# Configure the common quick transition mechanism for the interface that is connected to a non-Huawei device. System View [~HUAWEI] Interface 10ge 1/0/1 [~HUAWEI-10GE1/0/1] stp no-agreement-check By running the stp no-agreement-check command, a common quick transition mechanism is configured 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 advanced-mode S-series fast switches by default. You must run the stp no-agreement-check command to configure general mode fast transition on interfaces that do not support fast transition to advanced mode. After running the stp mode mstp command on a switching device, all ports on which MSTP is running on the switch device, except for ports directly connected to STP switching devices, operate in MSTP mode and can send MSTP BPDUs. Ports directly connected to STP switching devices operate in STP mode…. To allow Huawei Datacom devices to communicate with non-Huawei devices, a rapid transition mechanism must be configured on Huawei devices, based on the proposal/agreement mechanism for non-Huawei devices.

. After running the stp transmit-limit command, packet-number controls the maximum number of BPDUs that each interface can send per second. Mode of convergence of the spanning Tree protocol (SPT) which can be fast or normal. For more information, see stp converges. A switching device in a clamping shaft cannot serve as both a primary root bridge and a secondary root bridge…. The number of hops remaining in a BPDU sent by the root switching device is the maximum number of hops…. VBST checks whether the PVID of two directly connected ports are identical. If they are different, the method of treatment varies as follows:. . .

In a clamping shaft, the device, closer to the root bridge, is the device 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 while negotiating. If 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 perform the following operations 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 correctly selected. The root port is a port that generates the lowest cost of path to the root bridge. To be precise, the root port is determined based on the cost of the path. Among all STP-enabled ports on a network bridge, the port with the lowest root path cost is the root port.

There is only one root port on an STP-enabled device, but there is no root port on the root bridge. . In each spanning structure, select a specific port for each connection based on the bridge ID, path cost, and port IDs. The lower the numeric value, the more likely it is that the port of a device will become a particular port. The higher the numeric value, the more likely the port is to be blocked. VBST передат VBST BPDU на VLAN, но не VLAN 1, чтобы определить топологию сети. VBST-BPDUs are VBST protocol packages based on BPPU STP or RSTP….