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report indicates that the host wants to join the multicast group and receive packets from
all sources. The switch creates a
(*, G,V)
route in this case also.
Related
Documentation
Understanding Multicast VLAN Registration on J-EX Series Switches on page 2052
•
•
Example: Configuring IGMP Snooping on J-EX Series Switches on page 2055
•
Configuring IGMP Snooping (CLI Procedure) on page 2063
•
RFC 3171,
IANA Guidelines for IPv4 Multicast Address Assignments
at
http://tools.ietf.org/html/rfc3171
Understanding Multicast VLAN Registration on J-EX Series Switches
Multicast VLAN registration (MVR) allows you to efficiently distribute IPTV multicast
streams across an Ethernet ring-based Layer 2 network and reduce the amount of
bandwidth consumed by this multicast traffic.
In a standard Layer 2 network, a multicast stream received on one VLAN is never
distributed to interfaces outside that VLAN. If hosts in multiple VLANs request the same
multicast stream, a separate copy of that multicast stream is distributed to the requesting
VLANs.
MVR introduces the concept of a
multicast source VLAN
(MVLAN), which is created by
MVR and becomes the only VLAN over which IPTV multicast traffic flows throughout
the Layer 2 network. The J-EX Series Switch that is enabled for MVR selectively forward
IPTV multicast traffic from interfaces on the MVLAN (source interfaces) to hosts that
are connected to interfaces that are not part of the MVLAN. These interfaces are known
as
MVR receiver ports
. The MVR receiver ports can receive traffic from a port on the MVLAN
but cannot send traffic onto the MVLAN, and they remain in their own VLANs for
bandwidth and security reasons.
This topic includes:
•
How MVR Works
In many ways, MVR is similar to IGMP snooping. Both monitor IGMP join and leave
messages and build forwarding tables based on the media access control (MAC)
addresses of the hosts sending those IGMP messages. Whereas IGMP snooping operates
within a given VLAN to regulate multicast traffic, MVR can operate with hosts on different
VLANs in a Layer 2 network to selectively deliver IPTV multicast traffic to requesting
hosts, thereby reducing the amount of bandwidth needed to forward multicast traffic.
When you configure an MVLAN, you assign a range of multicast group addresses to it.
You then configure other VLANs to be MVR receiver VLANs, which receive multicast
streams from the MVLAN. The MVR receiver ports comprise all the interfaces that exist
on any of the MVR receiver VLANs. Interfaces that are on the MVLAN itself cannot be
MVR receiver ports for that MVLAN.
2052
Dell PowerConnect J-Series Ethernet Switch Complete Software Guide for Junos OS
Summary of Contents for PowerConnect J-EX8208
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Page 383: ...CHAPTER 21 Configuration Statements for Power Management 311 ...
Page 387: ...CHAPTER 22 Operational Mode Commands for Power Management 315 ...
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Page 581: ...CHAPTER 38 Operational Mode Commands for System Services 509 ...
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Page 631: ...CHAPTER 41 Configuration Statements for System Monitoring 559 ...
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Page 683: ...CHAPTER 42 Operational Mode Commands for System Monitoring 611 ...
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Page 907: ...CHAPTER 49 Operational Mode Commands for Virtual Chassis 835 ...
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Page 1061: ...CHAPTER 56 Operational Mode Commands for Interfaces 989 ...
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Page 1297: ...CHAPTER 63 Operational Mode Commands for Bridging and VLANs 1225 ...
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Page 1461: ...CHAPTER 69 Operational Mode Commands for Spanning Tree Protocols 1389 ...
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Page 1819: ...CHAPTER 74 Operational Commands for Layer 3 Protocols 1747 ...
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Page 2215: ...CHAPTER 80 Operational Mode Commands for IGMP Snooping and Multicast 2143 ...
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Page 2341: ...Figure 49 Topology for Configuration 2269 Chapter 82 Examples Access Control Configuration ...
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Page 2907: ...CHAPTER 106 Operational Mode Commands for Firewall Filters 2835 ...
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Page 3049: ...CHAPTER 112 Operational Mode Commands for CoS 2977 ...
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Page 3211: ...CHAPTER 125 Operational Mode Commands for MPLS 3139 ...
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Page 3603: ...CHAPTER 134 Operational Mode Commands for General Network Management and Monitoring 3531 ...
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