Port Management
UDLD
159 Cisco Sx350, SG350X, SG350XG, Sx550X & SG550XG Series Managed Switches, Firmware Release 2.2.5.x
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• Default expiration time is 45 seconds (3 times the message time).
• Default port UDLD state:
- Fiber interfaces are in the global UDLD state.
- Non-fiber interfaces are in the disable state.
Before You Start
No preliminary tasks are required.
Common UDLD Tasks
This section describes some common tasks to setup UDLD.
Workflow1:
To globally enable UDLD on fiber ports, perform the following steps:
STEP 1 Open the UDLD Global Settings page.
a. Enter the Message Time.
b. In the Fiber Port UDLD Default State field, enter either Disabled, Normal or Aggressive
as the global UDLD status.
STEP 2 Click Apply.
Workflow2:
To change the UDLD configuration of a fiber port or to enable UDLD on
a copper port, perform the following steps:
STEP 1 Open the UDLD Global Settings page.
a. Select a port.
b. Select either Default, Disabled, Normal or Aggressive as the port’s UDLD status. If you
select Default, the port receives the global setting.
STEP 2 Click Apply.
Workflow3:
To bring a port up after it was shut down by UDLD and automatic
reactivation was not configured:
STEP 1 Open the Error Recovery Settings page.
a. Select a port.
b. Click Reactivate.
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