[ixp1200] l3fwdr

[Botham, Mick]

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...
>>>
>>>      
>>>
>
>  
>