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LDT and LBDT Configuration
This chapter describes how to configure loop detection (LDT) and loopback detection (LBDT), which allow the device to detect loopbacks on an interface, loops on the downstream network or device and loops between two device interfaces. When detecting a loop, the device notifies users in a timely manner and takes a preconfigured action on the problematic interface to minimize the impact of the loop on the device and network.
- Introduction to LBDT and LDT
- Principles
- Applicable Scenario
- Licensing Requirements and Limitations for LDT and LBDT
- Default Configuration
- Configuring LDT to Detect Loops
To detect loops in more than eight VLANs or on an Eth-Trunk, configure LDT. - Configuring Automatic LBDT
LBDT technology detects loops. To enable the switch to detect loops in the VLAN specified by the PVID or in the VLAN where MAC address flapping is detected, you can configure automatic LBDT. Then the switch can immediately detect loops on the downstream network or between two interfaces and send traps to notify users to minimize the impact of loops on the switch or the network. - Configuring Manual LBDT
- Configuration Examples