UDLD Interface Configuration
Use the UDLD
Interface Configuration page to configure the per-port UDLD settings.
To access this page,
click in the navigation menu.
Use the buttons to perform the following tasks:
- To configure UDLD settings for one or more interfaces, select each interface to configure and click Edit. The same settings are applied to all selected interfaces.
- To reset all UDLD
ports that have a UDLD Status of Shutdown, click UDLD Port
Reset. If the global and interface UDLD administrative mode is enabled
and the port link is up, the port restarts the exchange of UDLD messages with its link
partner. The UDLD port status is Shutdown if UDLD has detected an unidirectional link
and has put the port in a disabled state.
UDLD
Interface Configuration Fields
| Field |
Description |
| Interface |
The interface associated with the rest of the data in
the row. In the Edit UDLD Interface Configuration window, this field identifies
each interface that is being configured. |
| Admin Mode |
The administrative mode of UDLD on the port. |
| UDLD Mode |
The UDLD mode for the port, which is one of the
following:
- Normal: The state of the port is classified as
Undetermined if an anomaly exists. An anomaly might be the absence of its
own information in received UDLD messages or the failure to receive UDLD
messages. An Undetermined state has no effect on the operation of the
port. The port is not disabled and continues operating. When operating in
UDLD normal mode, a port will be put into a disabled (Shutdown) state
only in the following situations:
- The UDLD PDU received from a partner does not
have its own details (echo).
- When there is a loopback, and information sent
out on a port is received back exactly as it was sent.
- Aggressive: The port is put into a disabled
state for the same reasons that it occurs in normal mode. Additionally, a
port in UDLD aggressive mode can be disabled if the port does not receive
any UDLD echo packets even after bidirectional connection was
established. If a bidirectional link is established, and packets suddenly
stop coming from partner device, the UDLD aggressive-mode port assumes
that link has become unidirectional.
|
| UDLD Status |
The UDLD status on the port, which is one of the
following:
- Not Applicable: The administrative status of
UDLD is globally disabled or disabled on the interface.
- Bidirectional: UDLD has detected a
bidirectional link.
- Shutdown: UDLD has detected a unidirectional
link, and the port is in a disabled state. To clear the disabled state,
click UDLD Port Reset.
- Undetermined: UDLD has not collected enough
information to determine the state of the port.
- Unknown: The port link has physically gone
down, but it is not because it was put in a disabled state by the UDLD
feature.
|
Click Refreshto display the latest information from the router.
If you change any information on the page, click Submit to apply the changes to the system.
Print
this page
Email this topic
Feedback
View PDF
Download EPUB