[ixp1200] l3fwdr

[vikram nayak]

how do i prog the PHY device so that its 10MB mode is not default. How do i know
if the device is 10 or 100?

----- Original Message -----
From: "Botham, Mick" <mick.botham at intel.com>
Date: Sunday, April 6, 2003 3:42 am
Subject: RE: [ixp1200] l3fwdr

> Kamesh,
> 
> I'm not sure if this applies to the ENP-2305, but it did affect the
> IXP1200EB.
> 
> Some PHY devices default 10MB mode is also loop-back mode, so on a 10MB
> connection, as soon as a packet is sent by the IXP1200 it gets looped back
> to the IXP1200, and so the process goes on, the result is a packet flood.
> The fix was either to connect to a 100MB device so the PHY would
> auto-negotiate to 100MB, or to program the PHY so that in 10MB mode it
> wasn't set to loopback.
> 
> Rgds
> 
> Mick
> 
> 
> Hi,
>      Ping was not running. In fact the PC kind of hangs ie mouse 
> pointer disappears etc when I connnect. I am able to see the output only 
> after I disconnect.
> Configuration:
> Ethernet port 1 of  ENP-2505 is connected back-to-back to the eth1 of 
> the host PC ( PC in which the card is plugged in)  through a crossover 
> cable.
> The IP address of the IXP port is 192.168.1.150 and the IP address of 
> the PC port is 192.168.1.3 .
> 
> Also is there any option is the ixsys.config file through which I can 
> specify the rate ?
> Thanks,
> Kamesh.
> 
> 
> Abhijeet Joglekar wrote:
> 
> >Hi Kameswara,
> >
> >I guess you have already tried to connect the PC port to the IXP
> >port without going thro' the hub as Cyrus suggested. Just to rule
> >out any autonegotiation problems betweem 10/100 hub and IXP port.
> >
> >So is ping running when you captured that tcpdump output?
> >Also, what are the interface addresses of the IXP port
> >and the PC port in your setup?
> >
> >-- abhijeet
> >
> >On Thu, 3 Apr 2003, Kameswara Avasarala wrote:
> >
> >  
> >
> >>Hi,
> >>    This is what I observe if I do a tcpdump.
> >>
> >>
> >>Cyrus Hall wrote:
> >>
> >>    
> >>
> >>>Hi there-
> >>>
> >>>You mention a great deal of link level activity.  Have you done a TCP
> >>>dump?  I had my ENP-2505 hooked up to a 10 Mbps hub which was causing
> >>>all sorts of issues, including a packet flood to be issued from the card
> >>>whenever I tried to start up a uACE.  Make sure all interfaces are 100
> >>>Mbps and see if that helps...
> >>>
> >>>      
> >>>
> >
> >  
> >
> 
> 
>