Administrators Guide (Supporting Fabric OS v7.3.0) Manual
Configuring dynamic load sharing
The exchange-based routing policy depends on the Fabric OS Dynamic Load Sharing feature (DLS)
feature for dynamic routing path selection. When this policy is in force, DLS is always enabled and
cannot be disabled.
When the port-based policy is in force, you can enable DLS to optimize routing. When DLS is enabled,
it shares traffic among multiple equivalent paths between switches. DLS recomputes load sharing either
when a switch boots up or each time an E_Port or FX_Port goes online or offline. Enabling this feature
allows a path to be discovered automatically by the FSPF path-selection protocol.
For more information regarding DLS, refer to the dlsset command in the Fabric OS Command
Reference.
To configure dynamic load sharing, perform the following steps.
1. Open the Switch Administration window as described in Opening the Switch Administration window
on page 52.
2. Select the Routing tab.
3. Select On in the Dynamic Load Sharing (DLS) area to enable dynamic load sharing or select Off to
disable dynamic load sharing.
When the exchange-based routing policy is in effect, the DLS radio buttons display on the Routing
tab
4. Click Apply.
The warning message, "Credit Recovery for Long distance links should be turned off using CLI while
enabling DLS" displays.
5. Click OK.
Lossless dynamic load sharing
Lossless dynamic load sharing (DLS) is supported in following platforms:
• Brocade 300
• Brocade 5100
• Brocade 5300
• Brocade 6505
• Brocade 6510
• Brocade 6520
• Brocade 7800 on FC ports
• Brocade 7840 on FC ports
• Brocade DCX 8510-4 Backbone
• Brocade DCX 8510-8 Backbone
• Brocade DCX Backbone
• Brocade DCX-4S Backbone
NOTE
For the Brocade FX8-24 Extension blade, lossless feature is supported only on FC ports.
You can enable this lossless feature from Web Tools. If you try to enable lossless when DLS is off, an
error message displays.
To enable or disable lossless DLS, perform the following steps.
Configuring dynamic load sharing
Web Tools Administrator's Guide 193
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