Using VLANs, Spanning Tree, and Hunt Groups (Layer 2 and Layer 3)

 

 

 

 

 

Table 12-6.Spanning Tree Bridge Port Information Parameters (Continued)

 

 

 

 

 

Parameter

Definition

 

 

 

 

 

 

Path Cost

Sets the spanning tree path cost for this port. The ports that you

 

 

 

prefer be used by the spanning tree should have the lowest path

 

 

 

cost.

 

 

 

Note: Configuring the path cost for a link when the link is in

 

 

 

the down state is not saved in the configuration NV memory.

 

 

 

Establish the link first, before configuring the path cost.

 

 

 

 

 

 

Top. Change

Allows you to enable or disable topology change detection.

 

 

Detection

Specifies whether a Topology Change Notification (TCN) packet

 

 

 

is sent through the root port (or if this switch is the root bridge,

 

 

 

whether or not Fast Aging occurs) whenever the port enters the

 

 

 

forwarding or blocking states. This attribute should only be used

 

 

 

on port which connect to no other switches.

 

 

 

Note: A topology change occurs when you change a port

 

 

 

mirroring piggyback port.

 

 

 

 

 

6.Click APPLY to save your changes, or CANCEL to restore previous settings.

Disabling Spanning Tree Mode for the Port

To disable spanning tree mode for the port:

1.In the System Configuration section of the Web Agent window, click Modules & Ports. The Module Information dialog box opens.

2.In the Switch Ports column, click the switch port number. The Switch Ports dialog box opens.

3.In the Name column, click the port number to be disabled. The Switch Port Configuration dialog box for that port opens.

4.From the Spanning Tree Mode pull-down menu, select Disable.

5.Click APPLY to save your changes, or CANCEL to restore previous settings.

Using Hunt Groups to Aggregate Bandwidth between Switches

Hunt groups allow you to aggregate multiple switch ports into a single group, effectively combining the bandwidth into a single connection.

For example, if you connect three gigabit ports each on a pair of switches into a hunt group, the aggregated connection will have six gigabits of available bandwidth (full- duplex).

Cajun P550/P220 Switch Operation Guide

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