On loop-free networks, STP is still configured to prevent potential loops caused by misconnections. However, STP will send TC BPDUs to instruct devices to delete MAC address entries when the network topology encounters any changes. For example, the local device's interface goes Up from Down. ...
cat#show interface | include L2|line|broadcastVlan1 is up, line protocol is up L2 Switched: ucast: 653704527 pkt, 124614363025 bytes - mcast: 23036247 pkt, 1748707536 bytes Received 23201637 broadcasts, 0 runts, 0 giants, 0 throttlesVlan10 is up, line protocol is up L2 Switched: ucast: ...
Why Cannot Information About an STP Instance with a Non-Zero ID Be Displayed After the Instance Is Configured?The device supports MSTP, which is compatible with STP and RSTP. An instance with a non-zero ID takes effect only in MSTP...
If the current traffic level is excessive or if the baseline level is not known, check whether the peak level has been achieved recently and whether it is close to the current traffic level. For example, if the peak traffic level is 15 percent and it was reached just two minutes ago and...
Mode Interface Configuration Defaults By default, the port is not configured as layer two gateway port. Example SEFOS(config-if)# spanning-tree layer2-gateway-port Notes The BPDU transmit status of the port must be disabled before configuring the port as layer two gateway port. ...
PortAdminEdge mode might cause loops if it is not used with the BPDU guard feature.It is common for edge ports to be configured as access ports for a simple end host; however, this is not mandatory. In the data center, edge ports typically connect to servers, which might ...
If the port is blocked due to other causes but not the protection function, run the display version command to check the device model and version number. Check whether the bpdu enable command needs to be configured. <HUAWEI>display version Huawei Versatile Routin...
When connecting a VLAN-aware bridge to a proprietary PVST+ switch using RSTP mode, you must allow VLAN 1 on all 802.1Q trunks that interconnect them, regardless of the configured native VLAN. Only VLAN 1 enables the switches to address the BPDU frames to the IEEE multicast MA...
BPDU protection: This function is configured on edge ports. When an edge port receives a BPDU, the edge port is set to error-down state and retains its attributes. This prevents the network topology from being changed and service traffic from being interrupted because the edge port receives BPD...
Now it looks like that A is missing some of stp hellos coming through B, and opens both links, which are not fully configured as a LAG... and when the B receives back a bpdu it has sent to A, the only solutions if to take down the link as a redudant path (i.e. your channel...