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HP A7533A - Brocade 4Gb SAN Switch Base Administrator's Manual: Upgrade, Downgrade, And Ha Considerations For Router Port Cost; Setting Router Port Cost For An Ex_port; Ex_port Frame Trunking Configuration

Hp storageworks fabric os 6.2 administrator guide (5697-0016, may 2009).
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Upgrade, downgrade, and HA considerations for router port cost

For HA, the router port cost is synchronized to the standby CP.
Legacy routers in the backbone fabric program all the router ports without considering router port cost.
Fabric OS 5.2.0 or later considers legacy router port cost as 1000 for both EX or VEX_Ports.

Setting router port cost for an EX_Port

The router port cost value for an EX_Port is set automatically when the EX_Port is created. However, you can
modify the cost for that port. You can configure the EX_ or VEX_Port with values of either 1,000 or 10,000.
If you want to differentiate between two EX_Port links with different speeds, you can assign 1,000 to one
link and 10,000 to the other link.
For details about the use of any of the following commands, see the Fabric OS Command Reference.
1.
Enter the portDisable command to disable any port on which you want to set the router port cost.
switch:admin> portdisable 7/10
2.
Enable EX_Port or VEX_Port mode with the portCfgEXPort or portCfgVEXPort command.
switch:admin> portcfgexport 7/10 -a 1
3.
Enter the fcrRouterPortCost command to display the router port cost for each EX_Port.
switch:admin> fcrrouterportcost
Port
------------------------
7/3
7/4
7/9
7/10
7/13
10/0
You can also use the fcrRouteShow command to display the router port cost.
4.
Enter the fcrRouterPortCost command with a port and slot number, to display the router port cost
for a single EX_Port.
switch:admin> fcrrouterportcost 7/10
Port
------------------------
7/10
5.
Enter the appropriate form of the fcrRouterPortCost command based on the task you want to
perform:
• To set the router port cost for a single EX_Port, enter the command with a port and slot number and
a specific cost:
switch:admin> fcrrouterportcost 7/10 10000
• To set the cost of the EX_Port back to the default, enter a cost value of 0:
switch:admin> fcrrouterportcost 7/10 0
6.
Enter the portEnable command to enable the ports that you disabled in
switch:admin> portenable 7/10

EX_Port frame trunking configuration

In Fabric OS 5.2.0 and later, you can configure EX_Ports to use frame-based trunking just as you do
regular E_Ports. EX_Port frame trunking support is designed to provide the best utilization and balance of
frames transmitted on each link between the FC router and the edge fabric. You should trunk all ports
connected to the same edge fabrics.
384 Using the FC-FC routing service
Cost
1000
1000
1000
1000
1000
1000
Cost
1000
step
1.

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