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Solved
adding a 2nd network card prob
Posted on 1998-12-16
I'm running Linux Red Hat 5.2 with one network card (3Com 900) .At this point, it works: i can ping my router, surf on the net ...
But yesterday i tried to add another card (3Com905) (not 905B as i know it doesn't fit) ; The first one is IRQ 11 and the second one is IRQ 9 and i haven't any conflict with another stuff. I then used the Network configuration tool to setup this new card. and then restart. But after that i was enable to ping another station or my router ... I was just able to ping myself.
Please tell me what's wrong ...
But yesterday i tried to add another card (3Com905) (not 905B as i know it doesn't fit) ; The first one is IRQ 11 and the second one is IRQ 9 and i haven't any conflict with another stuff. I then used the Network configuration tool to setup this new card. and then restart. But after that i was enable to ping another station or my router ... I was just able to ping myself.
Please tell me what's wrong ...
[X]
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16 Comments
I want some more information.
Please use 'ifconfig'
and netstat -nr and paste the information in a box.
Znx,
iAmano
Please use 'ifconfig'
and netstat -nr and paste the information in a box.
Znx,
iAmano
check /var/log/boot.msg
check /proc/{devices,interrupts}
Usually you need the secound card to be installed using modules.
check /proc/{devices,interrupts}
Usually you need the secound card to be installed using modules.
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ahoffmann,
/var/log/boot.msg doesn't exist. /var/log/boot.log is empty.
When i've only one card. it's on Interupt 9
But when i add the second one, the first jump to IRQ 11 and the second goes to IRQ 9.
/var/log/boot.msg doesn't exist. /var/log/boot.log is empty.
When i've only one card. it's on Interupt 9
But when i add the second one, the first jump to IRQ 11 and the second goes to IRQ 9.
talwyn : Yes, i'm using Lilo to boot
here is the result of cat /proc/{devices, interrupts}
The first one is with 2 cards and the second one is with one card:
TWO CARDS:
Character devices:
1 mem
2 pty
3 ttyp
4 ttyp
5 cua
7 vcs
10 misc
Block devices:
1 ramdisk
2 fd
3 ide0
9 md
0: 86523 timer
1: 189 keyboard
2: 0 cascade
8: 1 + rtc
9: 252 eth1
11: 85 eth0
12: 175 PS/2 Mouse
13: 1 math error
14: 5587 + ide0
AND WITH ONE CARD :
Character devices:
1 mem
2 pty
3 ttyp
4 ttyp
5 cua
7 vcs
10 misc
Block devices:
1 ramdisk
2 fd
3 ide0
9 md
0: 16311 timer
1: 374 keyboard
2: 0 cascade
8: 1 + rtc
9: 110 eth0
12: 1102 PS/2 Mouse
13: 1 math error
14: 5538 + ide0
here is the result of cat /proc/{devices, interrupts}
The first one is with 2 cards and the second one is with one card:
TWO CARDS:
Character devices:
1 mem
2 pty
3 ttyp
4 ttyp
5 cua
7 vcs
10 misc
Block devices:
1 ramdisk
2 fd
3 ide0
9 md
0: 86523 timer
1: 189 keyboard
2: 0 cascade
8: 1 + rtc
9: 252 eth1
11: 85 eth0
12: 175 PS/2 Mouse
13: 1 math error
14: 5587 + ide0
AND WITH ONE CARD :
Character devices:
1 mem
2 pty
3 ttyp
4 ttyp
5 cua
7 vcs
10 misc
Block devices:
1 ramdisk
2 fd
3 ide0
9 md
0: 16311 timer
1: 374 keyboard
2: 0 cascade
8: 1 + rtc
9: 110 eth0
12: 1102 PS/2 Mouse
13: 1 math error
14: 5538 + ide0
Ok, the kernel has it seen.
Now we came to iAmano's 1'st comment: what is the result of
ifconfig -a
netstat -rn
Now we came to iAmano's 1'st comment: what is the result of
ifconfig -a
netstat -rn
ok, here are results :
with 2 cards:
IFCONFIG -a:
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:203 errors:0 dropped:0 overruns:0 frame:0
TX packets:203 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
eth0 Link encap:Ethernet HWaddr 00:10:5A:49:7D:FD
inet addr:195.28.198.254 Bcast:195.28.198.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:32
collisions:0
Interrupt:11 Base address:0x6500
eth1 Link encap:Ethernet HWaddr 00:60:08:51:7E:34
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:34 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Interrupt:9 Base address:0x6600
NETSTAT -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
195.28.198.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 3584 0 0 lo
10.0.0.0 0.0.0.0 255.0.0.0 U 1500 0 0 eth1
0.0.0.0 195.28.198.250 0.0.0.0 UG 1500 0 0 eth0
With one card :
IFCONFIG -a
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:88 errors:0 dropped:0 overruns:0 frame:0
TX packets:88 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
eth0 Link encap:Ethernet HWaddr 00:60:08:51:7E:34
inet addr:195.28.198.254 Bcast:195.28.198.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:270 errors:0 dropped:0 overruns:0 frame:0
TX packets:280 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Interrupt:9 Base address:0x6500
NETSTAT -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
195.28.198.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 3584 0 0 lo
0.0.0.0 195.28.198.250 0.0.0.0 UG 1500 0 0 eth0
Thanks.
with 2 cards:
IFCONFIG -a:
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:203 errors:0 dropped:0 overruns:0 frame:0
TX packets:203 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
eth0 Link encap:Ethernet HWaddr 00:10:5A:49:7D:FD
inet addr:195.28.198.254 Bcast:195.28.198.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:32 errors:0 dropped:0 overruns:0 carrier:32
collisions:0
Interrupt:11 Base address:0x6500
eth1 Link encap:Ethernet HWaddr 00:60:08:51:7E:34
inet addr:10.0.0.1 Bcast:10.255.255.255 Mask:255.0.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:34 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Interrupt:9 Base address:0x6600
NETSTAT -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
195.28.198.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 3584 0 0 lo
10.0.0.0 0.0.0.0 255.0.0.0 U 1500 0 0 eth1
0.0.0.0 195.28.198.250 0.0.0.0 UG 1500 0 0 eth0
With one card :
IFCONFIG -a
lo Link encap:Local Loopback
inet addr:127.0.0.1 Bcast:127.255.255.255 Mask:255.0.0.0
UP BROADCAST LOOPBACK RUNNING MTU:3584 Metric:1
RX packets:88 errors:0 dropped:0 overruns:0 frame:0
TX packets:88 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
eth0 Link encap:Ethernet HWaddr 00:60:08:51:7E:34
inet addr:195.28.198.254 Bcast:195.28.198.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:270 errors:0 dropped:0 overruns:0 frame:0
TX packets:280 errors:0 dropped:0 overruns:0 carrier:0
collisions:0
Interrupt:9 Base address:0x6500
NETSTAT -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
195.28.198.0 0.0.0.0 255.255.255.0 U 1500 0 0 eth0
127.0.0.0 0.0.0.0 255.0.0.0 U 3584 0 0 lo
0.0.0.0 195.28.198.250 0.0.0.0 UG 1500 0 0 eth0
Thanks.
looks perfect.
silly question: with 2 cards your 195.28.198.0 net is now on the other card, did you switch your cables?
Otherwise check with tcpdump what's going through the tcp/ip stack when you ping the outside world.
silly question: with 2 cards your 195.28.198.0 net is now on the other card, did you switch your cables?
Otherwise check with tcpdump what's going through the tcp/ip stack when you ping the outside world.
Great !!
hehe, it was not a silly question, i'm just a stupid guy :)
In fact I'm a newbie with Linux' administration. Please just tell me how you saw that my 195.28.198.0 is on the other card.
Just post an answer and i'll grade it .
hehe, it was not a silly question, i'm just a stupid guy :)
In fact I'm a newbie with Linux' administration. Please just tell me how you saw that my 195.28.198.0 is on the other card.
Just post an answer and i'll grade it .
I must say, your config looks ok. On the other hand check the date of your 3com driver. There may be a later driver that solves the problem. When you used one card does it matter
which one you use?
I also suggest fixing which card is which using lilo
by adding using append command
HG
which one you use?
I also suggest fixing which card is which using lilo
by adding using append command
HG
simple answer: switch cables according to IPs assigned to cards
How to identify:
cat /proc/devices
will tell you which NIC got which name (eth0, eth1, etc.)
ifconfig -a
tells you which NIC (with which IRQ) was setup whithwhich IP.
So you finally know which cable must be plugged to which NIC.
AFAIK the Linux Kernel drivers cannot be told to use a user-defined sequence of NICS, they are scanned and identified automatically.
It'S not a bug, it's a feature.
How to identify:
cat /proc/devices
will tell you which NIC got which name (eth0, eth1, etc.)
ifconfig -a
tells you which NIC (with which IRQ) was setup whithwhich IP.
So you finally know which cable must be plugged to which NIC.
AFAIK the Linux Kernel drivers cannot be told to use a user-defined sequence of NICS, they are scanned and identified automatically.
It'S not a bug, it's a feature.
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