By William R. Parkhurst
Sizzling ebook on a sizzling technology--Cisco's new new release of routers is designed to deal with IP Multicasting, the most important to video conferencing and groupware. step by step assistance on tips on how to installation and troubleshoot multicasting in a Cisco Router atmosphere. entire insurance of present and destiny intranet multicast routing protocols, interoperability framework, net crew administration protocol, and extra. From the revered writer of McGraw-Hill's Cisco Router OSPF layout and Configuration advisor.
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Additional resources for Cisco Multicast Routing And Switching
The byte 225 is represented in binary as 1110 0001. The upper four bits do not change because they are always 1110 for a Class D IP multicast address. 225 65 10 154 E1 41 0A 9A 0000 1010 1001 1010 1110 0001 0 100 0001 a. Class D IP address represented in decimial, hexadecimal, and binary. The last 23 bits ae used to form the multicast ethernet address. 01 00 5E 0000 0001 0000 0000 0101 1110 00 0 000 0000 00 00 0000 0000 0000 0000 b. Host multicast ethernet address template represented in hexadecimal and binary.
The third and last function specifies what a host should do when sending a multicast packet to a group of which the host is also a member. The transmitted multicast packet should be looped back to the host and the received packet that the host just sent should be discarded. Ethernet Multicast Addressing The datalink layer also requires additional functionality for mapping Class D IP addresses to ethernet MAC addresses. The procedure outlined in the RFC also applies to FDDI, but a procedure is not specified for a token ring.
The first required function concerns the TTL field in the IGMP packet. If a TTL value is not explicitly set, then the default TTL value should be set to 1 to prevent the IGMP traffic from leaving the host's network. The second required function is for hosts that are connected to more than one network. The host should only transmit multicast traffic on one of the directly connected networks because, in the multicasting paradigm, routers have the responsibility of forwarding multicast traffic to other networks.
Cisco Multicast Routing And Switching by William R. Parkhurst