HP Fabric OS 7.1.0, Administrator'S Manual

Page: 22 / 666

22 Fabric OS Administrator’s Guide
53-1002745-02
Buffer credit management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .555
Buffer-to-buffer flow control . . . . . . . . . . . . . . . . . . . . . . . . . . .555
Optimal buffer credit allocation . . . . . . . . . . . . . . . . . . . . . . . .556
Fibre Channel gigabit values reference definition. . . . . . . . . .557
Buffer credit allocation based on full-size frames. . . . . . . . . .557
Allocating buffer credits based on average-size frames . . . . .560
Configuring buffers for a single port directly . . . . . . . . . . . . . .561
Configuring buffers using frame size . . . . . . . . . . . . . . . . . . . .561
Calculating the number of buffers required given the
distance, speed, and frame size. . . . . . . . . . . . . . . . . . . . . . . .561
Allocating buffer credits for F_Ports . . . . . . . . . . . . . . . . . . . . .562
Monitoring buffers in a port group . . . . . . . . . . . . . . . . . . . . . .562
Buffer credits switch or blade model . . . . . . . . . . . . . . . . . . . .563
Maximum configurable distances for Extended Fabrics . . . . .564
Downgrade considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . .565
Buffer credit recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .566
Buffer credit recovery over an E_Port. . . . . . . . . . . . . . . . . . . .566
Buffer credit recovery over an F_Port. . . . . . . . . . . . . . . . . . . .566
Buffer credit recovery over an EX_Port. . . . . . . . . . . . . . . . . . .567
Enabling and disabling buffer credit recovery . . . . . . . . . . . . .567
Forward error correction on long-distance links . . . . . . . . . . . . . . .568
Enabling FEC on a long-distance link . . . . . . . . . . . . . . . . . . . .568
Disabling FEC on a long-distance link . . . . . . . . . . . . . . . . . . .568
Chapter 24 Using FC-FC Routing to Connect Fabrics
FC-FC routing overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .569
License requirements for FC-FC routing. . . . . . . . . . . . . . . . . .570
Supported platforms for FC-FC routing. . . . . . . . . . . . . . . . . . .570
Supported configurations for FC-FC routing. . . . . . . . . . . . . . . 571
Network OS connectivity limitations . . . . . . . . . . . . . . . . . . . . . 571
Fibre Channel routing concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . .572
Proxy devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .575
FC-FC routing topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 576
Phantom domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .577
FCR authentication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .579
Setting up FC-FC routing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .579
Verifying the setup for FC-FC routing . . . . . . . . . . . . . . . . . . . .580
Backbone fabric IDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .581
Assigning backbone fabric IDs . . . . . . . . . . . . . . . . . . . . . . . . .582
FCIP tunnel configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .582
Inter-fabric link configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .583
Configuring an IFL for both edge and backbone connections 583
FC router port cost configuration . . . . . . . . . . . . . . . . . . . . . . . . . . .587
Port cost considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .588
Setting router port cost for an EX_Port. . . . . . . . . . . . . . . . . . .588
EX_Port frame trunking configuration . . . . . . . . . . . . . . . . . . . . . . .589