[NTLUG:Discuss] Is there a such 'low power standby' phenomenons?

[m m]

still have the problem, and something interesting is I cannot get the 
webpage from my server but my friend can (at different location/state)!
please below, I have more detail information.

help!?

Thanks!

>From: Jared Cook <jaredmcook at yahoo.com>
> > >From: Mark Bickel <eusmb at exu.ericsson.se>

> > > > the server is kind of 'dead'.
> > > > but if I physically go back to 'use' the box
> >
> > I double checked:
> > There is no APM settings on the BIOS (disabled)
> > no amp modules was compiled in the kernel.
> > ampd is not rinning.
> >
> > still has this problem.
> >
> >
>I'm new here, but I'll be going to my first NTLUG
>meeting soon.
>
>Here's one from out in left field.  I had problems
>with ARP while using an LVS/IPVS cluster.  There are a
>lot of issues with virtual IPs and ARP addresses that
>I won't get into here, but the bottom line is I had to
>ping stuff in order to broadcast my ARP address
>because the router would add another MAC to it's table
>after a while.  {This might sound really strange, but
>in LVS, you have the members with the same virtual IP
>as the director, and if they are also responding to
>ARP requests your director is left out in the cold)
>I finally fixed it, but it was a nightmare trying to
>figure it out.
>
>My point is this, if you are on the other side of a
>router from the clients, your router may not have your
>ARP address for some odd reason.  Yes, it should be
>asking, but if another machine has the same IP, it
>could be responding to the ARP request first, or not
>responding at all for some reason.  This would explian
>why you had to telnet and ping arround for the others
>to get to you.
>
>So, in a nutshell, check to see if another machine has
>the same IP.
>
>Without more knowledge of your network topography it
>can be difficult to determine what the problem
>is.

this is the topo of my network:

internet
  |
(public ip from AT&T cable modem, forget the brand of NIC but use ne driver)
linux firewall
(private fixed ip 192.168.1.1, kingston PCI NIC)
  |
switch
| | |
| | |-fixed ip 192.168.1.2 (3com nic)
| |---fixed ip 192.168.1.3 (3com nic)
|-----fixed ip 192.168.1.4 (3com nic)

all boxes were asigned fix ip except the public ip (were assigned by AT&T 
cable)

>From: "Paul Ingendorf" <pauldy at wantek.net>
>Reply-To: discuss at ntlug.org

What kind of network are you on; DSL @HOME other cable provider using pppoe 
dhcp static?  Also what flava are you using.   From your
previous posts I see possible @HOME with redhat 6.2 running a 2.2.14 kernel. 
  I could be wrong but just to go out on a limb are you
using a etherpro driver on an intel 10/100 ethernet card?  If so there maybe 
a problem reading the mac adress from the card with the
driver that came with that kernel.  This causes multiple machines with this 
card to get the same Hardware ethernet address.  On DHCP
this can create some interesting lease problems where multiple machines on 
the network are sharing the same ip.  Which goes back to
the suggestion by Jared.  There is also the possibility that your being 
given a dhcp address that someone else has decided they want
as their static ip or vice versa.  So I wouldn't discount Jareds suggestion 
based off the idea of your network being to simple.

Yes, I am using @HOME, with redhat 6.2, but running 2.4.14 kernel.
The eth0 on the firewall is using ne driver (forget the brand name, cheap 
one)
the eth1 on the firewall is using 8139too driver (realteck chip)
the rest of boxes use 3com 3c509 nic

I am useing tinydns as dns server running on firewall.

does not setup ARP (should I?)





>
>Jared Cook
>
>http://www.ntlug.org/mailman/listinfo/discuss




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