Cisco Systems SG50028PK9NA Default Settings and Configuration, Before You Start, Common UDLD Tasks

Port Management: Unidirectional Link Detection
Default Settings and Configuration
Cisco Small Business 200, 300 and 500 Series Managed Switch Administration Guide (Internal Version) 151
10
•UDLD and Layer 2 Protocols
UDLD runs on a port independently from other Layer 2 protocols running on
the same port, such as STP or LACP. For example, UDLD assigns the port a
status regardless of the STP status of the port or regardless of whether the
port belongs to a LAG or not.
Default Settings and Configuration
The foll owing de faults exist for this fea ture:
•UDLD is disabled by default on all ports of the device.
•Default message time is 15 seconds.
•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 Port Management > UDLD Global Settings page.
a. Enter the Message Time.
b. Select either Disabled, Normal or Aggressive as the global UDLD status.