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EIGRP Auto-summary


Why does the MTU mean different things?Different TTL in ICMP response (Traceroute)Why do static routes not need a “default-metric” set when redistributing into EIGRP?Disabling Ethernet Flow-Control at the EndpointHow does exactly reverse-path broadcast work?What book is this CCNA lab exercise from?What protocol forces a switch to populate it's CAM table with the MAC address of a directly connected switchport?why the two hosts with same “Subnet Address” in LAN can be pinged?How to use Dijkstra's Algorithm?Very confused with routing













2















One more question about EIGRP,



EIGRP auto-summary what is the impact on the network ? i was reading about but it was not clear for me.



And why is it a good Cisco practice to be disabled ?



I am studying for my CCNA and i really want to a have a good understanding of all topics, so apologies for my basic questions.










share|improve this question
























  • Luckily, EIGRP auto-summarization is off by default, these days - one tripwire gone, finally :-) cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/…

    – Marc 'netztier' Luethi
    Mar 22 at 13:55












  • thank you Marc!

    – Alexandre Amaral Bednell
    Mar 22 at 14:24















2















One more question about EIGRP,



EIGRP auto-summary what is the impact on the network ? i was reading about but it was not clear for me.



And why is it a good Cisco practice to be disabled ?



I am studying for my CCNA and i really want to a have a good understanding of all topics, so apologies for my basic questions.










share|improve this question
























  • Luckily, EIGRP auto-summarization is off by default, these days - one tripwire gone, finally :-) cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/…

    – Marc 'netztier' Luethi
    Mar 22 at 13:55












  • thank you Marc!

    – Alexandre Amaral Bednell
    Mar 22 at 14:24













2












2








2








One more question about EIGRP,



EIGRP auto-summary what is the impact on the network ? i was reading about but it was not clear for me.



And why is it a good Cisco practice to be disabled ?



I am studying for my CCNA and i really want to a have a good understanding of all topics, so apologies for my basic questions.










share|improve this question
















One more question about EIGRP,



EIGRP auto-summary what is the impact on the network ? i was reading about but it was not clear for me.



And why is it a good Cisco practice to be disabled ?



I am studying for my CCNA and i really want to a have a good understanding of all topics, so apologies for my basic questions.







cisco routing protocol-theory eigrp






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Mar 22 at 12:12









Cown

6,91131031




6,91131031










asked Mar 22 at 12:11









Alexandre Amaral BednellAlexandre Amaral Bednell

743




743












  • Luckily, EIGRP auto-summarization is off by default, these days - one tripwire gone, finally :-) cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/…

    – Marc 'netztier' Luethi
    Mar 22 at 13:55












  • thank you Marc!

    – Alexandre Amaral Bednell
    Mar 22 at 14:24

















  • Luckily, EIGRP auto-summarization is off by default, these days - one tripwire gone, finally :-) cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/…

    – Marc 'netztier' Luethi
    Mar 22 at 13:55












  • thank you Marc!

    – Alexandre Amaral Bednell
    Mar 22 at 14:24
















Luckily, EIGRP auto-summarization is off by default, these days - one tripwire gone, finally :-) cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/…

– Marc 'netztier' Luethi
Mar 22 at 13:55






Luckily, EIGRP auto-summarization is off by default, these days - one tripwire gone, finally :-) cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/…

– Marc 'netztier' Luethi
Mar 22 at 13:55














thank you Marc!

– Alexandre Amaral Bednell
Mar 22 at 14:24





thank you Marc!

– Alexandre Amaral Bednell
Mar 22 at 14:24










1 Answer
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Auto-summary summarizes network advertisements based on classful boundaries. Since classful addressing has been obsolete since before you were born, it's good practice to disable it.






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    Auto-summary summarizes network advertisements based on classful boundaries. Since classful addressing has been obsolete since before you were born, it's good practice to disable it.






    share|improve this answer



























      3














      Auto-summary summarizes network advertisements based on classful boundaries. Since classful addressing has been obsolete since before you were born, it's good practice to disable it.






      share|improve this answer

























        3












        3








        3







        Auto-summary summarizes network advertisements based on classful boundaries. Since classful addressing has been obsolete since before you were born, it's good practice to disable it.






        share|improve this answer













        Auto-summary summarizes network advertisements based on classful boundaries. Since classful addressing has been obsolete since before you were born, it's good practice to disable it.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Mar 22 at 12:18









        Ron TrunkRon Trunk

        39.6k33780




        39.6k33780



























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