L34 - IPV6 Header Extension Headers (options) Show Fig....

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Unformatted text preview: IPV6 Header Extension Headers (options) Show Fig. 5-69 Extension headers appear in above order, if present. Hop-by-hop header- requires examination by every router on path. Example of hop-by-hop header for payloads > 65,535 bytes, called "jumbo" packet, up to > 4 billion bytes, no fragmenting. Useful for video packets. Show Figure 5-70. Next header, 8 bits 0" field identifies a minimum extension length of 8 bytes. Router extension header - Lists one or more intermediate nodes to be visited enroute to destination. Show Figure 5-71. Segments left decrements when specified routers have been visited. Header extension length, 8 bits - in 64 -bit units IPV4/IPV6 compatibility - zero-extending, prefixing, tunneling IPV6 through IPV4 parts. Other IPV6 features and improvements. No need for address translation. Extension header allows Source-directed routing. Anycast address to go to the nearest of a set of places. Return to the Transport Layer Show Figure 6.1 The transport layer is mostly connection-...
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This note was uploaded on 09/23/2009 for the course CMPEN 362 taught by Professor Johnmetzner during the Spring '09 term at Pennsylvania State University, University Park.

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L34 - IPV6 Header Extension Headers (options) Show Fig....

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