Multicast Features
NOTE:
Multicast routing is supported on secondary IP addresses; it is not supported on IPv6.
NOTE:
Multicast routing is supported across default and non-default virtual routing and forwarding (VRFs).
The Dell Networking operating system (OS) supports the following multicast protocols:
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Internet Group Management Protocol (IGMP)
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Multicast Source Discovery Protocol (MSDP)
Topics:
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Understanding Multicast Traceroute (mtrace)
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Printing Multicast Traceroute (mtrace) Paths
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Enabling IP Multicast
Before enabling any multicast protocols, you must enable IP multicast routing. To enable multicast routing, use the following command.
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Enable multicast routing.
CONFIGURATION mode
ip multicast-routing
Implementation Information
Because protocol control traffic in the Dell Networking OS is redirected using the MAC address, and multicast control traffic and multicast
data traffic might map to the same MAC address, the Dell Networking OS might forward data traffic with certain MAC addresses to the
CPU in addition to control traffic.
As the upper five bits of an IP Multicast address are dropped in the translation, 32 different multicast group IDs map to the same Ethernet
address. For example, 224.0.0.5 is a known IP address for open shortest path first (OSPF) that maps to the multicast MAC address
01:00:5e:00:00:05. However, 225.0.0.5, 226.0.0.5, and so on, map to the same multicast MAC address. The Layer 2 forwarding information
base (FIB) alone cannot differentiate multicast control traffic and multicast data traffic with the same address, so if you use IP address
225.0.0.5 for data traffic, both the multicast data and OSPF control traffic match the same entry and are forwarded to the CPU. Therefore,
do not use well-known protocol multicast addresses for data transmission, such as the following:
Protocol
Ethernet Address
OSPF
01:00:5e:00:00:05
34
592
Multicast Features
Содержание S4048T-ON
Страница 1: ...Dell Configuration Guide for the S4048 ON System 9 11 2 1 ...
Страница 148: ...Figure 10 BFD Three Way Handshake State Changes 148 Bidirectional Forwarding Detection BFD ...
Страница 251: ...Dell Control Plane Policing CoPP 251 ...
Страница 363: ... RPM Synchronization GARP VLAN Registration Protocol GVRP 363 ...
Страница 511: ...Figure 64 Inspecting the LAG Configuration Link Aggregation Control Protocol LACP 511 ...
Страница 512: ...Figure 65 Inspecting Configuration of LAG 10 on ALPHA 512 Link Aggregation Control Protocol LACP ...
Страница 515: ...Figure 67 Inspecting a LAG Port on BRAVO Using the show interface Command Link Aggregation Control Protocol LACP 515 ...
Страница 516: ...Figure 68 Inspecting LAG 10 Using the show interfaces port channel Command 516 Link Aggregation Control Protocol LACP ...
Страница 558: ...Figure 84 Configuring Interfaces for MSDP 558 Multicast Source Discovery Protocol MSDP ...
Страница 559: ...Figure 85 Configuring OSPF and BGP for MSDP Multicast Source Discovery Protocol MSDP 559 ...
Страница 560: ...Figure 86 Configuring PIM in Multiple Routing Domains 560 Multicast Source Discovery Protocol MSDP ...
Страница 564: ...Figure 88 MSDP Default Peer Scenario 2 564 Multicast Source Discovery Protocol MSDP ...
Страница 565: ...Figure 89 MSDP Default Peer Scenario 3 Multicast Source Discovery Protocol MSDP 565 ...
Страница 729: ...protocol spanning tree pvst no disable vlan 300 bridge priority 4096 Per VLAN Spanning Tree Plus PVST 729 ...
Страница 841: ...Figure 115 Single and Double Tag TPID Match Service Provider Bridging 841 ...
Страница 842: ...Figure 116 Single and Double Tag First byte TPID Match 842 Service Provider Bridging ...