测试的环境是3745加一个支持，vwic-2mft-g703的nm-2w,对于这模块和卡，37的所有ios版本都支持。
测试打环用得线缆：一跟普通的直通的双绞线，rj45的水晶头（rj45与rj48的区别实现其中的线序不同而已），一根型号为cab-adpt-75-120的线缆，具体看图示。
首先启动router，nm-2w的en灯亮，正常，router已经监测到nm-2w，不过这下还不能确定nm是否完全没问题，等到load ios后，过十秒的样子，g703的卡al亮红灯，正常，然后把直通线与cab-adpt-75-120的接口对上底下为图
然后在ios中配置e1,通道化行，非通道化也行，然后在inter s1/0:0(这个根据solt/inter:0),封装pp no shut，把线缆插上去，显示红绿灯都亮，一会儿正常的是红灯灭，就绿灯亮，在看debug ppp packet信息。。。。。。。e1保持up状态，不过s1/0:0为一个物理up，链路down,这个为正常现象。有些有毛病的模块一回儿e1 up 一会儿down，中间记得模块要插紧。e1 down的时候亮红灯，up的话亮绿灯
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service passWord-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
no network-clock-participate slot 1
no network-clock-participate slot 3
no network-clock-participate slot 4
no aaa new-model
ip subnet-zero
ip cef
!
!
!
no FTP-server write-enable
--More-- !
!
!
controller E1 1/0
channel-group 0 unframed
!
controller E1 1/1
channel-group 0 unframed
!
controller E1 1/2
channel-group 0 unframed
!
controller E1 1/3
channel-group 0 unframed
!
controller E1 3/0
channel-group 0 unframed
!
controller E1 3/1
channel-group 0 unframed
!
controller E1 3/2
channel-group 0 unframed
--More-- !
controller E1 3/3
channel-group 0 unframed
!
controller E1 4/0
channel-group 0 unframed
!
controller E1 4/1
channel-group 0 unframed
!
controller E1 4/2
channel-group 0 unframed
!
controller E1 4/3
channel-group 0 unframed
!
!
interface FastEthernet0/0
no ip address
shutdown
duplex auto
speed auto
!
--More-- interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface Serial1/0:0
no ip address
encapsulation ppp
!
interface Serial1/1:0
no ip address
encapsulation ppp
!
interface Serial1/2:0
no ip address
encapsulation ppp
!
interface Serial1/3:0
no ip address
encapsulation ppp
!
interface Serial3/0:0
--More-- no ip address
encapsulation ppp
!
interface Serial3/1:0
no ip address
encapsulation ppp
!
interface Serial3/2:0
no ip address
encapsulation ppp
!
interface Serial3/3:0
no ip address
encapsulation ppp
!
interface Serial4/0:0
no ip address
encapsulation ppp
!
interface Serial4/1:0
no ip address
encapsulation ppp
!
--More-- interface Serial4/2:0
no ip address
encapsulation ppp
!
interface Serial4/3:0
no ip address
encapsulation ppp
!
ip classless
ip http server
!
!
line con 0
line aux 0
line vty 0 4
login
!
end
Mar 1 00:06:49.191: Se1/0:0 LCP: O CONFREQ [Closed] id 3 len 10
*Mar 1 00:06:49.191: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:06:51.191: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:06:51.191: Se1/0:0 LCP: O CONFREQ [REQsent] id 4 len 10
*Mar 1 00:06:51.191: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:06:53.207: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:06:53.207: Se1/0:0 LCP: O CONFREQ [REQsent] id 5 len 10
*Mar 1 00:06:53.207: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:06:55.223: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:06:55.223: Se1/0:0 LCP: O CONFREQ [REQsent] id 6 len 10
*Mar 1 00:06:55.223: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:06:57.239: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:06:57.239: Se1/0:0 LCP: O CONFREQ [REQsent] id 7 len 10
*Mar 1 00:06:57.239: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:06:59.255: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:06:59.255: Se1/0:0 LCP: O CONFREQ [REQsent] id 8 len 10
*Mar 1 00:06:59.255: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:07:01.271: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:07:01.271: Se1/0:0 LCP: O CONFREQ [REQsent] id 9 len 10
*Mar 1 00:07:01.271: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:07:03.287: Se1/0:0 LCP: TIMEout: State REQsent
*Mar 1 00:07:03.287: Se1/0:0 LCP: O CONFREQ [REQsent] id 10 len 10
Mar 1 00:07:03.287: Se1/0:0 LCP: MagicNumber 0x11996706 (0x050611996706)
*Mar 1 00:16:38.839: Se3/3:0 LCP: MagicNumber 0x11A227A3 (0x050611A227A3)
*Mar 1 00:16:40.855: Se3/3:0 LCP: TIMEout: State REQsent
*Mar 1 00:16:40.855: Se3/3:0 LCP: O CONFREQ [REQsent] id 33 len 10
*Mar 1 00:16:40.855: Se3/3:0 LCP: MagicNumber 0x11A227A3 (0x050611A227A3)
*Mar 1 00:16:42.871: Se3/3:0 LCP: TIMEout: State REQsent
*Mar 1 00:16:42.871: Se3/3:0 LCP: State is Listen