k2s Posted October 17, 2011 Author Report Posted October 17, 2011 Interior IP Routing Protocols Compared [img]http://i56.tinypic.com/11vl9ua.png[/img] Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 [img]http://i51.tinypic.com/eziquv.png[/img] Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 AD: Administrative distance is a number that denotes how believable an entire routing protocol is on a single router. The lower the number, the better, or more believable, the routing protocol. For instance, RIP has a default administrative distance of 120, and EIGRP defaults to 90, making EIGRP more believable than RIP. So, when both routing protocols learn routes to the same subnet, the router adds only the EIGRP route to the routing table. Default Administrative Distances Route Type Administrative Distance Connected 0 Static 1 BGP (external routes) 20 EIGRP (internal routes) 90 IGRP 100 OSPF 110 IS-IS 115 RIP 120 EIGRP (external routes) 170 BGP (internal routes) 200 Unusable 255 NOTE The show ip route command lists each route’s administrative distance as the first of the two numbers inside the brackets. The second number in brackets is the metric. Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 the two routing protocols might learn routes to the same subnets. When a single routing protocol learns multiple routes to the same subnet, the metric tells it which route is best. However, when two different routing protocols learn routes to the same subnet, because each routing protocol’s metric is based on different information, IOS cannot compare the metrics. For instance, RIP might learn a route to subnet 10.1.1.0 with metric 1, and EIGRP might learn a route to 10.1.1.0 with metric 2,195,416, but the EIGRP may be the better route—or it may not. There is simply no basis for comparison between the two metrics. Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 [color=#ff0000][size=6]Any Doubts [/size][/color] Quote
Jatka Bandi Posted October 17, 2011 Report Posted October 17, 2011 [quote name='k2s' timestamp='1318887275' post='3000950'] [color=#ff0000][size=6]Any Doubts [/size][/color] [/quote] nuvvu mammalni eppudu vadulutavra pantulu ga.... Quote
ToughGuy Posted October 17, 2011 Report Posted October 17, 2011 [quote name='bantrothu bullabbai' timestamp='1318887433' post='3000958'] nuvvu mammalni eppudu vadulutavra pantulu ga.... [/quote] [img]http://i55.tinypic.com/sevktc.gif[/img] Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 [quote name='bantrothu bullabbai' timestamp='1318887433' post='3000958'] nuvvu mammalni eppudu vadulutavra pantulu ga.... [/quote] ninnu evvaru vinnamannaru bullabbai Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 @all...... u can refer ICND2 exam certification guide - for further reading [url="http://megaupload.com/?d=2L8VC5NW"]http://megaupload.com/?d=2L8VC5NW[/url] Quote
robo Posted October 17, 2011 Report Posted October 17, 2011 [quote name='k2s' timestamp='1318886337' post='3000891'] [img]http://i55.tinypic.com/29o5xcl.png[/img] Router B’s RIP route to 10.1.1.0 points through Router A because that route has a lower hop count (1) than the route through Router C (2). However, in the lower half of the figure, Router B chooses the two-hop route through Router C when using EIGRP because the bandwidths of the two links in the route are much faster (better) than that of the single-hop route. Note that so that EIGRP would make the right choice, the engineer correctly configured the interface bandwidth to match the actual link speeds, thereby allowing EIGRP to choose the faster route. [/quote] eigrp gathers bandwidth details of all the neighboring routes so while routing if the packet has to pass through a router which doesn't support eigrp wii again be routed to its destination adopting diff protocol so in this process a packet is not bound to a particular protocol in its path but multiple routing protocols are used ? Quote
Jatka Bandi Posted October 17, 2011 Report Posted October 17, 2011 [quote name='k2s' timestamp='1318887662' post='3000968'] ninnu evvaru vinnamannaru bullabbai [/quote] naa dfost gallandarini pattukuni sollu septunte nenu evadtho adukovali..... Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 [quote name='ROBO' timestamp='1318887957' post='3000984'] eigrp gathers bandwidth details of all the neighboring routes so while routing if the packet has to pass through a router which doesn't support eigrp wii again be routed to its destination adopting diff protocol so in this process a packet is not bound to a particular protocol in its path but multiple routing protocols are used ? [/quote] question enti ? R1-----------R2----------R3----------R4 R1, R2, R4 are running EIGRP R3 is running RIPv2 assume.......... then R3 doesn't understand. updates coming from R2 to R3...... |||larly R4 doesn't understand R3 updates....... To understand different protocol updates... we use Route- Redistribution. Quote
k2s Posted October 17, 2011 Author Report Posted October 17, 2011 [quote name='bantrothu bullabbai' timestamp='1318888003' post='3000987'] naa dfost gallandarini pattukuni sollu septunte nenu evadtho adukovali..... [/quote] peddollaki entha kastam ochindhi...... Quote
robo Posted October 17, 2011 Report Posted October 17, 2011 [quote name='k2s' timestamp='1318888143' post='3000990'] question enti ? R1-----------R2----------R3----------R4 R1, R2, R4 are running EIGRP R3 is running RIPv2 assume.......... then R3 doesn't understand. updates coming from R2 to R3...... |||larly R4 doesn't understand R3 updates....... To understand different protocol updates... we use Route- Redistribution. [/quote] Route- Redistribution ante Quote
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