H3C Technologies H3C SecPath F1000-E - Manual (Page 119)

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Configuring the port priority
The priority of a port is an important factor in determining whether the port can be elected as the root
port of a device. If all other conditions are the same, the port with the highest priority will be elected as
the root port.
On a spanning tree device, a port can have different priorities and play different roles in different
spanning trees, so that data of different VLANs can be propagated along different physical paths,
implementing per-VLAN load balancing. You can set port priority values based on the actual networking
requirements.
To configure the priority of a port or a group of ports:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Ethernet interface view or Layer
2 aggregate interface view. interface interface-type
interface-number
N/A
3. Configure the port priority.
• In STP/RSTP mode:
stp port priority priority
• In MSTP mode:
stp [ instance instance-id ] port
priority priority
Use either command.
128 for all ports by default.
NOTE:
If the port priority changes, the system re-calculates the port role and initiate a state transition.
Configuring the port link type
A point-to-point link directly connects two devices. If two root ports or designated ports are connected
over a point-to-point link, they can rapidly transition to the forwarding state after a proposal-agreement
handshake process.
To configure the link type of a port or a group of ports:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter Ethernet interface view or
Layer 2 aggregate interface view.
interface interface-type
interface-number
N/A
3. Configure the port link type.
stp point-to-point { auto |
force-false | force-true }
By default, the link type is auto
where the port automatically
detects the link type.