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collisions caused by faulty interface?

 
 
brandon
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      01-30-2004, 01:14 AM
I am using crossover cable to connect two computers and pinging either
outputs "No Route To Host."

On each computer, I can ping the static IP address which it is
assigned to,
On each computer, when I ping an address (besides its own) INSIDE the
192.168.1.0 range it hangs for awhile and outputs "No Route To Host"
On each computer, when I ping an address OUTSIDE the 192.168.1 range
it outputs "Network Unreachable." This provides little clues so here's
what I got.

Computer 1 is a Dell Optiplex w/ one onboard ethernet interface
Computer 2 is an IBM NetVista w/ one onboard ethernet interface

-- When I do 'ifconfig -a'

-- Dell Optiplex --
eth0 Link encap:Ethernet HW Addr: 00:40:4F:45:EA:7E
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
Rx packets:0 errors:0 dropped:0 overruns:0 carrier:0 frame:0
Tox packets:329 errors:0 dropped:0 overruns:0 carrier:0
Collisions:0 txqueuelen:100
Rx Bytes:0 (0, 0b) Tx bytes: 24310 (23.7 kb)
Interrupt:5 Base Address 0x220

eth1 Link encap:Ethernet HW Addr: 00:C0:4F:C5:EA:7E
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
Rx packets:0 errors:0 dropped:0 overruns:11220 carrier:0 frame:0
Tox packets:11220 errors:0 dropped:0 overruns:0 carrier:33660
Collisions:11220 txqueuelen:100
Rx Bytes:0 (0, 0b) Tx bytes: 0 (0, 0 b)
Interrupt:10 Base Address 0x250

-- IBM NetVista --
eth0 Link encap:Ethernet HW Addr: 00:400:13:06:57
inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
Rx packets:344 errors:0 dropped:0 overruns:0 carrier:0 frame:0
Tox packets:11 errors:0 dropped:0 overruns:0 carrier:0
Collisions:0 txqueuelen:100
Rx Bytes:28238 (27.5 kb) Tx bytes: 462 (462.0 b)
Interrupt:9 Base Address 0xd800

--When I do route -n --

-- Dell Optiplex --

Kernel IP Routing Table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

-- IBM NetVista --

Kernel IP Routing Table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0

So there's alot of collisions on eth1, huh? The collisions on eth1 go
up each time I ping.

Why the Dell Optiplex has eth0 and eth1, when it has but one
interface, I do not know. I always thought it was one interface per
port.

I'm also confused (trivial as it maybe) the Dell Optiplex HWaddress
appears different for eth0 and eth1? I inspected this computer inside
and out and it looks to have but one onboard ethernet interface...
 
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Patrick Cohan
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      01-30-2004, 02:06 AM
Put the opposite machines IP address as the gateway

"brandon" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> I am using crossover cable to connect two computers and pinging either
> outputs "No Route To Host."
>
> On each computer, I can ping the static IP address which it is
> assigned to,
> On each computer, when I ping an address (besides its own) INSIDE the
> 192.168.1.0 range it hangs for awhile and outputs "No Route To Host"
> On each computer, when I ping an address OUTSIDE the 192.168.1 range
> it outputs "Network Unreachable." This provides little clues so here's
> what I got.
>
> Computer 1 is a Dell Optiplex w/ one onboard ethernet interface
> Computer 2 is an IBM NetVista w/ one onboard ethernet interface
>
> -- When I do 'ifconfig -a'
>
> -- Dell Optiplex --
> eth0 Link encap:Ethernet HW Addr: 00:40:4F:45:EA:7E
> inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
> Rx packets:0 errors:0 dropped:0 overruns:0 carrier:0 frame:0
> Tox packets:329 errors:0 dropped:0 overruns:0 carrier:0
> Collisions:0 txqueuelen:100
> Rx Bytes:0 (0, 0b) Tx bytes: 24310 (23.7 kb)
> Interrupt:5 Base Address 0x220
>
> eth1 Link encap:Ethernet HW Addr: 00:C0:4F:C5:EA:7E
> inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
> BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
> Rx packets:0 errors:0 dropped:0 overruns:11220 carrier:0 frame:0
> Tox packets:11220 errors:0 dropped:0 overruns:0 carrier:33660
> Collisions:11220 txqueuelen:100
> Rx Bytes:0 (0, 0b) Tx bytes: 0 (0, 0 b)
> Interrupt:10 Base Address 0x250
>
> -- IBM NetVista --
> eth0 Link encap:Ethernet HW Addr: 00:400:13:06:57
> inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
> UP BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
> Rx packets:344 errors:0 dropped:0 overruns:0 carrier:0 frame:0
> Tox packets:11 errors:0 dropped:0 overruns:0 carrier:0
> Collisions:0 txqueuelen:100
> Rx Bytes:28238 (27.5 kb) Tx bytes: 462 (462.0 b)
> Interrupt:9 Base Address 0xd800
>
> --When I do route -n --
>
> -- Dell Optiplex --
>
> Kernel IP Routing Table
> Destination Gateway Genmask Flags Metric Ref Use Iface
> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>
> -- IBM NetVista --
>
> Kernel IP Routing Table
> Destination Gateway Genmask Flags Metric Ref Use Iface
> 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>
> So there's alot of collisions on eth1, huh? The collisions on eth1 go
> up each time I ping.
>
> Why the Dell Optiplex has eth0 and eth1, when it has but one
> interface, I do not know. I always thought it was one interface per
> port.
>
> I'm also confused (trivial as it maybe) the Dell Optiplex HWaddress
> appears different for eth0 and eth1? I inspected this computer inside
> and out and it looks to have but one onboard ethernet interface...



 
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CL (dnoyeB) Gilbert
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      01-30-2004, 03:43 AM
Patrick Cohan wrote:
> Put the opposite machines IP address as the gateway
>
> "brandon" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) om...
>
>>I am using crossover cable to connect two computers and pinging either
>>outputs "No Route To Host."
>>
>>On each computer, I can ping the static IP address which it is
>>assigned to,
>>On each computer, when I ping an address (besides its own) INSIDE the
>>192.168.1.0 range it hangs for awhile and outputs "No Route To Host"
>>On each computer, when I ping an address OUTSIDE the 192.168.1 range
>>it outputs "Network Unreachable." This provides little clues so here's
>>what I got.
>>
>>Computer 1 is a Dell Optiplex w/ one onboard ethernet interface
>>Computer 2 is an IBM NetVista w/ one onboard ethernet interface
>>
>>-- When I do 'ifconfig -a'
>>
>>-- Dell Optiplex --
>>eth0 Link encap:Ethernet HW Addr: 00:40:4F:45:EA:7E
>>inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
>>UP BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
>>Rx packets:0 errors:0 dropped:0 overruns:0 carrier:0 frame:0
>>Tox packets:329 errors:0 dropped:0 overruns:0 carrier:0
>>Collisions:0 txqueuelen:100
>>Rx Bytes:0 (0, 0b) Tx bytes: 24310 (23.7 kb)
>>Interrupt:5 Base Address 0x220
>>
>>eth1 Link encap:Ethernet HW Addr: 00:C0:4F:C5:EA:7E
>>inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
>>BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
>>Rx packets:0 errors:0 dropped:0 overruns:11220 carrier:0 frame:0
>>Tox packets:11220 errors:0 dropped:0 overruns:0 carrier:33660
>>Collisions:11220 txqueuelen:100
>>Rx Bytes:0 (0, 0b) Tx bytes: 0 (0, 0 b)
>>Interrupt:10 Base Address 0x250
>>
>>-- IBM NetVista --
>>eth0 Link encap:Ethernet HW Addr: 00:400:13:06:57
>>inet addr:192.168.1.3 Bcast:192.168.1.255 Mask:255.255.255.0
>>UP BROADCAST RUNNING MULTICAST MTU:1500 MTU:1
>>Rx packets:344 errors:0 dropped:0 overruns:0 carrier:0 frame:0
>>Tox packets:11 errors:0 dropped:0 overruns:0 carrier:0
>>Collisions:0 txqueuelen:100
>>Rx Bytes:28238 (27.5 kb) Tx bytes: 462 (462.0 b)
>>Interrupt:9 Base Address 0xd800
>>
>>--When I do route -n --
>>
>>-- Dell Optiplex --
>>
>>Kernel IP Routing Table
>>Destination Gateway Genmask Flags Metric Ref Use Iface
>>192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>>
>>-- IBM NetVista --
>>
>>Kernel IP Routing Table
>>Destination Gateway Genmask Flags Metric Ref Use Iface
>>192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
>>
>>So there's alot of collisions on eth1, huh? The collisions on eth1 go
>>up each time I ping.
>>
>>Why the Dell Optiplex has eth0 and eth1, when it has but one
>>interface, I do not know. I always thought it was one interface per
>>port.
>>
>>I'm also confused (trivial as it maybe) the Dell Optiplex HWaddress
>>appears different for eth0 and eth1? I inspected this computer inside
>>and out and it looks to have but one onboard ethernet interface...

>
>
>


You have 2 cards in that computer. Its got an address and an interrupt
and they both have seen data. You need to resolve that first. eth1
does nto appear to be UP either, whatever that means.

also you can get collissions when you are not using a switch. It looks
like these collissions are due to the multipel cards though as the IBM
is not experiencing them...


--
Respectfully,


CL Gilbert

"Verily, verily, I say unto you, He that entereth not by the door() into
the sheepfold{}, but climbeth up some other *way, the same is a thief
and a robber." John 10:1

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ynotssor
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      01-30-2004, 07:37 AM
"brandon" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om

> I am using crossover cable to connect two computers and pinging either
> outputs "No Route To Host."
>
> On each computer, I can ping the static IP address which it is
> assigned to,
> On each computer, when I ping an address (besides its own) INSIDE the
> 192.168.1.0 range it hangs for awhile and outputs "No Route To Host"
> On each computer, when I ping an address OUTSIDE the 192.168.1 range
> it outputs "Network Unreachable." This provides little clues so here's
> what I got.
>
> Computer 1 is a Dell Optiplex w/ one onboard ethernet interface
> Computer 2 is an IBM NetVista w/ one onboard ethernet interface
>
> -- When I do 'ifconfig -a'
> -- Dell Optiplex --
> eth0 Link encap:Ethernet HW Addr: 00:40:4F:45:EA:7E
> inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0

[...]
> eth1 Link encap:Ethernet HW Addr: 00:C0:4F:C5:EA:7E
> inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0

[...]

2 NICs with the same address? No wonder you're having problems.


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brandon
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      01-30-2004, 05:15 PM
Thanks y'all. Turned out to be an IRQ problem. (IRQ 5) I disabled the
onboard sound in the BIOS and now the computers can ping each other.
 
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