Application Example For Mstp Function - TP-Link T3700G-28TQ User Manual

Root Protect:
TC Protect:
BPDU Protect:
BPDU Filter:
BPDU Flood
LAG:

8.5 Application Example for MSTP Function

Network Requirements

Switch A, B, C, D and E all support MSTP function.

A is the central switch.

B and C are switches in the convergence layer. D, E and F are switches in the access layer.

There are 6 VLANs labeled as VLAN101-VLAN106 in the network.

All switches run MSTP and belong to the same MST region.

The data in VLAN101, 103 and 105 are transmitted in Instance 1 with B as the root bridge.

The data in VLAN102, 104 and 106 are transmitted in Instance 2 with C as the root bridge.
Enable or disable the Root Protect function. It is recommended to
enable this function on the designated ports of the root bridge.
Root Protect function is used to ensure that the desired root bridge
will not lose its position. With root protect function enabled, the port
will temporarily transit to blocking state when it receives
higher-priority BDPUs. After two times of forward delay, if the port
does not receive any higher-priority BDPUs, it will transit to its
normal state.
Enable or disable the TC Protect function. It is It is recommended to
enable this function on the ports of non-root switches.
TC Protect function is used to prevent the switch from frequently
removing MAC address entries. With TC protect function enabled,
the switch will drop TC-BPDUs.
Enable or disable the BPDU Protect function. It is It is recommended
to enable this function on edge ports.
BPDU Protect function is used to prevent the edge port from
receiving BPUDs. With BPDU protect function enabled, the edge
port will be shut down when it receives BPDUs, and reports these
cases to the administrator. Only the administrator can restore it.
Enable or disable the BPDU Filter function. It is It is recommended to
enable this function on edge ports.
BPDU filter function is to prevent BPDU flooding in the network. With
BPDU filter function enabled, the port does not receive or forward
BPDUs, but it sends out its own BPDUs, preventing the switch from
being attacked by BPDUs.
Enable or disable the BPDU Flood function.
With BPDU flood function enabled, the port can only forward BPDUs
to other
BPDU-flood-enabled ports
Displays the LAG which the port belongs to.
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