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TOPIC: How to use ARP Proxy with 3 pysical networks?

How to use ARP Proxy with 3 pysical networks? 9 years 8 months ago #20121

  • aymoush
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Hi guys....

We all know that proxy ARP works with 1 router over 2 physical networks, where the router is the middle man between the 2 physical networks....

My question is: can Proxy ARP be used with 2 routers interconnection 3 Physical Networks ?

and how will the routers behave in this architecture if it's possible ?

Explanation will be much appreciated...

Thanks
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Re: How to use ARP Proxy with 3 pysical networks? 9 years 8 months ago #20134

  • krik
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If two routers are connected on the same physical network and perform proxy ARP, there will be a race condition, the client will use the MAC address from the first ARP reply it receives. If the two router are connected on the same physical networks, it won't be a problem... Except if you use NAT because the NAT tables won't be synchronized and if the return path is on the other router the NAT entry won't be found...
Christophe Lemaire
www.exp-networks.be/blog/
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