Example for Configuring Dual-Device IGMP Hot Backup

This section provides an example for configuring dual-device IGMP hot backup in a master/backup E-Trunk scenario. After dual-device IGMP 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, an E-Trunk backup group is configured 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 IGMP packets to Device A through the up link. 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 up link, ensuring IGMP service continuity.

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

Interfaces 1 through 3 in this example represent GE 0/1/1, GE 0/1/2, and GE 0/1/3, respectively.

To ensure that IGMP services are not interrupted during a master/backup E-Trunk switchover, configure dual-device IGMP hot backup on Device A and Device B. After the configuration is complete, Device B synchronizes IGMP 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 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. LACP system priority of Device A: 100.
E-Trunk ID on Device A and Device B: 1.
Device A's Loopback0 interface IP address is: 1.1.1.1/32; Device B's Loopback0 interface IP address: 3.3.3.3/32; TCP port number: 1025.
Device A's IP address: 10.0.13.1/24; Device B's IP address: 10.0.13.3/24.
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 3.3.3.3 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 3.3.3.3 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 3.3.3.3 source-address 1.1.1.1
[*DeviceA-e-trunk-1] commit
[~DeviceA-e-trunk-1] quit
[~DeviceA] lacp e-trunk system-id 00e0-fc12-3455
[~DeviceA] commit

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

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

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

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

[~DeviceA] multicast routing-enable
[*DeviceA] interface Eth-Trunk 1
[*DeviceA-Eth-Trunk1] pim sm
[*DeviceA-Eth-Trunk1] igmp enable
[*DeviceA-Eth-Trunk1] mode lacp-static
[*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 3.3.3.3
[*DeviceB-e-trunk-1] commit
[~DeviceB-e-trunk-1] quit
[~DeviceB] lacp e-trunk system-id 00e0-fc12-3456 
[*DeviceB] commit

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

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

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

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

[~DeviceB] multicast routing-enable
[*DeviceB] interface Eth-Trunk 1
[*DeviceB-Eth-Trunk1] pim sm
[*DeviceB-Eth-Trunk1] igmp enable
[*DeviceB-Eth-Trunk1] mode lacp-static
[*DeviceB-Eth-Trunk1] commit
[~DeviceB-Eth-Trunk1] quit

Enable remote backup for IGMP services.

# Enable remote backup for IGMP 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
[*DeviceA-rm-backup-prf-profile1] commit
[~DeviceA-rm-backup-prf-profile1] quit

# Enable remote backup for IGMP 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
[*DeviceB-rm-backup-prf-profile1] commit
[~DeviceB-rm-backup-prf-profile1] quit

Verify the configuration.

After completing the configuration, run the display remote-backup-profile command on DeviceA. 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        : 0x1000
 Profile-Name         : profile1
 Service              : igmp
 Remote-backup-service: service1
 Backup-ID            : 10
 track protocol       : E-TRUNK
     E-Trunk  ID      : 1
     Eth-trunk ID     : 1
 Interface            :
                        Eth-Trunk1
 Forwarding Configured: Slave Forwarding
 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        : 0x1000
 Profile-Name         : profile1
 Service              : igmp
 Remote-backup-service: service1
 Backup-ID            : 10
 track protocol       : E-TRUNK
     E-Trunk  ID      : 1
     Eth-trunk ID     : 1
 Interface            :
                        Eth-Trunk1
 Forwarding Configured: Slave Forwarding
 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          : 3.3.3.3
 Source-ip        : 1.1.1.1
 TCP-Port         : 1025
 Track-BFD        : --
 SSL-Policy-Name  : --
 SSL-State        : --
 Last up time     : 2018-05-29 03:21:36
----------------------------------------------------------

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        : 3.3.3.3
 TCP-Port         : 1025
 Track-BFD        : --
 SSL-Policy-Name  : --
 SSL-State        : --
 Last up time     : 2018-05-29 03:21:36
----------------------------------------------------------

Run the display eth-trunk command on Device A. The command output shows the status of Eth-Trunk interface.

<DeviceA> display eth-trunk
Eth-Trunk1's state information is:
(h): high priority
(r): reference port
Local:
LAG ID: 1 WorkingMode: STATIC
Preempt Delay: Disabled Hash arithmetic: According to flow
System Priority: 32768 System ID: 00e0-fc12-3455(Local)
Least Active-linknumber: 1 Max Active-linknumber: 16
Operate status: up Number Of Up Ports In Trunk: 1
Timeout Period: Slow
PortKeyMode: Auto
--------------------------------------------------------------------------------
ActorPortName Status PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet0/1/2 (hr) Selected 1GE 32768 1 305 10111100 1
Partner:
--------------------------------------------------------------------------------
ActorPortName SysPri            SystemID         PortPri PortNo PortKey  PortState
GigabitEthernet0/1/2 32768      00e0-fc12-3455  32768     1      305     10111100

Run the display eth-trunk command on Device B. The command output shows the status of Eth-Trunk interface.

<DeviceB> display eth-trunk
Eth-Trunk1's state information is:
(h): high priority
(r): reference port
Local:
LAG ID: 1 WorkingMode: STATIC
Preempt Delay: Disabled Hash arithmetic: According to flow
System Priority: 32768 System ID: 00e0-fc12-3456(Local)
Least Active-linknumber: 1 Max Active-linknumber: 16
Operate status: down Number Of Up Ports In Trunk: 0
Timeout Period: Slow
PortKeyMode: Auto
--------------------------------------------------------------------------------
ActorPortName Status PortType PortPri PortNo PortKey PortState Weight
GigabitEthernet0/1/3(hr) Unselect 1GE 32768 32769 305 10110000 1
Partner:
--------------------------------------------------------------------------------
ActorPortName          SysPri  SystemID       PortPri PortNo PortKey PortState
GigabitEthernet0/1/3   32768   00e0-fc12-3456 32768    2      305     10100000

Configuration Files

Device A configuration file

#
sysname DeviceA
#
multicast routing-enable
#
e-trunk 1
 peer-address 3.3.3.3 source-address 1.1.1.1
#
lacp priority 100
lacp e-trunk system-id 00e0-fc12-3455
#
remote-backup-service service1
 peer 3.3.3.3 source 1.1.1.1 port 1025
#
remote-backup-profile profile1
 service-type igmp
 backup-id 10 remote-backup-service service1
 peer-backup hot
 e-trunk 1 eth-trunk 1
#
interface Eth-Trunk1
 ip address 10.0.15.1 255.255.255.0
 pim sm
 igmp enable
 mode lacp-static
 e-trunk 1
 remote-backup-profile profile1
#
interface GigabitEthernet0/1/1
 undo shutdown
 ip address 10.0.13.1 255.255.255.0
 pim sm
#
interface GigabitEthernet0/1/2
 undo shutdown
 eth-trunk 1
#
interface GigabitEthernet0/1/3
 undo shutdown
 ip address 10.0.12.1 255.255.255.0
 pim sm
#
interface Loopback0
 ip address 1.1.1.1 255.255.255.255
#
interface NULL0
#
ospf 1
 area 0.0.0.0
  network 1.1.1.1 0.0.0.0
  network 10.0.12.0 0.0.0.255
  network 10.0.13.0 0.0.0.255
  network 10.0.15.0 0.0.0.255
#
pim
 static-rp 2.2.2.2
#
return

Device B configuration file

#
sysname DeviceB
#
multicast routing-enable
#
e-trunk 1
 peer-address 1.1.1.1 source-address 3.3.3.3
#
lacp e-trunk system-id 00e0-fc12-3456
#
remote-backup-service service1
 peer 1.1.1.1 source 3.3.3.3 port 1025
#
remote-backup-profile profile1
 service-type igmp
 backup-id 10 remote-backup-service service1
 peer-backup hot
 e-trunk 1 eth-trunk 1
#
interface Eth-Trunk1
 ip address 10.0.35.3 255.255.255.0
 pim sm
 igmp enable
 mode lacp-static
 e-trunk 1
 remote-backup-profile profile1
#
interface GigabitEthernet0/1/1
 undo shutdown
 ip address 10.0.13.3 255.255.255.0
 pim sm
#
interface GigabitEthernet0/1/2
 undo shutdown
 ip address 10.0.23.3 255.255.255.0
 pim sm
#
interface GigabitEthernet0/1/3
 undo shutdown
 eth-trunk 1
#
interface Loopback0
 ip address 3.3.3.3 255.255.255.255
#
interface NULL0
#
ospf 1
 area 0.0.0.0
  network 3.3.3.3 0.0.0.0
  network 10.0.13.0 0.0.0.255
  network 10.0.23.0 0.0.0.255
  network 10.0.35.0 0.0.0.255
#
pim
 static-rp 2.2.2.2
#
return

Device C configuration file

#
sysname DeviceC
#
vlan batch 100
#
multicast routing-enable
#
interface Eth-Trunk1
 portswitch
 port link-type access
 port default vlan 100
 mode lacp-static
#
interface GigabitEthernet0/1/1
 portswitch
 undo shutdown
 port link-type access
 port default vlan 100
#
interface GigabitEthernet0/1/2
 undo shutdown
 eth-trunk 1
#
interface GigabitEthernet0/1/3
 undo shutdown
 eth-trunk 1
#
interface Loopback0
 ip address 5.5.5.5 255.255.255.255
#
interface NULL0 
#
ospf 1
 area 0.0.0.0
  network 5.5.5.5 0.0.0.0
#
return

Device D configuration file

#
sysname DeviceD
#
multicast routing-enable
#               
interface GigabitEthernet0/1/1
 undo shutdown
 ip address 10.0.5.2 255.255.255.0
 pim sm
#
interface GigabitEthernet0/1/2
 undo shutdown
 ip address 10.0.23.2 255.255.255.0
 pim sm
#
interface GigabitEthernet0/1/3
 undo shutdown
 ip address 10.0.12.2 255.255.255.0
 pim sm
#
interface Loopback0
 ip address 2.2.2.2 255.255.255.255
#
interface NULL0
#
ospf 1
 area 0.0.0.0
  network 2.2.2.2 0.0.0.0
  network 10.0.5.0 0.0.0.255
  network 10.0.12.0 0.0.0.255
  network 10.0.23.0 0.0.0.255
#
pim
 static-rp 2.2.2.2
#
return