Configuring Link Cost - Brocade Communications Systems A7990A - StorageWorks SAN Director 4/16 Blade Switch Administrator's Manual
Brocade web tools administrator's guide (53-0000194-01, november 2006)
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To configure the IOD setting
1.
Launch the Switch Admin module as described on
2.
Click the Routing tab.
3.
Click On in the In-Order Delivery area to force in-order frame delivery across topology changes or
click Off to restore out-of-order frame delivery across topology changes.
4.
Click Apply.
Configuring Link Cost
This section describes how to set the cost of an interswitch link (ISL). The cost of a link is a
dimensionless positive number. The fabric shortest path first (FSPF) protocol compares the cost of
various paths between a source switch and a destination switch by adding the costs of all the ISLs along
each path. FSPF chooses the path with minimum cost. If multiple paths exist with the same minimum
cost, FSPF employs load sharing over these paths.
Every ISL has a default cost that is inversely proportional to its bandwidth. For a 1-Gbit/sec ISL, the
default cost is 1000. For a 2-Gbit/sec ISL, the default cost is 500.
Use this procedure to set a non-default, "static" cost for any port.
When you configure link cost for a SilkWorm 24000 or 48000 configured for two logical switches, it is
on a logical-switch basis. This means that for each logical switch, you configure link cost individually.
To configure the link cost for a port
1.
Launch the Switch Admin module as described on
2.
Click the Routing tab.
3.
This step is switch-specific:
For SilkWorm 24000 and 48000 directors, click the slot number of the logical switch under Link
Cost in the navigation tree.
For SilkWorm 200E, 3250, 3850, 3900, 4100, 4900, and 7500 switches, click Link Cost in the
navigation tree.
4.
Double-click in the row in the Cost column that corresponds to the appropriate port.
5.
Type the link cost.
Valid values for link cost are from 1 through 65535. Setting the value to 0 sets the link cost to the
default value for that port.
6.
Click Apply.
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Web Tools Administrator's Guide
Publication Number: 53-0000194-01
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