quad group. This loads balances the switch better.

Same could be said about Arrays and ISL links.

[Sivakumar MJ._1]

Check the GBIC, FC Cabling and SFP. Its one option to check the HBA Card in the host side...

[Tux_1]

chk the errors from command "fwportdetailshow"
this will clearly show's the errors details..
either its Port or SFP errors.
Possibilities.. most of the time.. u end up with Bad FC, bad SFP or bad HBA