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  1. Hi Rene,

    Looking at R1’s configuration, you have not involved/advertised network towards ISP in RIP process. So how it will send RIP updates on ISP connecting interface?

  2. Hello Swapnil

    RIP is an Interior Gateway Routing Protocol (IGRP) which means that it functions within an organization’s or an enterprise network. RIP and other IGRPs (such as OSPF or EIGRP) are not regularly used by ISPs and their internal networks as they usually use BGP.

    So R1 will not share its routing information with the ISP router nor with the ISP router share its information with R1. (If sharing of routes between ISP and R1 routers was enabled, it would most likely use BGP).

    However, in order for R1 to route correctly to 4.4.4.4 (and to any other desti

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  3. Hi,

    In the lesson, it is stated that R1 sens RIP updates toward ISP also, but under ‘router rip’ there is no 192.168.14.0 so it shouldn’t send? Could you check again?

    R1(config)#router rip
    R1(config-router)#version 2
    R1(config-router)#no auto-summary 
    R1(config-router)#network 192.168.12.0
    R1(config-router)#network 192.168.13.0
    

    regards,

  4. Hello Murat

    When a router is configured to fun the RIP routing protocol, it sends out RIP updates from ALL of its interfaces, regardless of which networks are being advertised. This means that RIP updates will be sent to the ISP, but will be ignored. For this reason, it is a good idea to make such interfaces passive, to eliminate needless RIP updates.

    Keep in mind that the network command simply states which networks will be advertised. It does not affect which interfaces will send RIP updates. It is the passive command that disables the (default) behaviour

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