How to Configure MVR on an RG-CS83 Switch？

Keywords:

MVR, SVGL
1. Device Model and Firmware

Device Type	Device Model	Firmware Version
Ruijie  switch	RG-CS83-24GT4XS	RGOS 12.6(3)B1403

2. Overview

• IGMP snooping can forward multicast traffic only in the same VLAN. If multicast traffic needs to be forwarded to different VLANs, the multicast source must send multicast traffic to different VLANs. To save uplink bandwidth and reduce the burden on multicast sources, Multicast VLAN Registration (MVR) was developed. MVR can copy multicast traffic received from an MVR VLAN and forward it to the VLAN where the user resides.
• It corresponds to IGMP Snooping Functions in SVGL mode on RG-CS series switches.
  

3. Configuration Procedure

3.1 Configuration Requirements

In the multicast network shown in Figure 1, the router (Device A) connects to the user network through the switch (Device B). IGMP snooping is enabled on Device A,which is directly connected to the multicast source. The multicast source sends data to the multicast group 225.0.0.10. Host A, Host B, and Host C are in VLAN 101, VLAN 102, and VLAN 103, respectively, and all three hosts have joined the multicast group 225.0.0.10. As a result, Host A, Host B, and Host C can receive multicast data sent by the multicast source to this group.
3.2 Topology


3.3 Configuration Notes

• Configure basic IGMP snooping functions on Device B.
• Configure the IP addresses, VLANs, and unicast routing protocols of the network nodes to ensure reachability of the network nodes using unicast routing.
• Enable multicast routing and PIM-SM related functions on Device A.
• Enable IGMP snooping and run the SVGL mode on Device B.
• Configure the multicast groups associated wit the IGMP snooping SVGL mode on Device B and specify the shared VLAN and sub VLANs.
  

3.4 Configuration Examples

1. Configure the IP addresses, VLANs, and unicast routing protocols of the network nodes to ensure reachability of the network nodes using unicast routing. Configure the IP address and unicast routing protocol on Device A.

DeviceA>enable   DeviceA#configure terminal   DeviceA(config)# interface GigabitEthernet 0/47   DeviceA(config-if-GigabitEthernet 0/47)# no switchport   DeviceA(config-if-GigabitEthernet 0/47)# ip address 10.100.12.1 255.255.255.0   DeviceA(config-if-GigabitEthernet 0/47)# exit   DeviceA(config)# vlan 104   DeviceA(config)# interface vlan 104   DeviceA(config-if-VLAN 104)# ip address 10.100.11.2 255.255.255.0   DeviceA(config-if-VLAN 104)# exit   DeviceA(config)# interface GigabitEthernet 0/48   DeviceA(config-if-GigabitEthernet 0/48)# switchport mode trunk   DeviceA(config-if-GigabitEthernet 0/48)# switchport trunk native vlan 104   DeviceA(config-if-GigabitEthernet 0/48)# exit   DeviceA(config)# router ospf 49   DeviceA(config-router)# network 10.100.11.0 0.0.0.255 area 0   DeviceA(config-router)# network 10.100.12.0 0.0.0.255 area 0   DeviceA(config-router)# exit

Configure the IP address, VLAN, and unicast routing protocol on Device B.

DeviceB> enable   DeviceB# configure terminal   DeviceB(config)# vlan range 101-104   DeviceB(config-vlan-range)# exit   DeviceB(config)# interface VLAN 101   DeviceB(config-if-VLAN 101)# ip address 10.100.101.1 255.255.255.0   DeviceB(config-if-VLAN 101)# exitDeviceB(config)# interface VLAN 102   DeviceB(config-if-VLAN102)# ip address 10.100.102.1 255.255.255.0   DeviceB(config-if-VLAN 102)# exit   DeviceB(config)# interface VLAN 103   DeviceB(config-if-VLAN 103)#ip address 10.100.103.1 255.255.255.0   DeviceB(config-if-VLAN 103)# exit   DeviceB(config)# interface VLAN 104   DeviceB(config-if-VLAN 104)# ip address 10.100.11.1 255.255.255.0   DeviceB(config-if-VLAN 104)# exit   DeviceB(config)# interface GigabitEthernet 0/18   DeviceB(config-if-GigabitEthernet 0/18)# switchport mode trunk   DeviceB(config-if-GigabitEthernet 0/18)# switchport trunk native vlan 104   DeviceB(config-if-GigabitEthernet 0/18)# exit   DeviceB(config)# interface GigabitEthernet 0/19   DeviceB(config-if-GigabitEthernet 0/19)# switchport access vlan 103   DeviceB(config-if-GigabitEthernet 0/19)# exit   DeviceB(config)# interface GigabitEthernet 0/20   DeviceB(config-if-GigabitEthernet 0/20)# switchport access vlan 101   DeviceB(config-if-GigabitEthernet 0/20)# exit   DeviceB(config)# interface GigabitEthernet 0/22   DeviceB(config-if-GigabitEthernet 0/22)# switchport access vlan 102   DeviceB(config-if-GigabitEthernet 0/22)# exit   DeviceB(config)# router ospf 49   DeviceB(config-router)# network 10.100.11.0 0.0.0.255 area 0   DeviceB(config-router)# network 10.100.101.0 0.0.0.255 area 0   DeviceB(config-router)# network 10.100.102.0 0.0.0.255 area 0   DeviceB(config-router)# network 10.100.103.0 0.0.0.255 area 0   DeviceB(config-router)# exit

DeviceA(config)# ip multicast-routing   DeviceA(config)# interface GigabitEthernet 0/47   DeviceA(config-if-GigabitEthernet 0/47)# ip pim sparse-mode   DeviceA(config-if-GigabitEthernet 0/47)# exit   DeviceA(config)# interface vlan 104   DeviceA(config-if-VLAN 104)# ip pim sparse-mode   DeviceA(config-if-VLAN 104)# exit   DeviceA(config)# ip pim bsr-candidate GigabitEthernet 0/47   DeviceA(config)# ip pim rp-candidate GigabitEthernet 0/47

DeviceB> enable   DeviceB# configure terminal   DeviceB(config)# ip igmp snooping svgl

DeviceB> enable   DeviceB# configure terminal   DeviceB(config)# ip igmp profile 1   DeviceB(config-profile)# permit   DeviceB(config-profile)# range 224.1.1.1 238.1.1.1   DeviceB(config-profile)# exit   DeviceB(config)# ip igmp snooping svgl profile 1   DeviceB(config)# ip igmp snooping svgl vlan 104   DeviceB(config)# ip igmp snooping svgl subvlan 101-103

Send packets from the multicast source (10.100.12.2) to multicast group G(225.0.0.10). Enable Host A, Host B, and Host C to join G.
Run the show ip igmp snooping gda-table command on Device B to display the IGMP snooping forwarding entry and check whether the member port list contains GigabitEthernet 0/19, GigabitEthernet 0/20, andGigabitEthernet 0/22.

DeviceB# show ip igmp snooping gda-table   Multicast Switching Cache Table     D: DYNAMIC     S: STATIC     M: MROUTE   (*, 225.0.0.10, 104):    VLAN(104) 1 OPORTS:     GigabitEthernet 0/18(M)    VLAN(102) 1 OPORTS:     GigabitEthernet 0/22(D)    VLAN(103) 1 OPORTS:     GigabitEthernet 0/19(D)    VLAN(101) 1 OPORTS:     GigabitEthernet 0/20(D)

Run the show ip igmp snooping command on Device B and check whether the IGMP snooping working mode is SVGL.

DeviceB# show ip igmp snooping   IGMP Snooping running mode: SVGL   IGMP Snooping L2-entry-limit: 64000   SVGL vlan: 104   SVGL profile number: 1   IGMP Snooping SVGL subvlan: 101-103   Source port check: Disable   Source ip check: Disable   IGMP Fast-Leave: Disable   IGMP Report suppress: Disable   IGMP Global Querier: Disable   IGMP Preview: Disable   IGMP Tunnel: Disable   IGMP Snooping version: 2   IGMP Preview group aging time: 60(Seconds)   Dynamic Mroute Aging Time: 300(Seconds)   Dynamic Host Aging Time: 260(Seconds)