Allied-telesis AT-S62 Manual do Utilizador descarregar pdf (Página 277)

100

101

AT-S62 Management Software Web Browser Interface User’s Guide

Section IV: Spanning Tree Protocols 277

2 - Port Cost

The spanning tree algorithm uses the cost parameter to decide which

port provides the lowest cost path to the root bridge for that LAN. The

range is 0 to 65,535. The default setting is Auto-detect, which sets port

cost depending on the speed of the port. Table 9 lists the STP port

costs with Auto-Detect.

Table 10 lists the STP port costs with Auto-Detect when a port is part of

a port trunk.

6. After configuring the parameters, click Apply.

Table 8. Port Priority Value Increments

Increment

Port

Priority

Increment

Port

Priority

008128

1 16 9 144

2 3210160

3 48 11 176

4 6412192

5 8013208

6 9614224

7 112 15 240

Table 9. STP Auto-Detect Port Costs

Port Speed Port Cost

10 Mbps 100

100 Mbps 10

1000 Mbps 4

Table 10. STP Auto-Detect Port Trunk Costs

Port Speed Port Cost

10 Mbps 4

100 Mbps 4

1000 Mbps 2

1 2 ... 272 273 274 275 276 277 278 279 280 281 282 ... 371 372

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