Right after the NY celebration I wanted to crawl the web & get in touch with my friends. I was really disappointed when I saw our local gateway down…No ping queries were successful:(
I put ping 192.168.1.123 -t and returned to celebration!
At 02 AM ping succeeded!
The situation repeated several times…

But I really wanted to wish best wishes to my mates!
So I started to investigate… The computer was overfilled with ARP-queries They changed the real MAC-address of the gateway, so the computer sent packets into wrong place.

The solution is simple:

Make your ARP table entries static!
Under Windows You can do it in the following way:

1. Run “cmd”; [Start->Run->type "cmd" into it]
2. type in command line:
   arp -s Gateway.Or.Another.Computer It-s-MAC-Address
3. For instance if computer’s ip is 192.168.1.123;
4. It’s MAC-address is 00-11-22-33-44-55;
5. So you should type into command-line:
   arp -s 192.168.1.123 00-11-22-33-44-55

Best Wishes!!!