Chapter 5 Notes - Chapter 5 Notes RIP version 1 RIPv1 Distance Vector Classful Routing Protocol One of the oldest vector routing protocols Not"on

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Chapter 5 Notes – RIP version 1 RIPv1: Distance Vector, Classful Routing Protocol One of the oldest vector routing protocols Not “on the way out” IPv6 form of RIP – RIPng (next generation) available Characteristics RIP – distance vector routing protocol RIP uses hop count as only metric for path selection Advertised routes with hop counts > 15 = unreachable Messages broadcast every 30 seconds Encapsulated RIPv1 Message Data Link Frame Header IP Packet Header UDP Segment Header RIP Message (512 bytes; up to 25 routes) MA C Sour ce Add ress MA C Dest . Add ress = Broa dcas t IP P ac k et IP S o ur ce A d d. IP D es t. A d d. Pr ot o c ol Fi el d (1 7 fo r U D P) Sourc e Port = 520 Dest. Port = 520 Command: Request (1); Response (2) Version = 1 Add. Family ID = 2 for IP Routes: Network IP Address Metric: Hop Count RIP Header: Command: field specifies message type Version: set to 1 for RIPv1 Must be zero: provide room for future expansion of protocol Route Entry: Address family identifier: (set to 2 for IP unless a router is requesting a full routing table, then set to zero) IP address Metric Maximum data
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RIP Operation RIP uses 2 message types specified in command field: Request message Response message Each rip sends out req. message on startup, req. all RIP neighbors send complete routing tables
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This note was uploaded on 04/29/2008 for the course ICTN 2154 taught by Professor Khoury during the Spring '08 term at East Carolina University .

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Chapter 5 Notes - Chapter 5 Notes RIP version 1 RIPv1 Distance Vector Classful Routing Protocol One of the oldest vector routing protocols Not"on

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