Re: Multicast Traffic storm flooding network

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Phillip Windell (_at_.)
Date: 05/04/04 

Date: Tue, 4 May 2004 09:22:49 -0500

Is there a process running on the machines called "avserve.exe"? It may
have a number in it like "avserve2.exe". 

-- 
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com
"Mark Heimonen" <marhei@munroept.com> wrote in message
news:ummrzYdMEHA.1644@TK2MSFTNGP09.phx.gbl...
> We moved to a new location over the weekend, and have a problem that seems
> to occur after the network is up for about two hours.  We have a small
> network - a couple Windows 2000 servers, with Windows 98, 2000, and XP
> clients.  All computers, along with a T1 line, are connected to an HP
> Procurve Switch.  After starting up the network, everything seems to work
> fine for a few hours.  Suddenly, the network appears unresponsive.
>
> Our domain controller appears to be the culprit.  This server has two
NICs,
> which are both connected to the switch.  Using the web-based monitor
> available on the switch, I discovered that one of the NICs, along with the
> T1 line are both at 100% utilization.  I installed the network monitor
> component on the server, and discovered that the source of the problem
> appears to be thousands of multicast frames per second being sent to the
T1
> line.  The multicast frames are of the form, with seemingly random IP
> Addresses listed:
>
> Dest MAC             Protocol Desc
>
> 000BFD0F0B00    SSP        Unknown Security Support Provider
>
> It doesn't appear that any Multicast traffic is used on the network until
> this situation occurs.
>
> Questions:
>
> What is multlicast traffic used for?  Is there any way I can disable
> Multicast traffic on the server's NIC?
>
> What is SSP?
>
> What steps can I take to debug this problem?  (I  have tried turning
> Automatic Broadcast Control and Multicast Filtering on the switch, to no
> avail.  I also tried enabling Spanning-Tree Protocol...Is having two
network
> cards on the server connected to the same switch a potential source of
> problems?)
>
> I have also read that we could have a half/full duplex
problem...Currently,
> I have all ports on the switch set to auto.  Should I manually set the
ports
> for the server and the T1 line?  If so, what should a T1 line usually be
set
> to?
>
>
>
>

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