请教引导盘制作问题

我在制作引导盘的时候出现的问题如下：
目前vxworks已经可以下载，但是还是有问题。我将ftp server的记录及目标机的启动记录
列出，请各位帮我看看。
ftp server:
connection acceped from 202.117.113.3
command “USER fwzfwz1” received
PASSWORD accepted
User fwzfwz1 logged in
Command “TYPE I”received
TYPE set to I N
Command”RETR vxworks”received
RETRieve started on file vxworks
Transfer finished
Got file D:\\TORNADO\\TARGET\\CONFIG\\PCPENTIUM\\vxworks successfully
Command “QUIT”received
QUIT or close fwzfwz1 logged out
目标机启动记录的后半部分：
muxdevload failed for deviced entry 0!
Attached TCP/IP internat to ene unit 0
Attaching network interface lo0…done
NFS client support not include
Wdbconfig:error configing WDB communiction interface
Vxworks 5.4
BSP verion 1.2/0
WDB :agent configuration failed
0xffee7c(tRootTask):muxload failed
备注：我的目标机和主机是通过网线相连，没有使用串口。
我没有设置WDB,采用的是默认值，请问WDB如何设置！