Brocade Communications Systems IP250 Target context STP type, IOS Vlan STP, Rstp, STP, RSTP, Mstp

27 Spanning Tree Protocol configuration

FIGURE 324 STP Configuration dialog box

3.Select the target switch, VLAN, or port from the Target Context list. Target contexts and spanning tree options at the product, VLAN, or port level are listed in Table 85.

TABLE 85 Spanning tree configuration matrix

Target context	STP type
IOS VLAN	STP, RSTP
IOS Port	STP, RSTP
FOS Product	STP, RSTP, MSTP
FOS VLAN	MSTP
FOS Port	STP, RSTP, MSTP
NOS Product	STP, RSTP, MSTP, PVST, and RPVST
NOS VLAN	MSTP
NOS Port	STP, RSTP, MSTP, PVST, and RPVST

4.Select the type of Spanning Tree Protocol from the Spanning Tree list.

5.Select the Enable check box if you want to enable the protocol you selected.

6.Enter a value in the Priority field to identify the root bridge in a spanning tree (instance of STP). The bridge with the lowest value has the highest priority and is the root. A higher numerical value means a lower priority; thus, the highest priority is 0. The values range from 0 through 61440 for a Fabric OS device; the default is 32768. The values range from 0 through 65535 for an IronWare OS device; the default is 32768.

7.Enter the number of seconds a bridge waits (the listen and learn period) before it begins to forward data packets in the Forward Delay field. The values range from 4 through 30 seconds. The default is 15 seconds.

8.Enter the number of seconds a root bridge waits before it sends the next BPDU in the Hello Time field. The values range from 1 through 10 seconds. The default is 2 seconds.

9.Enter the number of seconds a bridge waits for a hello packet from the root bridge before initiating a topology change in the Max Age field. The values range from 6 through 40 seconds. The default is 20 seconds.

836	Brocade Network Advisor IP User Manual
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