Znyx Networks bh5700 ユーザーズマニュアル

zl2d - Layer 2 daemon for the OpenArchitect switch.

zl2d [start | stop] [-t <msecs>] [-d <level>] [-f] 

     [-p <priority>] <iface..>

zl2d is run after the network interfaces are created and initialized with zconfig.  zl2d 
creates a Linux bridge for each interface using brctl(8). The bridge name is the interface 
name with a ‘b’ pre-pended to it. This command is primarily used for Spanning Tree Protocol 
(STP). Each port associated with the interface is included within the bridge. zl2d starts a 
background task that continues throughout the life of the Layer 2 network. zl2d is a script that 
can be modified to include brctl commands when started and stopped. Examine 
/usr/sbin/zl2d for examples of how to change common options.

start | stop

Starts or stops the zl2d daemon.

-t <msec> Cause zl2d to monitor the Spanning Tree state of each 
port on each bridge every <msec> milliseconds. If unspecified, 

the default is 500 milliseconds.

-f

Enables Fast Forward on bridge(s) using 0x4000 (16384) as 

the dynamic root priority.

-d <level> Sets the level of debugging output required by zl2d. 

The default level is one (1). Setting the debug level higher 
produces more output. Four (4) is currently the maximum output 

level.

-p <priority>

Sets the dynamic root priority. <priority> should 

be specified as a decimal number.  A priority of 0 disables root 

priority change.

<iface…>

The network interfaces on which zl2d should operate. 

These network interfaces must first be created by zconfig. zl2d 

does not operate with standard network interface cards. It only 
works on switch network interfaces created by zconfig.

Ethernet Switch Blade User's Guide

release  3.2.2j

page  302