How do I configure Rapid Spanning Tree Protocol?
How do I configure Rapid Spanning Tree Protocol (RSTP, 802.1w) using the web interface on my managed switch?
- Select Switching > STP > STP Configuration. A screen similar to the following displays.
- Enter the following information: For Spanning Tree Admin Mode, select the Enable radio button.
- Click Apply.
What is spanning tree configuration?
The Spanning Tree Protocol (STP) is defined by IEEE standard 802.1D-1988. The STP generates a single spanning tree inside a network. Such mode proved to be useful for supporting applications and protocols in which frames are delivered out of sequence or as duplicates.
How do I change STP timers?
Setting STP Timers
- Run the system-view command to enter the system view.
- Set the Forward Delay timer, Hello timer, and Max Age timer. Run the stp timer forward-delay forward-delay command to set the Forward Delay timer for the device. By default, the Forward Delay timer is 1500 centiseconds (15 seconds).
What is STP timer and explain different types of STP timers?
STP Timers :
| Timer | Default Value | Description |
|---|---|---|
| MaxAge | 10*Hello time | Max time a switch must wait if no Hello received before proceeding to do change. |
| Forward Delay | 15 seconds | Time taken by switch to change status of ports from forwarding to blocking and vice-versa. |
What is configuration Bpdu?
A BPDU sent by a Root Bridge is called a Configuration BPDU, other switches will receive it, process it and send out a BPDU of their own called a Hello BPDU advertising the data received. In other words, BPDUs sent by the RB are called Configuration BPDUs and BPDUs sent by NON-RB switches are called Hello BPDUs.
What is the difference between Pvst and RSTP?
PVST is usually used on VLANS (or Virtual Local Area Network) while RSTP is often used in LAN. RSTP operates much like STP with Cisco’s enhancements while PVST is a Cisco proprietary in itself. PVST deals with VLANs which means it handles more network devices compared to the RSTP.
What is STP protocol?
Spanning Tree Protocol (STP) is a link management protocol that provides path redundancy while preventing undesirable loops in the network. When it comes to ethernet networks, only one active path can exist between two stations in order for them to function properly.
When do you enable spanning tree protocol ( STP )?
When you enable Spanning Tree Protocol (STP), every port in the switch, VLAN, or network goes through the blocking state and transitory states of listening and learning at power up. If properly configured, each Layer 2 interface stabilizes to the forwarding or blocking state.
How to set root bridge priority in spanning tree?
If an alternate root bridge is desired, use the spanning-tree vlan vlan-id root secondary global configuration mode command. This command sets the priority for the switch to the predefined value 28,672.
How is the stable spanning tree topology determined?
The stable active spanning tree topology of a switched network is determined by the following: 1 Port identifier (port priority and MAC address) associated with each Layer 2 interface. 2 Spanning tree path cost to the root bridge. 3 Unique bridge ID (bridge priority and MAC address) associated with each VLAN on each switch.
What causes propagation delays in the Spanning Tree Protocol?
Propagation delays occur when protocol information passes through a switched LAN. As a result, topology changes take place at different times and at different places in a switched network. When a Layer 2 interface changes from nonparticipation in the spanning tree topology to the forwarding state, it creates temporary data loops.