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ARP Response

Posted on 2014-04-16
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Last Modified: 2014-04-17
http://www.experts-exchange.com/Hardware/Networking_Hardware/Routers/Q_28410658.html

I have posted a question in the above link..
it is about Host A wants to reach Host B, which is several hops away, I got to understand how the request gets to its destination. However I forgot to ask when the response gets back to the originating host whether host A will have in its table the  IP address to Mac address of the host B or IP address of host B but Mac  address of Router1.

I guess next request from Host A to host B will go faster than initial one.

Thanks
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Question by:jskfan
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by:jburgaard
ID: 40004421
IP address of host B but Mac  address of Router1

I guess next request from Host A to host B will go faster than initial one
-fair assumption
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TimotiSt earned 1800 total points
ID: 40004833
IP address of host B but Mac  address of Router1
I don't think that's correct; if the destination host is outside your subnet, you don't have it in the local ARP table. Only the IP of your gateway with the MAC of the gateway.
We don't know anything about the remote host, it might not be Ethernet, for all we know.
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by:jburgaard
jburgaard earned 200 total points
ID: 40005423
TimotiSt is absolutely right.
I must have been thinking of the returning packets (or sleeping ;-) )

On a windows-machine the command:
arp -a
will show what at this point in time is in the arp-cache.
So if you issue 'arp -a' you will only see local addresses .
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Author Closing Comment

by:jskfan
ID: 40006058
Thank you Guys!
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