Loop prevention mechanisms on CE series switches at the edge of a TRILL network

Currently, you can perform the following operations to detect and eliminate loops when user-side devices connect to a TRILL network:
1. Configure the assured forwarding (AF) function on the edge device of the TRILL network so that only one device forwards user traffic, preventing loops.
2. In V100R003C00 and later versions, configure association between TRILL and MSTP when an MSTP network connects to a TRILL network.
3. In V100R003C00 and V100R003C10, configure an E-Trunk to enable dual-homing access to TRILL for active-active access if user-side devices are servers or network devices are dual-homed to the TRILL network.
4. In V100R005C00 and later versions, configure a multi-chassis link aggregation group (M-LAG) to enable dual-homing access to TRILL for active-active access if user-side devices are servers or network devices are dual-homed to the TRILL network.

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