Znyx Networks bh5700 To Enable Rapid Spanning Tree, Create a bridge device from the zhp device

To Enable Rapid Spanning Tree:

Create a VLAN containing the ports that will be a part of the Linux bridge running Rapid Spanning Tree. This example will use ports 0-3 (untagged):

zconfig zhp0: vlan1=zre0..3 zconfig zre0..3=untag1

Create a bridge device from the zhp device,

zl2d start zhp0

A Bridge device named bzhp0 should now exist consisting of ports zre0 through zre3 with Spanning Tree enabled. To view the bridge device, use the brctl command,

brctl show

brctl showbr bzhp0

Port Path Cost

Each port has an associated cost that contributes to the total cost of the path to the Root Bridge when the port is the root port. The smaller the cost, the better the path. The Ethernet Switch Blade uses the following IEEE 802.1D recommendations based on the connection speed of your port:

Port Path Cost

Link Speed	Recommended Value	Recommended Range
10 Mb/s	100	50-600
100 Mb/s	19	10-60
1 Gb/s	4	3-10
10 Gb/s	TBD	TBD

To change the port path, use the brctl setpathcost option. For example, to set the port priority to a value consistent with a gigabit interface,

brctl setpathcost bzhp0 zre1 4

Ethernet Switch Blade User's Guide release 3.2.2j page 51