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The Thomson Gateway and Multicast Video Introduction

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The Thomson Gateway and Multicast Video Introduction. Intro. Multicast streams Bandwith reduction Only UDP Multicast ‘always-on’ IGMP (internet group management protocol) Protocol for multicast stream in order to reach their destination Class D address: 224.0.0.0-239.255.255.255 (1110).

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Presentation Transcript
intro
Intro
  • Multicast streams
    • Bandwith reduction
    • Only UDP
    • Multicast ‘always-on’
  • IGMP (internet group management protocol)
    • Protocol for multicast stream in order to reach their destination
    • Class D address: 224.0.0.0-239.255.255.255 (1110)
igmp basics
IGMP basics

Step 1

NB: 255=225

igmp basics1
IGMP basics

Step 2

NB: 255=225

igmp basics2
IGMP basics

Step 3

NB: 255=225

igmp versions
IGMP Versions
  • IGMP v1
    • Membership query
    • Membership report
  • IGMP v2
    • Membership query
    • V2 Membership report (Fast Leave)
    • Leave group
    • V1 Membership report
  • IGMP v3
    • Membership query
    • V3 Membership report (Explicit Host Tracking)
    • V2 Leave group
    • V2 Membership report
    • V2 Leave group
    • V1 Membership report
definitions
Definitions
  • IGMP Proxy
    • Terminates LAN side IGMP
    • Initiates IGMP on WAN side
    • Port-based bridge group
  • IGMP Snooping
    • Layer 2 switch uses Layer 3 IP header for intelligent forwarding
    • No traffic is send on parts were no IGMP is required
bridged fl off eht off 1 port

I DO!

LEAVE

WHO WANTS X?

BRIDGED, FL=OFF EHT=OFF 1 PORT

FL=OFF EHT=OFF

A WILL NOT LISTEN ANYMORE

bridged fl off eht off 2 ports

I DO!

LEAVE

WHO WANTS X?

BRIDGED, FL=OFF EHT=OFF 2 PORTS

FL=OFF EHT=OFF

bridged fl on eht off 1 port

I DO!

LEAVE

WHO WANTS X?

BRIDGED, FL=ON EHT=OFF 1 PORT

FL=ON EHT=OFF

A WILL NOT LISTEN ANYMORE

bridged fl on eht off 2 ports

I DO!

LEAVE

WHO WANTS X?

BRIDGED, FL=ON EHT=OFF 2 PORTS

FL=ON EHT=OFF

bridged fl on eht on 1 port

I DO!

LEAVE

WHO WANTS X?

BRIDGED, FL=ON EHT=ON1 PORT

FL=ON EHT=ON

bridged fl on eht on 2 ports

I DO!

LEAVE

WHO WANTS X?

BRIDGED, FL=ON EHT=ON2 PORTS

FL=ON EHT=ON

routed proxy fl on eht off

LEAVE

JOIN

I DO!

LEAVE

WHO WANTS X?

ROUTED, PROXY FL=ON EHT=OFF

FL=ON EHT=ON

routed proxy fl off eht off

I DO!

LEAVE

WHO WANTS X?

ROUTED, PROXY FL=OFF EHT=OFF

FL=ON EHT=ON

routed proxy fl off eht on

I DO!

LEAVE

WHO WANTS X?

ROUTED, PROXY FL=OFF EHT=ON

FL=ON EHT=ON

routed proxy fl on eht on

I DO!

LEAVE

WHO WANTS X?

ROUTED, PROXY FL=ON EHT=ON

FL=ON EHT=ON

sorts of network architectures
Sorts of Network Architectures
  • Bridged
    • IGMP Snooping
  • Routed
    • IGMP Proxy
    • IGMP Snooping
    • Flexiport
  • Hybrid
    • IGMP Snooping
    • Separate VLAN
    • Flexiport
flexiport
Flexiport
  • Flexiport
    • Dynamic bridge group mapping based on MAC address
    • Selection-based on MAC address or DHCP options
advantages vs disadvantages

Easy to configure

  • Transparent for STB
  • Easy to configure
  • Transparent for STB
  • Multiple PCs using NAT
  • Easy to configure
  • Multiple PCs using NAT
  • LAN-to-LAN connectivity
  • Multiple PCs result in multiple IP addresses
  • No LAN-to-LAN connectivity
  • No LAN-to-LAN connectivity
  • Requires NAT-friendly STB
Advantages vs. Disadvantages
  • Bridged
  • Hybrid
  • Routed
enable igmp proxy
Enable IGMP proxy

:igmp proxy config state enabled

:igmp proxy ifconfig intf=LocalNetwork state=downstream exptrack=enabled fastleave=enabled:igmp proxy ifconfig intf=ipVideo state=upstream

enable igmp snooping
Enable IGMP snooping

:eth bridge igmpsnooping config state=enabled

:eth bridge ifconfig intf=ethport1 igmpsnooping=enabled

:eth bridge ifconfig intf=ethport2 igmpsnooping=enabled

:eth bridge ifconfig intf=ethport3 igmpsnooping=enabled

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