Example for Configuring User-Side Multicast for PPPoE Access Users

This section provides an example for configuring user-side multicast for PPPoE access users.

Networking Requirements

On the network shown in Figure 1, users (with PC1 and PC2) are PPPoE access users, and they want to join multicast programs. Configure user-side multicast to implement user-based on-demand multicast data forwarding.

Figure 1 Configuring user-side multicast for PPPoE access users

Interface 1 and interface 2 in this example stand for GE 0/1/0 and GE 0/1/1.1, respectively.

Configuration Roadmap

The configuration roadmap is as follows:

Configure an IPv4 address pool.
Configure Authentication, Authorization and Accounting (AAA) schemes.
Configure a domain.
Configure the PPPoE access mode:
1. Configure a virtual template (VT) interface.
2. Bind a VT to an interface.
3. Bind a sub-interface to a VLAN.
4. Configure a BAS interface and specify a user access type for the interface. (The interface can be a main, a common sub-interface, or a QinQ sub-interface. A common sub-interface is used in the example.)
Enable session-based multicast traffic replication on a BAS interface.
Configure basic multicast functions:
1. Enable multicast routing.
2. Enable PIM-SM on all BRAS interfaces.
3. Enable IGMP on the BRAS interface connected to users.

Data Preparation

IPv4 address pool
Authentication and accounting schemes
User domain parameters
VT number
BAS interface parameters

Procedure

Configure an IPv4 address pool.

<HUAWEI> system-view
[HUAWEI] sysname BRAS
[*HUAWEI] commit
[~BRAS] ip pool huawei bas local
[*BRAS-ip-pool-huawei] gateway 10.0.0.1 255.255.0.0
[*BRAS-ip-pool-huawei] section 1 10.0.0.1 10.0.255.255
[*BRAS-ip-pool-huawei] quit
[*BRAS] commit

Configure AAA schemes.

# Configure an authentication scheme.

[~BRAS] aaa
[*BRAS-aaa] authentication-scheme none
[*BRAS-aaa-authen-none] authentication-mode none
[*BRAS-aaa-authen-none] quit
[*BRAS-aaa] commit

# Configure an accounting scheme.

[~BRAS-aaa] accounting-scheme none
[*BRAS-aaa-accounting-none] accounting-mode none
[*BRAS-aaa-accounting-none] quit
[*BRAS-aaa] quit
[*BRAS] commit

Configure a domain.

[~BRAS] aaa
[*BRAS-aaa] domain ipv4
[*BRAS-aaa-domain-ipv4] authentication-scheme none
[*BRAS-aaa-domain-ipv4] accounting-scheme none
[*BRAS-aaa-domain-ipv4] ip-pool huawei
[*BRAS-aaa-domain-ipv4] quit
[*BRAS-aaa] quit
[*BRAS] commit

Configure a VT interface.

[~BRAS] interface virtual-template 100
[*BRAS-Virtual-Template100] ppp authentication-mode chap
[*BRAS-Virtual-Template100] quit
[*BRAS] commit

Bind a sub-interface to a VLAN and specify a VT interface for the sub-interface.

[~BRAS] interface gigabitethernet 0/1/1.1
[*BRAS-GigabitEthernet0/1/1.1] user-vlan 2
[*BRAS-GigabitEthernet0/1/1.1-vlan-2-2] quit
[*BRAS-GigabitEthernet0/1/1.1] pppoe-server bind virtual-template 100
[*BRAS-GigabitEthernet0/1/1.1] commit

Configure a BAS interface and specify a user access type for the interface.

[~BRAS-GigabitEthernet0/1/1.1] bas
[*BRAS-GigabitEthernet0/1/1.1-bas] access-type layer2-subscriber default-domain authentication ipv4
[*BRAS-GigabitEthernet0/1/1.1-bas] quit
[*BRAS-GigabitEthernet0/1/1.1] commit

# Run the display access-user domain ipv4 command to display online user information. The command output shows that users with ID 1280 and 1281 accessed the Internet through PPPoE.

[~BRAS] display  access-user domain ipv4
  ------------------------------------------------------------------------------
  UserID  Username                Interface      IP address       MAC
          Vlan          IPv6 address             Access type
  ------------------------------------------------------------------------------
  1280    user@ipv4               GE0/1/1.1        10.0.255.251      00-e0-fc-32-34-56
          -/-           -                        PPPoE
  1281    user@ipv4               GE0/1/1.1        10.0.255.250      00-e0-fc-12-34-56
          -/-           -                        PPPoE
  ------------------------------------------------------------------------------
  Normal users                       : 2
  RUI Local users                    : 0
  RUI Remote users                   : 0
  Total users                        : 2

Enable session-based multicast traffic replication on a BAS interface.

[~BRAS-GigabitEthernet0/1/1.1] bas
[*BRAS-GigabitEthernet0/1/1.1-bas] multicast copy by-session
[*BRAS-GigabitEthernet0/1/1.1-bas] quit
[*BRAS-GigabitEthernet0/1/1.1] quit
[*BRAS] commit

Configure basic multicast functions.

[~BRAS] multicast routing-enable
[*BRAS] interface gigabitethernet 0/1/0
[*BRAS-GigabitEthernet0/1/0] undo shutdown
[*BRAS-GigabitEthernet0/1/0] ip address 10.1.1.1 255.255.255.0
[*BRAS-GigabitEthernet0/1/0] pim sm
[*BRAS-GigabitEthernet0/1/0] quit
[*BRAS] commit
[~BRAS] interface gigabitethernet 0/1/1.1
[*BRAS-GigabitEthernet0/1/1.1] pim sm
[*BRAS-GigabitEthernet0/1/1.1] igmp enable
[*BRAS-GigabitEthernet0/1/1.1] quit
[*BRAS] commit

Verify the configuration.

# Run the display multicast group-ip command to display information about users of a specified multicast group. The command output shows that users with ID 1280 and 1281 joined a multicast program whose group address is 225.0.0.1.

[~BRAS] display multicast group-ip 225.0.0.1 out-interface GigabitEthernet 0/1/1.1
  User ID    User IP                     User type    Interface

  1280       10.0.255.251                 Local        GigabitEthernet0/1/1.1
  1281       10.0.255.250                 Local        GigabitEthernet0/1/1.1

  Local user number :2
  Remote user number:0
  Total user number :2

# Run the display multicast user-id command to display information about the multicast programs that a specified user joined on a BAS interface. The following example uses the command output for user 1280.

[~BRAS] display multicast user-id 1280
  User information:
  User ID             :1280
  User IPv4 address   :10.0.255.251
  Gateway IPv4 address:10.0.0.1
  BRAS interface      :GigabitEthernet0/1/1.1
  User MAC-address    :00-e0-fc-22-34-56
  MAX program list    :4


  User order program:
  Group IP           Source IP
  225.0.0.1          0.0.0.0


  Total:1

# Run the display pim routing-table command to display PIM routing entries.

[~BRAS] display pim routing-table
 VPN-Instance: public net
 Total 1 (*, G) entry; 1 (S, G) entry

 (*, 225.0.0.1)
     RP: NULL
     Protocol: pim-sm, Flag: WC NIIF
     UpTime: 01:37:51
     Upstream interface: NULL, Refresh time: 01:37:51
         Upstream neighbor: NULL
         RPF prime neighbor: NULL
     Downstream interface(s) information:
     Total number of downstreams: 1
        1: GigabitEthernet0/1/1(bas)
             Protocol: igmp, UpTime: 01:37:51, Expires: -

 (10.1.1.100, 225.0.0.1)
     RP: NULL
     Protocol: pim-sm, Flag: SPT LOC ACT
     UpTime: 04:34:52
     Upstream interface: GigabitEthernet0/1/0, Refresh time: 04:34:52
         Upstream neighbor: NULL
         RPF prime neighbor: NULL
     Downstream interface(s) information:
     Total number of downstreams: 1
        1: GigabitEthernet0/1/1(bas)
             Protocol: pim-sm, UpTime: 01:37:51, Expires: -

Configuration Files

#
sysname BRAS
#
multicast routing-enable
#
ip pool huawei bas local
 gateway 10.0.0.1 255.255.0.0
 section 1 10.0.0.1 10.0.255.255
#
aaa
 #
 authentication-scheme none
  authentication-mode none
 #
 accounting-scheme none
  accounting-mode none
 #
 domain ipv4
  authentication-scheme none
  accounting-scheme none
  ip-pool huawei
#
interface Virtual-Template100
 ppp authentication-mode chap
#
interface GigabitEthernet0/1/0
 undo shutdown
 ip address 10.1.1.1 255.255.255.0
 pim sm
#
interface GigabitEthernet0/1/1.1
 user-vlan 2 
 pppoe-server bind Virtual-Template 100
 pim sm
 igmp enable
 bas
 #
  access-type layer2-subscriber default-domain authentication ipv4
  multicast copy by-session
#
return