Brocade Fabric OS Administrator's Guide - Supporting Fabric OS v7.0.1 (53-1002446-01, March 2012)

Fabric OS Administrator’s Guide xix
53-1002446-01
Supported platforms for trunking. . . . . . . . . . . . . . . . . . . . . . . . . . .436
Recommendations for trunking groups. . . . . . . . . . . . . . . . . . . . . .437
Configuring trunk groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .437
Enabling trunking on a port or switch . . . . . . . . . . . . . . . . . . . . . . .438
Disabling trunking on a port or switch. . . . . . . . . . . . . . . . . . . . . . .438
Displaying trunking information . . . . . . . . . . . . . . . . . . . . . . . . . . . .439
ISL trunking over long distance fabrics . . . . . . . . . . . . . . . . . . . . . .440
EX_Port trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .440
Masterless EX_Port trunking. . . . . . . . . . . . . . . . . . . . . . . . . . .441
Supported configurations and platforms for EX_Port trunking441
Configuring EX_Port trunking . . . . . . . . . . . . . . . . . . . . . . . . . .442
Displaying EX_Port trunking information . . . . . . . . . . . . . . . . .442
F_Port trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .442
F_Port trunking for Access Gateway . . . . . . . . . . . . . . . . . . . . .443
Requirements for F_Port trunking on an Access Gateway . . .444
F_Port trunking for Brocade adapters . . . . . . . . . . . . . . . . . . .444
F_Port trunking considerations. . . . . . . . . . . . . . . . . . . . . . . . .444
Trunk Area and Admin Domains . . . . . . . . . . . . . . . . . . . . . . . .446
F_Port trunking in Virtual Fabrics . . . . . . . . . . . . . . . . . . . . . . .447
Configuring F_Port trunking for Access Gateway . . . . . . . . . . . . . .447
Configuring F_Port trunking for Brocade adapters . . . . . . . . . . . . .448
Displaying F_Port trunking information . . . . . . . . . . . . . . . . . . . . . .448
Disabling F_Port trunking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .449
Enabling the DCC policy on a trunk area. . . . . . . . . . . . . . . . . . . . .449
Chapter 23 Managing Long Distance Fabrics
In this chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .451
Long distance fabrics overview . . . . . . . . . . . . . . . . . . . . . . . . . . . .451
Extended Fabrics device limitations . . . . . . . . . . . . . . . . . . . . . . . .452
Long distance link modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .452
Configuring an extended ISL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .453
Enabling long distance when connecting to TDM devices . . .454
Buffer credit management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .455
Buffer-to-buffer flow control . . . . . . . . . . . . . . . . . . . . . . . . . . .455
Optimal buffer credit allocation . . . . . . . . . . . . . . . . . . . . . . . .456
Fibre Channel gigabit values reference definition. . . . . . . . . .457
Allocating buffer credits based on full-size frames . . . . . . . . .457
Allocating buffer credits based on average-size frames . . . . .459
Allocating buffer credits for F_Ports . . . . . . . . . . . . . . . . . . . . .460
Displaying the remaining buffers in a port group . . . . . . . . . .460
Buffer credits for each switch model . . . . . . . . . . . . . . . . . . . .461
Maximum configurable distances for Extended Fabrics . . . . .462
Buffer credit recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .463