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Summary of M-LAG Configuration Tasks
You can perform the following M-LAG configurations according to the actual networking.
Table 4-5 M-LAG configuration tasks
Mode |
Description |
Task |
Configuration Notes |
|---|---|---|---|
Root bridge |
When the root bridge mode is used to configure M-LAG, the M-LAG master and backup devices must be used as root bridges and configured with the same bridge ID on the STP network so that the two devices are simulated into one root bridge. The M-LAG master and backup devices are not affected by the network topology change on the Layer 2 network. |
|
|
V-STP (recommended) |
V-STP virtualizes the M-LAG master and backup devices enabled with STP into one device to perform STP calculation. |
|
You must enable STP on the peer-link interface and configure global V-STP. |
- When the root bridge mode is used, two devices that constitute an M-LAG must function as root bridges on a Layer 2 network and do not support M-LAG cascading in the root bridge mode.
- When the V-STP mode is used, two devices that constitute an M-LAG can choose not to function as root bridges on a Layer 2 network. The networking is flexible and the two devices support M-LAG cascading. V-STP is recommended because it can eliminate loops caused by incorrect M-LAG configurations or connections.