How do the virtual interfaces work w/ different subnets if you are connected via the same physical interface?
ie. Do you have to be plugged into a switch that can handle different subnets on the same interface?
Jason Tower wrote:
what you are describing is a virtual interface, and it's a snap. for a quick and dirty setup, you can simply run the following:
[EMAIL PROTECTED] root]# ifconfig eth0:0 10.1.1.1
which results in something like the following:
[EMAIL PROTECTED] root]# ifconfig eth0 Link encap:Ethernet HWaddr 00:A0:C9:5A:DF:F7 inet addr:10.0.0.100 Bcast:10.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:454545 errors:0 dropped:0 overruns:0 frame:0 TX packets:311037 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:94017376 (89.6 Mb) TX bytes:31798276 (30.3 Mb) Interrupt:10 Base address:0xdc00 Memory:ef201000-ef201038
eth0:0 Link encap:Ethernet HWaddr 00:A0:C9:5A:DF:F7 inet addr:10.1.1.1 Bcast:10.1.1.255 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:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:10 Base address:0xdc00 Memory:ef201000-ef201038
to make this permanent, copy /etc/sysconfig/network-scripts/ifcfg-eth0 to ifcfg-eth0:0 and modify the file contents with the desired info. you can have several virtual interfaces, all on different subnets. good luck!
jason
On Wednesday 18 June 2003 13:29, Michael Winslow Czeiszperger wrote:
Hi--
I'm working on a new feature for our load testing product and have been stumped on a Linux configuration issue. The product needs to send out HTTP requests from multiple IP addresses in order to fake out IP-based load balancers. To do this I need to configure a Linux box to have multiple IP addresses on the same network card, but for the life of me I can't find the HOWTO or docs to do this. Strangely enough it seemed fairly easy on Windows :-(
Any pointers to the right documentation would be greatly appreciated...
Thanks,
-------------------------------- Michael Czeiszperger czei at webperformanceinc dot com Web Performance, Inc. 9207 Baileywick Road, Suite 203 Raleigh, NC 27615 919-845-7601
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