Accton Technology ES4710BD manual Spanning-tree mst cost, Spanning-tree mst port-priority

ES4710BD 10 Slots L2/L3/L4 Chassis Switch

10.2.2.15spanning-tree mst cost

Command: spanning-tree mst <instance-id>cost <cost> no spanning-tree mst <instance-id> cost

Function: Sets the route cost for the current Ethernet port; “no spanning-tree mst <instance-id> cost” command restores the default value.

Parameters: <instance-id>is the instance ID of the specified instance, ranging from 0 – 48; <cost> is the route cost value, ranging from 1 - 200,000,000.

Command mode: Port configuration Mode

Default: The route cost for the port corresponds to the port bandwidth by default.

Port Type	Default route cost	Recommended Range
10Mbps	2000000	2000000~20000000
100Mbps	200000	200000~2000000
1Gbps	20000	20000~200000
10Gbps	2000	2000~20000
For the port channel, the default port route cost is shown below:
Port Type	Aggregated port number (inside	Default route cost
	allowed aggregating number).
10Mbps	N	2000000/N
100Mbps	N	200000/N
1Gbps	N	20000/N
10Gbps	N	2000/N

Usage Guide: Sets the route cost for the ports that can control the rout routing cost from the instance port to the root bridge, so as to control the election of root port and designated ports. Example: Setting the port 1/2 route cost of the MSTP port corresponding to Instance 2 to 3000000. Switch(Config-Ethernet1/2)#spanning-tree mst 2 cost 3000000

10.2.2.16spanning-tree mst port-priority

Command: spanning-tree mst <instance-id>port-priority <port-priority>

no spanning-tree mst <instance-id>port-priority

Function: Sets the priority of the current port on the specified instance; the “no spanning-tree mst” command restores the default port priority value.

Parameters: <instance-id>is the instance ID of the designated instance ranging from 0 – 48; valid <port-priority>is the port priority value, which is multiples of 16 between 0 to 240, i.e., 0, 16, 32, 48,…, 240.

Command mode: Port configuration Mode

Default: The default port priority value is 128.

Usage Guide: Port ID of the designated instance can be configured by setting port priority, further effecting the root port and designated port election. A smaller port priority value means higher

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