Example for Configuring Dual-Device IGMP Snooping Hot Backup

This section provides an example for configuring dual-device IGMP snooping hot backup in a master/backup E-Trunk scenario. After dual-device IGMP snooping hot backup is configured, multicast services are not interrupted during a master/backup E-Trunk switchover.

Networking Requirements

On the network shown in Figure 1, configure an E-Trunk on Device A and Device B. Device A is the master device, and Device B is the backup device. In normal situations, the link between Device A and Device C is up, and the link between Device B and Device C is down. Device C sends packets to Device A through the link in the up state to establish IGMP snooping entries. After receiving the packets, Device A backs up the packets to Device B through the RBS channel.

If Device A or the link between Device A and Device C fails, a master/backup E-Trunk switchover is performed and the link between Device B and Device C goes up. Device C sends packets to Device B through the link in the up state, ensuring IGMP snooping service continuity.

Figure 1 Example for configuring dual-device IGMP snooping hot backup in a master/backup E-Trunk scenario

To ensure that IGMP snooping services are not interrupted during a master/backup E-Trunk switchover, configure dual-device IGMP snooping hot backup on Device A and Device B. After the configuration is complete, Device B synchronizes IGMP snooping entries from Device A in real time.

Configuration Roadmap

The configuration roadmap is as follows:

Assign IP addresses to loopback interfaces on the master and backup devices, and configure a routing protocol.
Configure an E-Trunk on Device A and Device B.
Establish a dual-device backup platform on Device A and Device B.
Create BFD sessions and bind them to E-Trunk on Device A and Device B.
Enable remote backup for IGMP snooping services on Device A and Device B.

Data Preparation

To complete the configuration, you need the following data:

Eth-Trunk ID on Device A, Device B, and Device C: 1
E-Trunk ID on Device A and Device B: 1
Device A's loopback1 interface IP address is: 1.1.1.1/32; Device B's loopback1 interface IP address: 2.2.2.2/32; TCP port number: 1025
Device A's IP address: 10.0.0.1/24; Device B's IP address: 10.0.0.2/24.
RBS name: service1; RBP name: profile1; backup ID: 10

Procedure

Assign an IP address to each interface and configure OSPF on Device A and Device B. For configuration details, see Configuration Files in this section.
Add an Ethernet interface to Eth-Trunk 1, and add Eth-Trunk 1 to E-Trunk 1 on Device A and Device B. For configuration details, see Configuration Files in this section.
Add the interfaces for connecting Device C to Device A and Device B to Eth-Trunk 1. For configuration details, see Configuration Files in this section.

Configure an RBS.

# Configure an RBS on Device A.

<HUAWEI> system-view
[~HUAWEI] sysname DeviceA
[*DeviceA] remote-backup-service service1
[*DeviceA-rm-backup-srv-service1] peer 2.2.2.2 source 1.1.1.1 port 1025
[*DeviceA-rm-backup-srv-service1] commit
[~DeviceA-rm-backup-srv-service1] quit

# Configure an RBS on Device B.

<HUAWEI> system-view
[~HUAWEI] sysname DeviceB
[*DeviceB] remote-backup-service service1
[*DeviceB-rm-backup-srv-service1] peer 1.1.1.1 source 2.2.2.2 port 1025
[*DeviceB-rm-backup-srv-service1] commit
[~DeviceB-rm-backup-srv-service1] quit

Configure an RBP.

# Configure an RBP on Device A.

[~DeviceA] remote-backup-profile profile1
[*DeviceA-rm-backup-prf-profile1] backup-id 10 remote-backup-service service1
[*DeviceA-rm-backup-prf-profile1] commit
[~DeviceA-rm-backup-prf-profile1] quit

# Configure an RBP on Device B.

[~DeviceB] remote-backup-profile profile1
[*DeviceB-rm-backup-prf-profile1] backup-id 10 remote-backup-service service1
[*DeviceB-rm-backup-prf-profile1] commit
[~DeviceB-rm-backup-prf-profile1] quit

Configure a dual-device E-Trunk backup platform.

# Configure a dual-device E-Trunk 1 backup platform on Device A.

# Configure E-Trunk 1 on Device A.

[~DeviceA] e-trunk 1
[*DeviceA-e-trunk-1] peer-address 2.2.2.2 source-address 1.1.1.1
[*DeviceA-e-trunk-1] commit
[~DeviceA-e-trunk-1] quit

# Bind E-Trunk 1's member interface Eth-Trunk 1 to the RBP named profile1 on Device A.

[~DeviceA] remote-backup-profile profile1
[*DeviceA-rm-backup-prf-profile1] e-trunk 1 eth-trunk 1
[*DeviceA-rm-backup-prf-profile1] commit
[~DeviceA-rm-backup-prf-profile1] quit

# Enable the IGMP Report/Leave packet forwarding function on Device A.

[~DeviceA] igmp-snooping enable
[*DeviceA] interface Eth-Trunk 1
[*DeviceA-Eth-Trunk1] igmp-snooping backup-report forward
[*DeviceA-Eth-Trunk1] commit
[~DeviceA-Eth-Trunk1] quit

# Configure a dual-device E-Trunk 1 backup platform on Device B.

# Configure E-Trunk 1 on Device B.

[~DeviceB] e-trunk 1
[*DeviceB-e-trunk-1] peer-address 1.1.1.1 source-address 2.2.2.2
[*DeviceB-e-trunk-1] commit
[~DeviceB-e-trunk-1] quit

Bind E-Trunk 1's member interface Eth-Trunk 1 to the RBP named profile1 on Device B.

[~DeviceB] remote-backup-profile profile1
[*DeviceB-rm-backup-prf-profile1] e-trunk 1 eth-trunk 1
[*DeviceB-rm-backup-prf-profile1] commit
[~DeviceB-rm-backup-prf-profile1] quit

Enable IGMP Report/Leave packet forwarding function on Device B.

[~DeviceB] igmp-snooping enable
[*DeviceB] interface Eth-Trunk 1
[*DeviceB-Eth-Trunk1] igmp-snooping backup-report forward
[*DeviceB-Eth-Trunk1] commit
[~DeviceB-Eth-Trunk1] quit

(Optional) Create BFD sessions and bind them to E-Trunk.

# Create BFD sessions and bind the peer IP tracking session to E-Trunk on Device A.

[~DeviceA] bfd
[*DeviceA-bfd] quit
[*DeviceA] bfd bfd1 bind peer-ip default-ip interface Eth-Trunk 1
[*DeviceA-bfd-session-bfd1] quit
[*DeviceA] bfd bfd2 bind peer-ip 2.2.2.2
[*DeviceA-bfd-session-bfd2] discriminator local 10
[*DeviceA-bfd-session-bfd2] discriminator remote 80
[*DeviceA-bfd-session-bfd2] quit
[*DeviceA] e-trunk 1
[*DeviceA-e-trunk-1] e-trunk track bfd-session session-name bfd2
[*DeviceA-e-trunk-1] quit
[*DeviceA] commit

# Create BFD sessions and bind the peer IP tracking session to E-Trunk on Device B.

[~DeviceB] bfd
[*DeviceB-bfd] quit
[*DeviceB] bfd bfd1 bind peer-ip 1.1.1.1
[*DeviceB-bfd-session-bfd1] discriminator local 80
[*DeviceB-bfd-session-bfd1] discriminator remote 10
[*DeviceB-bfd-session-bfd1] quit
[*DeviceB] bfd bfd2 bind peer-ip default-ip interface Eth-Trunk 1
[*DeviceB-bfd-session-bfd2] quit
[*DeviceB] e-trunk 1
[*DeviceB-e-trunk-1] e-trunk track bfd-session session-name bfd1
[*DeviceB-e-trunk-1] quit
[*DeviceA] commit

Enable remote backup for IGMP snooping services.

# Enable remote backup for IGMP snooping services in the view of the RBP named profile1 on Device A.

[~DeviceA] remote-backup-profile profile1
[*DeviceA-rm-backup-prf-profile1] service-type igmp-snooping
[*DeviceA-rm-backup-prf-profile1] commit
[~DeviceA-rm-backup-prf-profile1] quit

# Bind the RBP to Device A's Eth-Trunk interface.

[~DeviceA] interface Eth-Trunk 1
[*DeviceA-Eth-Trunk1] remote-backup-profile profile1
[*DeviceA-Eth-Trunk1] commit
[~DeviceA-Eth-Trunk1] quit

# Enable remote backup for IGMP snooping services in the view of the RBP named profile1 on Device B.

[~DeviceB] remote-backup-profile profile1
[*DeviceB-rm-backup-prf-profile1] service-type igmp-snooping
[*DeviceB-rm-backup-prf-profile1] commit
[~DeviceB-rm-backup-prf-profile1] quit

# Bind the RBP to Device B's Eth-Trunk interface.

[~DeviceB] interface Eth-Trunk 1
[*DeviceB-Eth-Trunk1] remote-backup-profile profile1
[*DeviceB-Eth-Trunk1] commit
[~DeviceB-Eth-Trunk1] quit

Verify the configuration.

After completing the configuration, run the display remote-backup-profile command on Device A. The command output shows that the RBP named profile1 has been created and the master/backup protocol is E-Trunk.

<DeviceA> display remote-backup-profile profile1
 -----------------------------------------------
 Profile-Index        : 0x1001
 Profile-Name         : profile1
 Service              : igmp-snooping
 Remote-backup-service: service1
 Backup-ID            : 1
 track protocol       : E-TRUNK
     E-Trunk  ID      : 1
     Eth-trunk ID     : 1
 Interface            :
                        Eth-Trunk1
 Backup mode          : hot
 Slot-Number          : --
 Card-Number          : --
 Port-Number          : --
----------------------------------------------------------

Run the display remote-backup-profile command on Device B. The command output shows that the RBP named profile1 has been created and the master/backup protocol is E-Trunk.

<DeviceB> display remote-backup-profile profile1
 -----------------------------------------------
 Profile-Index        : 0x1001
 Profile-Name         : profile1
 Service              : igmp-snooping 
 Remote-backup-service: service1
 Backup-ID            : 1
 track protocol       : E-TRUNK
     E-Trunk  ID      : 1
     Eth-trunk ID     : 1
 Interface            :
                        Eth-Trunk1
 Backup mode          : hot
 Slot-Number          : --
 Card-Number          : --
 Port-Number          : --
----------------------------------------------------------

Run the display remote-backup-service command on Device A. The command output shows that the RBS named service1 has been created.

<DeviceA> display remote-backup-service service1
----------------------------------------------------------
 Service-Index    : 1
 Service-Name     : service1
 TCP-State        : Connected
 Peer-ip          : 2.2.2.2
 Source-ip        : 1.1.1.1
 TCP-Port         : 1025
 Track-BFD        : --
 Last up time     : 2017-03-12 06:43:17
----------------------------------------------------------

Run the display remote-backup-service command on Device B. The command output shows that the RBS named service1 has been created.

<DeviceB> display remote-backup-service service1
----------------------------------------------------------
 Service-Index    : 1
 Service-Name     : service1
 TCP-State        : Connected
 Peer-ip          : 1.1.1.1
 Source-ip        : 2.2.2.2
 TCP-Port         : 1025
 Track-BFD        : --
 Last up time     : 2017-03-12 06:43:54
 ----------------------------------------------------------

Configuration Files

Device A configuration file

#
sysname DeviceA
#
lacp e-trunk system-id 00e0-fc12-7890
#
igmp-snooping enable
#
bfd
#
e-trunk 1
 peer-address 2.2.2.2 source-address 1.1.1.1
 e-trunk track bfd-session session-name bfd2
#
remote-backup-service service1
 peer 2.2.2.2 source 1.1.1.1 port 1025
#
remote-backup-profile profile1
 service-type igmp-snooping  
 backup-id 10 remote-backup-service service1
 peer-backup hot
 e-trunk 1 eth-trunk 1
#
interface GigabitEthernet0/1/0
 undo shutdown
 eth-trunk 1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.0.0.1 255.255.255.0
#
 ip address 10.0.0.1 255.255.255.0
 mode lacp-static
 e-trunk 1
 igmp-snooping backup-report forward
 remote-backup-profile profile1
#
interface LoopBack1
 ip address 1.1.1.1 255.255.255.255
#
bfd bfd1 bind peer-ip default-ip interface Eth-Trunk 1
#
bfd bfd2 bind peer-ip 2.2.2.2
 discriminator local 10
 discriminator remote 80
#
ospf 1
 area 0.0.0.0 
  network 1.1.1.1 0.0.0.0
  network 10.0.0.0 0.0.0.255
#
return

Device B configuration file

#
sysname DeviceB
#
lacp e-trunk system-id 00e0-fc12-7890
#
igmp-snooping enable
#
bfd
#
e-trunk 1
 peer-address 1.1.1.1 source-address 2.2.2.2
 e-trunk track bfd-session session-name bfd1
#
remote-backup-service service1
 peer 1.1.1.1 source 2.2.2.2 port 1025
#
remote-backup-profile profile1
 service-type igmp-snooping  
 backup-id 10 remote-backup-service service1
 peer-backup hot
 e-trunk 1 eth-trunk 1
#
interface GigabitEthernet0/1/0
 undo shutdown
 eth-trunk 1
#
interface GigabitEthernet0/1/8
 undo shutdown
 ip address 10.0.0.2 255.255.255.0
#
 ip address 10.0.0.2 255.255.255.0
 mode lacp-static
 e-trunk 1
 igmp-snooping backup-report forward
 remote-backup-profile profile1
#
interface LoopBack1
 ip address 2.2.2.2 255.255.255.255
#
bfd bfd1 bind peer-ip 1.1.1.1
 discriminator local 80
 discriminator remote 10
#
bfd bfd2 bind peer-ip default-ip interface Eth-Trunk 1
#
ospf 1
 area 0.0.0.0 
  network 2.2.2.2 0.0.0.0
  network 10.0.0.0 0.0.0.255
 #
return

Device C configuration file

#
sysname DeviceC
#
interface GigabitEthernet0/1/0
 undo shutdown
 eth-trunk 1
#
interface GigabitEthernet0/1/8
 undo shutdown
 eth-trunk 1
#
return