Troubleshooting

Efficient Video Distribution Networks with.Multicast: IGMP Querier and PIM-DM
5
IGMP snooping and static multicast groups accomplish the same task. One is dynamic; requiring less
setup and maintenance, while the other is static; requiring more setup and maintenance time. This
paper only discusses how to set up the dynamic IGMP snooping feature with and without a PIM router.
If it is desired to set up Static multicast groups, please see the documentation that came with your
particular switch for instructions.
Scenarios in this Document
This document provides instructions for setting up two scenarios. In the first scenario, the desire is to
keep the multicast network Layer 2 switched only, and therefore the IGMP snooping querier is used to
perform the query functions of a Layer 3 multicast router.
The second scenario explores PIM and IGMP enabled in a Layer 3 network with IP multicast routing
between multiple VLANs. In this case, the IP multicast router acts as the IGMP querier.
Firmware Versions
The firmware used on the PowerConnect 8100 switches in these scenarios was version 5.1.0.0. Only
attempt these setups after updating firmware to 5.1.x.x or later on each participating switch. As
always, it is best practice to update all BIOS code on computers and use the latest NIC drivers.
Scenario 1: Layer 2 Video Distribution on a Single VLAN (Using IGMP Querier)
The first scenario for this paper consists of three PowerConnect switches, a video server, and multiple
clients to receive the streaming video. The particular setup for generating this document contains a
Dell PowerEdge R815 (Video Server), three Dell PowerConnect 8132 switches, and three Dell laptops for
use as multicast receivers (Figure 2). VLC Media Player is used on a Windows server and Windows
clients to generate and receive the multicast stream. The server is Windows Server 2008 R2
Enterprise, and clients include both Windows 7 and Windows XP.
This white paper includes instructions on how to set up and configure the hardware, how to download
and install the VLC Media Player, and then how to test the entire setup using VLC.
Single VLAN Video Distribution Using IGMP Querier Figure 1.
Video
Server
VLAN 10 with
IP addr: 10.0.0.1 /24
VLAN 10 with
IP addr: 10.0.0.2 /24
VLAN 10 with
IP addr: 10.0.0.3 /24
IP addr: 10.0.0.50 /24
Client
IP addr: 10.0.0.52 /24
Enable IGMP
snooping and IGMP
querier
Enable IGMP
snooping
Client
IP addr: 10.0.0.51 /24
Client
IP addr: 10.0.0.53 /24
Enable IGMP
snooping