3Com Router User Manual

Typical MP Configuration Example177
[Router]local-user router-c password simple router-c
bSpecify the virtual interface templates for the two users and begin PPP 
negotiation for the NCP information using this template
[Router]ppp mp user router-b bind virtual-template 1
[Router]ppp mp user router-c bind virtual-template 2
cConfigure virtual interface template
[Router]interface virtual-template 1
[Router-Virtual-Template1]ip address 202.38.166.1 255.255.255.0
[Router]interface virtual-template 2...

178CHAPTER 12: CONFIGURING PPP AND MP
[Router]interface serial2: 1
[Router-Serial2:1]ppp mp
[Router-Serial2:1]ppp authentication-mode pap
[Router-Serial2:1]ppp pap local-user router-c password simple 
router-c
Fault Diagnosis and 
Troubleshooting of 
PPPFault 1: Link always fails to turn to up status.
Troubleshooting: It is possible that PPP authentication parameter is not configured 
correctly, resulting in the failure of PPP authentication.
Turn on the debugging switch of PPP, if LCP negotiation is...

13
CONFIGURING PPPOE CLIENT
This chapter contains information on the following topics:
■PPoE Overview
■Configure PPPoE Client
■Display and Debug PPPoE Client
■Typical PPPoE Configuration Example
PPoE OverviewPoint-to-Point Protocol over Ethernet (PPPoE) can be used for connecting Ethernet 
hosts to a remote access concentrator through a simple bridging device. With 
PPPoE, the remote access device can control and implement billing on the 
accessed subscribers. Compared with traditional access approaches,...

180CHAPTER 13: CONFIGURING PPPOE CLIENT
implement the client dial-up function of PPPoE), so the subscribers can access the 
Internet without installing a PPPoE client software on PCs. Furthermore, all the PCs 
on the same LAN can share an ADSL account.
Figure 52   Networking for PPPoE
As shown in the above figure, the PCs on an Ethernet are connected to a 3Com 
Router running PPPoE client. The data destined for the Internet first reach the 
router where PPPoE encapsulates the data, and then go through...

Configure PPPoE Client181
Depending on the needs, it is probably required to configure the parameters such 
as PPP authentication on a dialer interface. The dialer interface configuration will 
not be covered in this section, however. Please see Operation Manual - Dial-up for 
reference.
2Configure PPPoE Session
Perform the following configuration in Ethernet interface view.
Ta b l e 214   Configure PPPoE session
The 3Com Router support two types of PPPoE connections, which are permanent 
connections and...

182CHAPTER 13: CONFIGURING PPPOE CLIENT
Regardless of whether a PPPoE session is permanent or packet-triggered, 
executing the 
undo pppoe-client command will permanently delete the session. 
Hence, you need to make reconfiguration for establishing a new PPPoE session.
Display and Debug 
PPPoE ClientPerform the display and debugging command in all views.
Ta b l e 216   Display and debug PPPoE Client
Typical PPPoE 
Configuration 
Example
Access a LAN to the 
Internet via ADSLI. Networking Requirements
The...

Typical PPPoE Configuration Example183
[Router-Dialer1]ip ppp-negotiate
[Router-Dialer1]ppp pap local-user 3com password cipher 12345
2Configure a PPPoE session
[Router]interface ethernet 1
[Router-Ethernet1]pppoe-client dial-bundle-number 1
3Configure the LAN interface and the default route
[Router]interface ethernet 0
[Router-Ethernet0]ip address 192.168.1.1 255.255.255.0
[Router]ip route-static 0.0.0.0 0.0.0.0 dialer 1
If the IP addresses assigned to the PCs on the LAN are private addresses, Network...

184CHAPTER 13: CONFIGURING PPPOE CLIENT 

14
CONFIGURING SLIP
This chapter contains information on the following topics:
■SLIP Overview
■Configure SLIP
■Display and Debug SLIP
■Typical SLIP Configuration Example
SLIP OverviewSLIP (Serial Link Internet Protocol) can transmit data over the asynchronous serial 
link. Through SLIP, the user can dial up to access the Internet. Compared with 
other link layer protocols, SLIP is very simple. It does not provide protocol address, 
error check, header compression. In addition, SLIP does not distinguish...

186CHAPTER 14: CONFIGURING SLIP
By default, the synchronous/asynchronous serial interface operates in synchronous 
mode
2Configure the link layer protocol of the interface to SLIP
Perform the following task in the asynchronous interface view.
Ta b l e 218   Configure the link layer protocol of the interface to SLIP
By default, the link layer protocol of the interface is PPP.
Note the following:
■The link layer protocol of the interface can be set to SLIP only when it operates 
in the asynchronous mode....