[Huawei-GigabitEthernet0/0/3]stp no-agreement-check # Set up the normal quick migration mode, and the default is the advanced fast migration mechanism. # Configure the general quick transition mechanism for the interface connected to a non-Huawei device. System View [~HUAWEI] Interface 10ge 1/0/1 [~HUAWEI-10GE1/0/1] stp no-agreement-check Running the stp no-agreement-check command configures a common quick transition mechanism on a port. Cisco switches use a short algorithm to calculate the cost of the path. The short algorithm corresponds to the dot1d-1998 algorithm for Huawei`s S-series switches. Cisco switches do not support fast migration to advanced mode, while Huawei`s S-series switches use S-series fast switches with advanced mode by default. You must run the stp no-agreement-check command to configure the general mode fast transition for interfaces that do not support the fast transition to advanced mode. After you run the mstp stp mode command on a switching device, all ports running MSTP on the switching device, except for ports that are directly connected to STP switching devices, operate in MSTP mode and can send MSTP BPDUs. Ports connected directly to the STP switchgear operate in STP mode.

In order for Huawei Datacom devices to communicate with non-Huawei devices, a rapid transition mechanism based on the proposal/agreement mechanism for non-Huawei devices must be configured on Huawei devices. Running the stp no-agreement-check command configures a general fast transition mechanism for a port. Use stp no-agreement-check to enable No Agreement Check for a port. Under normal circumstances, it is not recommended to set the above three time parameters directly through this configuration. Since the values of these three time parameters refer to the network scale, it is recommended that the Spanning Tree protocol automatically adjust the values of these three time parameters by adjusting the diameter of the network. If the network diameter defaults, the three time settings also assume their respective default values. If the maximum number of connections affecting the bandwidth of the Eth Trunk1 interface is set to 1, the path cost of the Eth Trunk1 interface calculated by STP is greater than the cost of the Eth Trunk2, the calculation of the spanning tree is performed again, and the Eth Trunk1 interface on device B changes the alternative port, Eth Trunk2 becomes the root port. When configuring the above three time settings, it is recommended to keep the same configuration time for devices on the same ring network. [9303-GigabitEthernet1/0/0]stp instance? INTEGER identifier for the Spanning Tree instance.

21.1. Configure the time it takes for the device to process the number of topology change packets specified by the threshold The higher the maximum number of BPDUs sent from the port in each Hello Time, the more BPDUs are sent per unit of time and the more system resources are consumed. Properly configuring this value can limit the speed at which the port sends BPDUs and prevent MSTP from consuming excessive bandwidth resources when the network topology is turbulent. . Between two switchgear interconnected in a clamping shaft, the switchgear closer to the root bridge is the upstream device of the other devices. In a clamping shaft, the device closest to the root bridge is the device connected upstream of another connected device. When a VBST-enabled switch connects to an MSTP-enabled switch, the connected port on the MSTP switch automatically switches to RSTP mode during negotiation. When the VBST-enabled switch switch switches to MSTP mode, the connected ports on both switches may continue to operate in RSTP mode due to the time sequence issue. You can do the following to manually switch ports in MSTP mode.

If the device connects to a non-Huawei device, it is recommended to run the command stp vlan -id1 [ to vlan-id2 } } & priority priority command to set the priority of the device to ensure that the root bridge is selected correctly. The root port is a port that generates the lowest cost for the root bridge path. To be precise, the root port is determined based on the cost of the path. Of all the STP-enabled ports on a network bridge, the port with the lowest root path cost is the root port. [9303] [9303] [9303] [9303]disp stp ? The short information tree instance instance specifies the configuration location of the region configuration region for the region that the Edge port does not receive and process BPDU configuration messages, does not participate in the RSTP operation, and can be transferred directly from Disable to the forward state without delay, as well as disabling MSTP on the port. . . . [5328_Server]GigabitEthernet 0/1/ stp interface? [5328_Server]stp GigabitEthernet 0/1/1 interface? GigabitEthernet GigabitEthernet interface compliance Protocol type specify config-digest-snoop Specify digest configuration Snoop cost Specify port path cost Disable Spanning Tree protocol on a port Specify Edge port Enable Spanning Tree protocol on one port Specify Spanning Tree loop protection mcheck Specify point-to-point Specify point-to-point root protection Specify root protection for the interface zone specify the number of transmission limits. The values of the Hello Time, Forward Delay, and Max Age parameters of the root switching device must follow the following formula, otherwise the network will fluctuate frequently. 2 × (delay before -1.0 seconds) >= maximum age; age > = 2 × (Hello Time + 1.0 seconds). If Huawei devices are connected to third-party devices and the domain name, revision level, and mapping table of VLAN instances are consistent, the two devices will not be able to communicate normally due to inconsistent BPDU message keys from both parties….