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CCIE #29033

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Sunday, February 13, 2011

Quick Notes - Multicast IPv4 Addressing

Class D - 224.0.0.0 - 239.255.255.255

Special Purpose Ranges

224.0.0.0 - 224.0.0.255 (Reserved link-local)
224.0.2.0 - 238.255.255.255 (Globally Scoped Addresses)
232.0.0.0 - 232.255.255.255 (Source-specific Multicast Addresses)
233.0.0.0 - 233.255.255.255 (GLOP Addresses)
239.0.0.0 - 239.255.255.255 (Administratively Scoped Addresses)

Reserved Link Local
-OSPF 224.0.0.5 and 224.0.0.6
-RIPv2 224.0.0.9
-EIGRP 224.0.0.10
-All multicast hosts 224.0.0.1
-All multicast routers 224.0.0.2

Globally Scoped
-General purpose applications and extends beyond the local AS

Source-Specific Multicast (SSM)
-Used with IGMPv3, allows a host to specify the source of the multicast traffic

GLOP
-Globally unique multicast based on AS numbers

Limited Scope
-Like RFC 1918, this does not leave the AS and is considered a private address range
Posted by Packets Analyzed at 5:13 PM
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