Bob Chiodini wrote:
Robert Moskowitz wrote:
Craig Van Ham wrote:
Does any one know if this is normal operating of ARP… Or where to
start looking…
I am seeing a lot of ARP requests for my router IP from the same IP
within seconds.
21:04:41.112929 arp who-has IP tell MY ROUTERS IP
Get us the MAC address that is asking. This will give us the card
manufacturer, which will then, perhaps tell you which system on your
network is the culprit.
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It looks like it's his router that is asking and the requested device
is not responding. Is the "who-has IP" address up and valid?
It would be interesting to know what IP address is being asked for.
For example, this is the router asking, and of course the router's
interface is statically configured, and the address it is looking for is
either its:
The DNS server
The NTP server
The SYSLOG server
The COPS policy server (yeah, like anyone has implemented COPS and if
they did, this would be an anycast)
The SYSLOG server has my bet, as a router, configured for remote
syslogging will always have something to send to its syslog...
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