Allied Telesis management software layer 2+ fast ethernet switches manual Mbps 20,000 Portpriority

Chapter 26: RSTP Commands

Table 7 lists the RSTP port costs with Auto-Detect when the port is part of a port trunk.

Table 7 RSTP Auto-Detect Port Trunk Costs

Port Speed

Port Cost

10 Mbps

20,000

100 Mbps

20,000

1000 Mbps

2,000

portpriority		Specifies the port’s priority. This parameter is used as a
		tie breaker when two or more ports are determined to
		have equal costs to the root bridge. The range is 0 to
		240 in increments of 16. There are sixteen increments.
		You specify the increment that corresponds to the
		desired value. The default is 128, which is increment 8.
		Table 8 Port Priority Value Increments
	Increment		Bridge	Increment	Bridge
			Priority		Priority
	0		0	8	128
	1		16	9	144
	2		32	10	160
	3		48	11	176
	4		64	12	192
	5		80	13	208
	6		96	14	224
	7		112	15	240
edgeport		Defines whether the port is functioning as an edge
		port. An edge port is connected to a device
		operating at half-duplex mode and is not
		connected to any device running STP or RSTP.
		Options are:
		yes, on, true	The port is an edge port. The
			values are equivalent. This is the
			default.

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