Example: Configuring Multicast VLAN Registration on EX Series Switches Without ELS

Topology

You can configure MVR to operate in one of two modes: transparent mode (the default mode) or proxy mode. Both modes enable MVR to forward only one copy of a multicast stream to the Layer 2 network.

In transparent mode, the switch receives one copy of each IPTV multicast stream and then replicates the stream only to those hosts that want to receive it, while forwarding all other types of multicast traffic without modification. Figure 1 shows how MVR operates in transparent mode.

In proxy mode, the switch acts as a proxy for the IGMP multicast router in the MVLAN for MVR group memberships established in the MVR receiver VLANs and generates and sends IGMP packets into the MVLAN as needed. Figure 2 shows how MVR operates in proxy mode.

This example shows how to configure MVR in both transparent mode and proxy mode on an EX Series switch or the QFX Series. The topology includes a video server that is connected to a multicast router, which in turn forwards the IPTV multicast traffic in the MVLAN to the Layer 2 network.

Figure 1 shows the MVR topology in transparent mode. Interfaces P1 and P2 on Switch C belong to service VLAN s0 and MVLAN mv0. Interface P4 of Switch C also belongs to service VLAN s0. In the upstream direction of the network, only non-IPTV traffic is being carried in individual customer VLANs of service VLAN s0. VLAN c0 is an example of this type of customer VLAN. IPTV traffic is being carried on MVLAN mv0. If any host on any customer VLAN connected to port P4 requests an MVR stream, Switch C takes the stream from VLAN mv0 and replicates that stream onto port P4 with tag mv0. IPTV traffic, along with other network traffic, flows from port P4 out to the Digital Subscriber Line Access Multiplexer (DSLAM) D1.

Figure 1: MVR Topology in Transparent Mode

Figure 2 shows the MVR topology in proxy mode. Interfaces P1 and P2 on Switch C belong to MVLAN mv0 and customer VLAN c0. Interface P4 on Switch C is an access port of customer VLAN c0. In the upstream direction of the network, only non-IPTV traffic is being carried on customer VLAN c0. Any IPTV traffic requested by hosts on VLAN c0 is replicated untagged to port P4 based on streams received in MVLAN mv0. IPTV traffic flows from port P4 out to an IPTV-enabled device in Host H1. Other traffic, such as data and voice traffic, also flows from port P4 to other network devices in Host H1.

Figure 2: MVR Topology in Proxy Mode

For information on VLAN tagging, see the topic for your platform:

• Understanding Bridging and VLANs on Switches

Procedure

• CLI Quick Configuration
• Step-by-Step Procedure
• Results

set vlan mv0 data-forwarding source groups 225.10.0.0/16
set vlan v2 data-forwarding receiver source-vlans mv0
set vlan v2 data-forwarding receiver install
set vlan mv0 proxy source-address 10.1.1.1

[edit protocols igmp-snooping]
user@switch# show 
vlan mv0 {
    proxy {
        source-address 10.1.1.1;
    }
    data-forwarding {
        source { 
            groups 225.10.0.0/16;
        }
    }
}
vlan v2 {
    data-forwarding {
        receiver {
            source-vlans mv0;
            install;
        }
    }
}