Re: network setup question

Hi, Miles: On Thursday 06 May 2010 14:12:56 Miles Fidelman wrote: > Thanks to all who replied. I'm starting to zero in on this now. > > A few more details: > > To follow up with a few more details: > > server1 -- hub (switch) --- server 2 > > > datacenter's router > > The

Re: network setup question

On Thu, May 6, 2010 at 10:12 PM, Miles Fidelman wrote: > Thanks to all who replied.  I'm starting to zero in on this now. > > A few more details: > [snip] > > on server 1: > eth0: inet addr:207.154.13.48  Bcast:207.154.13.63  Mask:255.255.255.224 > (first netblock) > server1:/home/milesf# route >

Re: network setup question

Thanks to all who replied. I'm starting to zero in on this now. A few more details: To follow up with a few more details: server1 -- hub (switch) --- server 2 | | datacenter's router The hub is a basic $40 gigE switch (not swi

Re: network setup question

Anand Sivaram wrote: On Thu, May 6, 2010 at 06:36, Miles Fidelman mailto:mfidel...@meetinghouse.net>> wrote: Are you using static IP or using dhcp? If you are using static, then you could try your local netmask from 255

Re: network setup question

On Thu, 2010-05-06 at 01:05 -0700, Kevin Ross wrote: > On 5/6/2010 12:05 AM, Alex Samad wrote: > > [snip] > > What am I missing? nothing in your case it work, but they are supposed to be hosts in different networks. Which was the point I was trying to get at. And to be carefully - especially i

Re: network setup question

On Thu, May 6, 2010 at 13:35, Kevin Ross wrote: > On 5/6/2010 12:05 AM, Alex Samad wrote: > >> >> well think about it, if we are talking about network 192.168.11.0/24 >> (for my example I will use 24 instead of 27) >> >> the server would have an address 192.168.11.55/24 (for example) and the >> r

Re: network setup question

On 5/6/2010 12:05 AM, Alex Samad wrote: well think about it, if we are talking about network 192.168.11.0/24 (for my example I will use 24 instead of 27) the server would have an address 192.168.11.55/24 (for example) and the router would have 192.168.11.1/24 if I change the netmask of the ser

Re: network setup question

>if I change the netmask of the server it can no longer talk to the >router because it is in a different ip network ie 192.168.11.55/22 can't >talk to 192.168.11.1/24 (you can fake it on linux with iproute - see my >other answer to this thread). That does not look correct. Just to see how it work

Re: network setup question

On Wed, 2010-05-05 at 22:25 -0700, Kevin Ross wrote: > On 5/5/2010 9:11 PM, Alex Samad wrote: > > On Wed, 2010-05-05 at 20:55 -0700, Kevin Ross wrote: > > > >> On 5/5/2010 6:06 PM, Miles Fidelman wrote: > >> > > [snip] > > > > > >>> - I have two network /27 network blocks that are NO

Re: network setup question

On 5/5/2010 9:11 PM, Alex Samad wrote: On Wed, 2010-05-05 at 20:55 -0700, Kevin Ross wrote: On 5/5/2010 6:06 PM, Miles Fidelman wrote: [snip] - I have two network /27 network blocks that are NOT contiguous - I use one for each box I'm not a networking expert, but this

Re: network setup question

On Wed, 2010-05-05 at 20:55 -0700, Kevin Ross wrote: > On 5/5/2010 6:06 PM, Miles Fidelman wrote: [snip] > > - I have two network /27 network blocks that are NOT contiguous - I > > use one for each box > > > > I'm not a networking expert, but this part seems wrong to me. I don't > think you'r

Re: network setup question

On Wed, 2010-05-05 at 21:06 -0400, Miles Fidelman wrote: > Not sure if this is the right list, sort of a general linux networking > question (pointers to a more appropriate list welcomed) > > Setup: > > - I have two servers in a datacenter, currently used for different things > > - I have

Re: network setup question

On 5/5/2010 6:06 PM, Miles Fidelman wrote: Not sure if this is the right list, sort of a general linux networking question (pointers to a more appropriate list welcomed) Setup: - I have two servers in a datacenter, currently used for different things - I have one gigE cable coming in from

Re: network setup question

On Thu, May 6, 2010 at 06:36, Miles Fidelman wrote: > Not sure if this is the right list, sort of a general linux networking > question (pointers to a more appropriate list welcomed) > > Setup: > > - I have two servers in a datacenter, currently used for different things > > - I have one gigE

network setup question

Not sure if this is the right list, sort of a general linux networking question (pointers to a more appropriate list welcomed) Setup: - I have two servers in a datacenter, currently used for different things - I have one gigE cable coming in from one of the datacenter's big routers - that

Re: Network setup question again

> > Install the package tcpdump, and run `tcpdump -i eth0` to get a view of the > > packets being sent/received on the eth0 interface. .. > > > Thanks for the advice. This time it really shows something! > The IP setting on computer has no problem. Below is the > output of 'tcpdump -i eht0':

Re: Network setup question again

On Apr 25, Kevin Traas wrote: > > Install the package tcpdump, and run `tcpdump -i eth0` to get a view of the > packets being sent/received on the eth0 interface. .. > Thanks for the advice. This time it really shows something! The IP setting on computer has no problem. Below is the output

Re: Network setup question again

On Jun 6, [EMAIL PROTECTED] wrote : On Jun 6, Nathan E Norman wrote: : > : > ps. Between dmesg, ifconfig, and the proc filesystem you can poke : > around and get a good idea of what Linux thinks is going on, and how : > that meshes with what's supposed to be going on. : > : Thanks for the suggest

Re: Network setup question again

> Can anybody tell me what is the problem if the computer cannot > receive packets from other computer? I set all the configuration > file and IP address, hostname seems ok. I can 'ping' myself, > but not other computers, also I can not ping from other computer > to mine. I am sure the physical co

Re: Network setup question again

On Jun 6, Nathan E Norman wrote: > > . oving the NIC to > IRQ 10 or something, or remove the serial port (this is not always > possible). > On Jun 6, Nils Rennebarth wrote: > Does ifconfig shows errors? What media does it use (or try to use?) > AUI, BNC, 10BaseT? This should be printed at load

Re: Network setup question again

-BEGIN PGP SIGNED MESSAGE- On Fri, 6 Jun 1997 [EMAIL PROTECTED] wrote: >I have disabled the IRQ 3 from bios. this is what I saw in /proc/interrupts > 3: 455 : NE2000 >Is this correct? Apparently it receives interrupts. This is ok. A typical sign of a BIOS robbing the interrup

Re: Network setup question again

On Fri, 6 Jun 1997 [EMAIL PROTECTED] wrote: :On Jun 6, Nathan E Norman wrote: :> :> ps. Between dmesg, ifconfig, and the proc filesystem you can poke :> around and get a good idea of what Linux thinks is going on, and how :> that meshes with what's supposed to be going on. :> :Thanks for the su

Re: Network setup question again

On Jun 6, Nils Rennebarth wrote: > > Another one to test is > cat /proc/interrupts > Often, PnP BIOS'es need to be told to reserve certain IRQ's for non PnP > cards, otherwise they won't ever see an interrupt coming in. > I have disabled the IRQ 3 from bios. this is what I saw in /proc/interrupt

Re: Network setup question again

-BEGIN PGP SIGNED MESSAGE- On Fri, 6 Jun 1997 [EMAIL PROTECTED] wrote: >On Jun 6, Nathan E Norman wrote: >> >> ps. Between dmesg, ifconfig, and the proc filesystem you can poke >> around and get a good idea of what Linux thinks is going on, and how >> that meshes with what's supposed to

Re: Network setup question again

On Jun 6, Nathan E Norman wrote: > > ps. Between dmesg, ifconfig, and the proc filesystem you can poke > around and get a good idea of what Linux thinks is going on, and how > that meshes with what's supposed to be going on. > Thanks for the suggestions. I check with all these commands. Here is t

Re: Network setup question again

IS the driver for the NIC actually working? Use ifconfig to see if you're getting packet errors, or if the device is even configured. 0 RX packets usually means something is bolloxed up in your configuration - either the driver can't talk to the card because of a hardware conflict, or it's making

Network setup question again

Hi, Can anybody tell me what is the problem if the computer cannot receive packets from other computer? I set all the configuration file and IP address, hostname seems ok. I can 'ping' myself, but not other computers, also I can not ping from other computer to mine. I am sure the physical connec