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Forum Topic - ifconfig, qnet, io-pkt: (4 Items)
   
Update
Kevin Stallard(deleted)
11/10/2009 5:58 PM
post41741
ifconfig, qnet, io-pkt   
I've encountered some interesting behavior that intertwines ifconfig/tcpip with qnet.

The qnet stack is running, but it is not going over tcp/ip.  If I do an ifconfig fxp0 down on the node, qnet traffic 
appears to stop for a while, then begins again.

I noticed it when I did a

on -f node ifconfig down

qnet traffic stopped, but then after a few minutes came back up again.

I found a post where an IP address was being set with ifconfig that suggested the NIC may be reinitialized by this step.


Is this so?  Is there a way to prevent ifconfig from interfering with qnet?

Thanks
Kevin
Sean Boudreau(deleted)
11/12/2009 9:43 AM
post41836
Re: ifconfig, qnet, io-pkt   
On Tue, Nov 10, 2009 at 05:58:26PM -0500, Kevin Stallard wrote:
> I've encountered some interesting behavior that intertwines ifconfig/tcpip with qnet.
> 
> The qnet stack is running, but it is not going over tcp/ip.  If I do an ifconfig fxp0 down on the node, qnet traffic 
appears to stop for a while, then begins again.
> 
> I noticed it when I did a
> 
> on -f node ifconfig down
> 
> qnet traffic stopped, but then after a few minutes came back up again.
> 
> I found a post where an IP address was being set with ifconfig that suggested the NIC may be reinitialized by this 
step.
> 
> Is this so?  Is there a way to prevent ifconfig from interfering with qnet?

If a link is marked down it shouldn't be operational.
If qnet happens to work on it that's probably a bug
but it might happen with older io-net based drivers
via the shim.

-seanb
Kevin Stallard(deleted)
11/12/2009 6:02 PM
post41879
RE: ifconfig, qnet, io-pkt   

"If a link is marked down it shouldn't be operational.
If qnet happens to work on it that's probably a bug
but it might happen with older io-net based drivers
via the shim."

Shouldn't ifconfig only work on the tcp/ip stack?  It is a tcp/ip
configuration tool, not a qnet configuration tool....

Thanks
Kevin
Sean Boudreau(deleted)
11/12/2009 8:42 PM
post41882
Re: ifconfig, qnet, io-pkt   
On Thu, Nov 12, 2009 at 06:02:25PM -0500, Kevin Stallard wrote:
> 
> 
> "If a link is marked down it shouldn't be operational.
> If qnet happens to work on it that's probably a bug
> but it might happen with older io-net based drivers
> via the shim."
> 
> Shouldn't ifconfig only work on the tcp/ip stack?  It is a tcp/ip
> configuration tool, not a qnet configuration tool....

I don't think so. Qnet is a protocol that runs on
various link layers.  If the link is marked down
nothing, including qnet, should go over it.

-seanb

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