Strange network traffic??

Bill Moran wmoran at
Fri Apr 18 05:42:30 PDT 2003

Dragoncrest wrote:
>     Hi all.  Just a few weeks back I started noticing this traffic 
> showing up on my lan and I have no idea how to explain it.  Using 
> trafshow I get the from address as my router gateway for our connection 
> coming in from our provider, and destination as OSPF-ALL.MCAST.NET, the 
> protocol is OSPF, and it's only sending about 80 bytes of data every 30 
> seconds to a minute or so.  It's obviously not internal network traffic 
> as source and destination are not internal, yet these show up on my 
> machine when I'm monitoring the network.  Any suggestions, ideas, or 
> thoughts as to what the heck this is??

OSPF is "open shortest path first", which is a routing protocol.
 From the looks of it, it's transmitting through multicast, so it's possible
that your gateway is programmed to use ospf and is multicasting to your
network to find other ospf capable devices.

Check the docs on the router you're using.  It's likely you can turn this

Bill Moran
Potential Technologies

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