Configuring Spanning Tree Link Type

If a port is configured as point-to-point link and its port role is designated, then IS5Com PVRST+ negotiates a rapid transition to forwarding with the other port by using a proposal-handshake agreement mechanism to ensure that the topology is loop free. By default, if the interface is full-duplex, it is considered to have a point-to-point connection. If the interface is half duplex, then it is considered to have a shared connection. This default setting of link type can be overridden to enable rapid transition to forwarding port state.

Execute the following commands in the switch.
Type the following:
- Enter the Global Configuration Mode.
```
iS5comm# configure terminal
```
- Specify the interface for which the link type is to be configured.
```
iS5comm(config)# interface gigabitethernet 0/1
```
Note:
Valid interfaces include physical interfaces and port-channel logical interfaces (port-channel port-channel-number).
- Configure link type of interface as point-to-point.
iS5comm(config-if) # spanning-tree link-type point-to-point
- Return to the Privileged EXEC Mode.
```
iS5comm(config-if)#end
```

View the spanning tree information by executing the following show command.

Type the following:

iS5comm# show spanning-tree vlan 1

Spanning-tree for VLAN 1

We are the root of the Spanning Tree

Root Id         Priority   32769

Address    00:01:02:03:04:01

Cost       0

Port       0

Hello Time 2 Sec, Max Age 20 Sec, Forward Delay 15 Sec

Spanning Tree Enabled Protocol PVRST

Bridge Id       Priority 32769

Address 00:01:02:03:04:01

Hello Time 2 sec, Max Age 20 sec, Forward Delay 15 sec

Name   Role         State       Cost     Prio   Type

----   ----         -----       ----     ----   ------

Gi0/1  Designated   Forwarding  200000   128    P2P

Gi0/2  Designated   Forwarding  200000   128    SharedLan

Note:

Execute the no spanning-tree link-type Interface Configuration mode command to set the default value of the link type.

iS5comm(config-if)# no spanning-tree link-type