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A multicast address is a logical identifier for a group of hosts in a computer network that are available to process ... IP multicast address range ... 224.0.0.2 The ...
All routers (224.0.0.2) ... The Source Address [i] fields are a vector of n IP unicast addresses, where n is the value in the Number of Sources (N) field.
The ICMP Router Advertisement message is sent by a router on the local area network to announce its IP address as available for routing. When a host boots up, it sends solicitation messages to IP multicast address 224.0.0.2. [4] In response, one or more routers may send advertisement messages.
LDP and tLDP discovery runs on UDP port 646 and the session is built on TCP port 646. During the discovery phase hello packets are sent on UDP port 646 to the 'all routers on this subnet' group multicast address (224.0.0.2). However, tLDP unicasts the hello packets to the targeted neighbor's address.
base address all-systems.mcast.net ... 224.0.0.2: all routers in the local networks dvmrp.mcast.net: 224.0.0.4: all routers for the Distance Vector Multicast Routing ...
In SSM, an IP datagram is transmitted by a source S to an SSM destination address G, and receivers can receive this datagram by subscribing to channel (S,G). See informational RFC 3569. PIM-SM is commonly used in IPTV systems for routing multicast streams between VLANs, subnets or local area networks. [5]
The primary router with the highest configured priority will act as a virtual router with a pre-defined gateway IP address and will respond to the ARP or ND request from machines connected to the LAN with a virtual MAC address. If the primary router should fail, the router with the next-highest priority would take over the gateway IP address ...