-
Senior Member
registered user
Dual NICs (wired)
OK, I teach Computer Science at a school where the tech dept decided to put my linux classes on a separate network. So, in their infinte wisdom, they added a 2nd Network Interface Card (NIC) to each of my linux boxes (25 student stations + 1 teacher station with a projector). What's nice about this is that the new NICs are GigaBit, what's not nice is that they are going to be able to block access to other parts of the school network (b/c I have infamous hackers in my class this year).
Anyway, the problems I'm having are:
(1) how do I know which NIC is being used?
(2) how do I disable one NIC and enable another NIC when necessary?
(3) is there a configuration file where the settings from netcardconfig are saved that I can simply delete and start over?
(4) if I use netcardconfig w/o DHCP can I use any IP I feel like (I know the netmask, braodcast, default gateway and dns)?
You see, I used netcardconfig to configure eth0 as usual, but apparently, its eth1 that I should have configured as the new NIC. So, now when I run ifconfig, both NICs come up + localhost, but I don't know which is being used as default.
TIA,
AJG
-
Senior Member
registered user
Re: Dual NICs (wired)
Originally Posted by
A. Jorge Garcia
Anyway, the problems I'm having are:
(1) how do I know which NIC is being used?
(2) how do I disable one NIC and enable another NIC when necessary?
(3) is there a configuration file where the settings from netcardconfig are saved that I can simply delete and start over?
(4) if I use netcardconfig w/o DHCP can I use any IP I feel like (I know the netmask, braodcast, default gateway and dns)?
(1) maybe via 'ifconfig'?
(2) see answer 3 :-p
(3) see answer 4 :-p :-p
(4) the file you are looking for is (should be) '/etc/network/interfaces'
Here's mine with a 192.168.0.14 static address:
Code:
# /etc/network/interfaces -- configuration file
# The loopback interface
# automatically added when upgrading
auto lo eth0
iface lo inet loopback
iface eth0 inet static
address 192.168.0.14
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
gateway 192.168.0.1
The 'iface eth...' section is which that matters.
Edit the file and then issue 'update-rc.d networking defaults' to keep it persistent at every reboot.
HTH!
-
Senior Member
registered user
Oh, thank God! Finally, the file I needed! I knew there was a config like that somewhere, I just needed someone to kickstart my memory.
Thanx, you're a God send!
Regards,
AJG
-
Senior Member
registered user
OK, so my /etc/network/interfaces file only has
Code:
auto lo eth1
iface lo ...
iface eth1 ...
...
...
...
...
...
And all is well!
Thanx,
AJG
Similar Threads
-
By sknuky in forum Networking
Replies: 0
Last Post: 10-14-2006, 06:36 PM
-
By honegod in forum Networking
Replies: 6
Last Post: 09-13-2005, 02:50 PM
-
By ghostblaze in forum General Support
Replies: 0
Last Post: 10-27-2004, 11:09 PM
-
By CodeOptimist in forum Networking
Replies: 0
Last Post: 03-18-2004, 11:25 PM
-
By gkp in forum General Support
Replies: 5
Last Post: 07-10-2003, 07:09 PM
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
A-Tech 8GB DDR3 1600 PC3-12800 Laptop SODIMM 204-Pin Memory RAM PC3L DDR3L 1x 8G
$13.99
Samsung 16GB 2Rx4 PC4-2133P DDR4-17000 1.2V RDIMM ECC Registered Server Memory
$16.29
HyperX FURY DDR3 8GB 16GB 32GB 1600 MHz PC3-12800 Desktop RAM Memory DIMM 240pin
$12.90
A-Tech 16GB 2 x 8GB PC3-12800 Laptop SODIMM DDR3 1600 Memory RAM PC3L 16G DDR3L
$27.98
A-Tech 8GB PC3-12800 Desktop DDR3 1600 MHz Non ECC 240-Pin DIMM Memory RAM 1x 8G
$13.99
Kingston HyperX FURY DDR3 8GB 16GB 32G 1600 1866 1333 Desktop Memory RAM DIMM
$13.25
8GB PC3L-12800S 1600MHz SODIMM DDR3 RAM | Grade A
$12.00
TeamGroup 16GB PC4 2666 PC4 21300 DDR4 2666MHz 1.2V CL19 Desktop RAM Memory
$27.95
A-Tech 256GB 4x 64GB 4Rx4 PC4-19200 ECC Load Reduced LRDIMM Server Memory RAM
$287.96
A-Tech 64GB 4x 16GB 2Rx4 PC4-17000R DDR4 2133MHz ECC REG RDIMM Server Memory RAM
$87.96