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Introduction
This document provides DLDP configuration examples.
The Device Link Detection Protocol (DLDP) was developed by H3C to detect the status of fiber
links or twisted-pair links. When DLDP detects unidirectional links, it can automatically shut down
the faulty port to avoid network problems. Alternatively, a user can manually shut down the faulty
port.
Prerequisites
The configuration examples in this document were created and verified in a lab environment, and
all the devices were started with the factory default configuration. When you are working on a live
network, make sure you understand the potential impact of every command on your network.
This document assumes that you have basic knowledge of DLDP.
Example: Automatically shutting down
unidirectional links
Network requirements
As shown in
, Device A and Device B are connected through two fiber pairs.
Configure DLDP on the devices so each device performs the following tasks:
•
Detects unidirectional links caused by cross-connected fibers or a disconnected fiber.
•
Automatically shuts down the faulty interface when detecting a unidirectional link.
•
Automatically brings up the interface after the administrator clears the fault.
Figure 1 Network diagram
Software version used
This configuration example was created and verified on S6300-CMW710-R2310..
Configuration restrictions and guidelines
When you configure DLDP, follow these restrictions and guidelines:
•
For DLDP to operate correctly, configure the full duplex mode for the interfaces at the two ends of
the link, and configure the same speed for the two interfaces.
