Configuring the Device as a PPPoE Client on Huawei AR1200

PPPoE is a PPP protocol running on the Ethernet and widely used on campus networks.

Carriers want to connect multiple hosts at a site to the same remote access device. The

access device is expected to provide access control and accounting for these hosts in a

manner similar to dial-up access using PPP. Using PPPoE, carriers can achieve this goal

at lower cost because Ethernet is the most cost-effective among all access technologies

and PPP implements access control and accounting.

PPPoE allows a large number of hosts on an Ethernet to connect to the Internet using a

remote access device and controls each host using PPP. PPPoE features a large

application scale, high security, and convenient accounting.

The PPPoE technology implements practical applications such as Internet access

accounting and is widely used by broadband access carriers.

How to configure the device as a PPPoE client on Huawei AR1200

When the device functions as a PPPoE client, all hosts in a LAN use one ADSL account

to dial up to the Internet.

1  Configuring a Dialer Interface

Context

Before configuring the PPPoE client, you need to configure a dialer interface and a dialer

bundle for the dialer interface.

 NOTE:

The device functioning as a PPPoE client supports only resource-shared DCC (RS-

DCC).

Procedure

1. Run:

system-view

The system view is displayed.

2. Run:

dialer-rule

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The dialer rule view is displayed.

3. Run:

dialer-rule dialer-rule-number { acl { acl-number | name acl-name } | ip { deny

| permit } | ipv6 { deny | permit } }

A dialer ACL is configured.

4. Run:

quit

Return to the system view.

5. Run:

interface dialer number

A dialer interface is created and the dialer interface view is displayed.

1.

Run:

dialer user user-name

A dialer user name is created.

2. Run:

dialer-group group-number

A dialup group that the dialer interface belongs to is configured.

The value of group-number must be the same as the value of dialer-rule-number set

in step 3.

3. Run:

dialer bundle number

RS-DCC is enabled and a dialer bundle is configured for the dialer interface.

4. Configure an IP address for the dialer interface.

Configure an IPv4 address for the dialer interface.

Directly configure the IP address.

Run:

ip address ip-address { mask | mask-length }

An IP address is configured for the dialer interface.

Configure the dialer interface to obtain an IP address from the

PPPoE server.

2

Run:

ip address ppp-negotiate

The dialer interface is configured to obtain an IP address from the PPPoE

server through PPP negotiation.

Configure an IPv6 address for the dialer interface.

Run:

ipv6 address { ipv6-address prefix-length | ipv6-address/prefix-length }

An IPv6 address is configured for the dialer interface.

 NOTE:

Before configuring an IPv6 address for a dialer interface, run the ipv6 command

in the system view to enable IPv6 packet forwarding and run the ipv6

enable command on the interface to enable IPv6.

2  Enabling the PPPoE Client Function on the Interface

Context

The PPPoE session works in permanent online mode or packet triggered mode.

In permanent online mode, the device initiates a PPPoE session immediately

after the physical link becomes Up. The PPPoE session persists until you delete it.

In triggered online mode, the device does not initiate a PPPoE session

immediately after the physical link becomes Up. Instead, the device initiates a PPPoE

session only when data needs to be transmitted on the link. If no data is transmitted

on the PPPoE link within the specified period, the device terminates the PPPoE

session.

Ethernet interfaces, PON interfaces, and ATM interfaces support PPPoE sessions.

When the device uses an Ethernet interface or a PON interface to connect to an

ADSL modem, create a PPPoE session on the Ethernet interface or the PON

interface.

When the device uses an ATM interface to connect to the Internet directly, create

a PPPoE session on the virtual Ethernet interface bound to the ADSL interface.

Procedure

1. Run:

system-view

The system view is displayed.

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2. Run:

interface interface-type interface-number

The interface view is displayed.

3. Run:

pppoe-client dial-bundle-number number [ on-demand ] [ no-hostuniq ] [ ppp-

max-payload value ]

A dialer bundle is specified for a PPPoE session.

If no-hostuniq is not specified, the PPPoE session initiated by the PPPoE client

contains the Host-Uniq field. The PPPoE client uses this field to associate an access

server response with a particular host request, which ensures strict check.

If on-demand is specified, run the dialer timer idle seconds command to set the

link idle time on the dialer interface.

 NOTE:

Multiple PPPoE sessions can be established on an Ethernet interface or a PON

interface. That is, an Ethernet interface or a PON interface can belong to multiple

dialer bundles. A dialer bundle can contain only one Ethernet interface or one PON

interface. One dialer bundle maps one PPPoE session. If the dialer bundle of a dialer

interface already has an Ethernet interface or a PON interface used for PPPoE, no

interface can be added to the dialer bundle. If the dialer bundle contains other

interfaces, no Ethernet interface or PON interface can be added to the dialer bundle

to establish PPPoE sessions on the PPPoE client.

3  (Optional) Configuring NAT

Context

When local area network (LAN) users connect to the device functioning as a PPPoE

client on an IPv4 network, LAN users use private IP addresses. Network Address

Translation (NAT) needs to be configured on the device to translate private IP addresses

into public addresses so that LAN users can access the Internet.

Procedure

Configure NAT on a dialer interface. For details, see NAT Configuration in the IP

service configuration.

 NOTE:

When the IP address of the PPPoE client assigned by the PPPoE server is used as

the NAT server IP address, configure the dynamic DNS (DDNS) client. DNS refers to 4

domain name system. For details about DDNS client configuration, see Configuring

the DDNS Client.

4  Checking the Configuration

Pre-configuration Tasks

The device has been configured as the PPPoE client so that hosts on the LAN connected

to the device can dial up to the Internet. A PPPoE session has been established, and you

can view the PPPoE session status.

Procedure

Run the display pppoe-client session { packet | summary } [ dial-bundle-

number number ] command to check the PPPoE session status and statistics.

Example for Configuring the PPPoE Client

Networking Requirements

As shown in Figure, the device functioning as the PPPoE client connects to hosts in the

LAN using GE1/0/0 and connects to the PPPoE server using GE2/0/0.

Users want the hosts to share an account. If the account is authenticated successfully on

the PPPoE server, a PPPoE session is established. Service requirements are as follows:

The device establishes a PPPoE session with the PPPoE server using PPP

authentication.

When no data needs to be transmitted within the specified period, the PPPoE

client terminates the PPPoE session. When data needs to be transmitted, the PPPoE

client establishes a PPPoE session with the PPPoE server again.

Figure  Networking diagram of the device functioning as the PPPoE client 

Configuration Roadmap

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The configuration roadmap is as follows:

1. Configure Challenge Handshake Authentication Protocol (CHAP) authentication

on the dialer interface so that the device can establish a PPPoE session with the

PPPoE server using PPP authentication.

2. Set the packet triggered mode so that the PPPoE client terminates the PPPoE

session when no data is transmitted within the specified period and establishes the

PPPoE session again when data needs to be transmitted.

Procedure

1. Configure the PPPoE server.

Configure the authentication mode, IP address allocation mode, and IP address or IP

address pool for the PPPoE client. For details about the configuration procedure, see

the documentation of the PPPoE server. If the device functions as the PPPoE

server.

2. Configure a dialer interface.

3. <Huawei> system-view

4. [Huawei] sysname Router

5. [Router] dialer-rule

6. [Router-dialer-rule] dialer-rule 1 ip permit

7. [Router-dialer-rule] quit

8. [Router] interface dialer 1

9. [Router-Dialer1] dialer user user2

10. [Router-Dialer1] dialer-group 1

11. [Router-Dialer1] dialer bundle 1

12. [Router-Dialer1] ppp chap user user1@system

13. [Router-Dialer1] ppp chap password cipher huawei

14. [Router-Dialer1] dialer timer idle 300

15. INFO: The configuration will become effective after link reset.

16. [Router-Dialer1] dialer queue-length 8

17. [Router-Dialer1] ip address ppp-negotiate

[Router-Dialer1] quit

18. Create a PPPoE session.

19. [Router] interface gigabitethernet 2/0/0

20. [Router-GigabitEthernet2/0/0] pppoe-client dial-bundle-number 1 on-demand

[Router-GigabitEthernet2/0/0] quit

21. Configure a static route from the local host to the PPPoE server.

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Assume that the IP address of the PPPoE server is 10.10.10.3.

[Router] ip route-static 0.0.0.0 0 dialer 1

22. Verify the configurations.

Run the display pppoe-client session summary command to check the PPPoE

session status and configuration. The following command output shows that the

PPPoE session status is Up and the session configuration is correct.

[Router] display pppoe-client session summary

PPPoE Client Session:

ID Bundle Dialer Intf Client-MAC Server-MAC State

1 1 1 GE2/0/0 00e0fc030201 0819a6cd0680 UP

Configuration Files

Configuration file of the PPPoE client

#

dialer-rule

dialer-rule 1 ip permit

#

interface Dialer1

link-protocol ppp

ip address ppp-negotiate

dialer user user2

ppp chap user user1@system

ppp chap password cipher huawei

dialer bundle 1

dialer queue-length 8

dialer timer idle 300

dialer-group 1

#

interface GigabitEthernet2/0/0

pppoe-client dial-bundle-number 1 on-demand

#

ip route-static 0.0.0.0 0.0.0.0 Dialer1

#

return

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