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08-01-2016 07:32 AM - edited 03-07-2019 12:19 AM
Hi everybody,
Does a router perform route-look up for a packet destined to one of its directly connected interfaces say loop back ?
or
since router is already aware of its directly connected interfaces therefore it is already actively listening on those IP configured on its interfaces so no route look up is performed.
Much appreciated.
Have a great day !!
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08-01-2016 09:34 AM
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The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
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In no event shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
By default, a router should route between networks on directly connected interfaces. NB: Some L3 switches you can disable routing, and if you do, it won't route between networks on directly connected interfaces.
Such routing between connected interface networks has nothing to do with "listening" for the IP on those interfaces. For example, even if there's no routing, those interfaces should normally respond to ARPs for their IPs.
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08-01-2016 09:34 AM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
By default, a router should route between networks on directly connected interfaces. NB: Some L3 switches you can disable routing, and if you do, it won't route between networks on directly connected interfaces.
Such routing between connected interface networks has nothing to do with "listening" for the IP on those interfaces. For example, even if there's no routing, those interfaces should normally respond to ARPs for their IPs.
