What is spanning tree BPDUfilter enable?
The spanning-tree BPDUfilter works similar to BPDUGuard as it allows you to block malicious BPDUs. When you receive a BPDU on a portfast enabled interface then it will lose its portfast status, disables BPDU filtering and acts as a normal interface.
What is BPDU filtering?
The STP BPDU filter feature allows control of spanning tree participation on a per-port basis. It can be used to exclude specific ports from becoming part of spanning tree operations. A port with the BPDU filter enabled will ignore incoming BPDU packets and stay locked in the spanning tree forwarding state.
What is BPDU flooding?
BPDUs are used to transmit spanning tree information. Filtering — Filters BPDU packets when spanning tree is disabled on an interface. Flooding — Floods BPDU packets when spanning tree is disabled on an interface.
What is BPDU guard used for?
BPDU Guard feature is used to protect the Layer 2 Spanning Tree Protocol (STP) Topology from BPDU related attacks. BPDU Guard feature must be enabled on a port that should never receive a BPDU from its connected device.
Can I use BPDU filter on trunk ports?
A BPDU is a data message transmitted across a local area network to detect loops in network topologies. Guard feature can be enabled on any of the STP. Guard feature on a trunk port that forms the STP. STP is a network protocol that builds a logical loop-free topology for Ethernet networks.
What is spanning-tree port type edge trunk?
If you enter the spanning-tree port type edge trunk command, the port is configured as an edge port even in the access mode. spanning-tree port type normal—This command explicitly configures the port as a normal spanning tree port and the immediate transition to the forwarding state is not enabled.
How does the BPDU filter work in STP?
The STP BPDU filter feature allows control of spanning tree participation on a per-port basis. It can be used to exclude specific ports from becoming part of spanning tree operations. A port with the BPDU filter enabled will ignore incoming BPDU packets and stay locked in the spanning tree forwarding state.
How to disable BPDU filtering in portfast command?
BPDU filtering disables STP similar to what Portfast does. When you use this command, you have to take care to disable BPDU filtering on ports connecting to switches by using the interface configuration command to disable BPDU filtering on that specific port. Cheers!! RJ Expand Post LikeLikedUnlikeReply1 like Admin
What happens when I enable global bpdufilter?
Global: if you enable BPDUfilter globally then any interface with portfast enabled will not send or receive any BPDUs. When you receive a BPDU on a portfast enabled interface then it will lose its portfast status, disables BPDU filtering and acts as a normal interface.
What happens if you disable spanning-tree bpdufilter?
When you receive a BPDU on a portfast enabled interface then it will lose its portfast status, disables BPDU filtering and acts as a normal interface. Interface: if you enable BPDUfilter on the interface it will ignore incoming BPDUs and it will not send any BPDUs. This is the equivalent of disabling spanning-tree.