Greetings all!
I just got a colocated server space and the ISP has given me an IP address and a
routable /29 subnet. Here's a partial snippet of the info they gave me (with
the real addressess changed for privacy)
==== WAN Address
Customer IP Address : 100.0.33.14
Netmask : 255.255.255.248
Broadcast Address : 100.0.33.15
Default Gateway : 100.0.33.9
==== Routed Network
IP Address Type : 100.0.43.152/29 Class-C Subnet
Number of IP Addrs : 6
Domain Name : example.net
Customer IP Addresses : 100.0.43.{153 thru 158}
Netmask : 255.255.255.248
Broadcast Address : 100.0.43.159
And they provided this chart:
-
|
| +----------+
| | Customer |
|------| Host #1 |
| .154 | |
| +----------+
- WAN - - Subnet - |
+------+ Net/Mask +----------+ Net/Mask | +----------+
| ISP | 100.0.33.8 | Customer | 100.0.43.152 | | Customer |
|Router|---- /29 -----|Colocation|---- /248 ----|------| Host #2 |
| | .9 .14 | Router | .153 | .155 | |
+------+ +----------+ | +----------+
** REQUIRED ** |
** DEVICE ** | +----------+
| | Customer |
|------| Host #n |
| .156 | |
| +----------+
|
-
I have a single server with Fedora Core3 (x86-64 2.6.10-1 kernel) installed, and
my intent is to use the iproute2 tools to set up aliases for .154, .155, .156,
etc. and then use IP Virtual Hosts in Apache.
So, to my question. I could get a router for routing the /29 subnet as the ISP
suggests, but can I use my Linux machine to do this? Can I mount eth0 as
100.0.33.14 and then setup the 100.0.43.152-158 as aliases and write the routing
so that everything works? I have read chapters 3 and 4 of the LARTC, and I
think it may be possible, but it's just not clicking yet as to how I might be
able to do this.
And to add one last twist to this... let's say that I can do the above, what if
I wanted to take one of those IP's from the /29 subnet and route it on to
another system plugged into my eth1 while maintaining all of the other IP's as
aliases?
Am I dreaming? Can you help me?
Thanks!
Ray
I think you can just make aliases for all 8 ips (Yes i said 8) ifconfig eth0:0 100.0.43.152 netmask 255.255.255.255 up ifconfig eth0:1 100.0.43.153 netmask 255.255.255.255 up ifconfig eth0:2 100.0.43.154 netmask 255.255.255.255 up ... ifconfig eth0:7 100.0.43.159 netmask 255.255.255.255 up On Fri, 4 Feb 2005 01:20:03 -0800, 3ds@norwesters.net <3ds@norwesters.net> wrote: > Greetings all! > I just got a colocated server space and the ISP has given me an IP address and a > routable /29 subnet. Here's a partial snippet of the info they gave me (with > the real addressess changed for privacy) > > ==== WAN Address > Customer IP Address : 100.0.33.14 > Netmask : 255.255.255.248 > Broadcast Address : 100.0.33.15 > Default Gateway : 100.0.33.9 > ==== Routed Network > IP Address Type : 100.0.43.152/29 Class-C Subnet > Number of IP Addrs : 6 > Domain Name : example.net > Customer IP Addresses : 100.0.43.{153 thru 158} > Netmask : 255.255.255.248 > Broadcast Address : 100.0.43.159 > > And they provided this chart: > - > | > | +----------+ > | | Customer | > |------| Host #1 | > | .154 | | > | +----------+ > - WAN - - Subnet - | > +------+ Net/Mask +----------+ Net/Mask | +----------+ > | ISP | 100.0.33.8 | Customer | 100.0.43.152 | | Customer | > |Router|---- /29 -----|Colocation|---- /248 ----|------| Host #2 | > | | .9 .14 | Router | .153 | .155 | | > +------+ +----------+ | +----------+ > ** REQUIRED ** | > ** DEVICE ** | +----------+ > | | Customer | > |------| Host #n | > | .156 | | > | +----------+ > | > - > > I have a single server with Fedora Core3 (x86-64 2.6.10-1 kernel) installed, and > my intent is to use the iproute2 tools to set up aliases for .154, .155, .156, > etc. and then use IP Virtual Hosts in Apache. > > So, to my question. I could get a router for routing the /29 subnet as the ISP > suggests, but can I use my Linux machine to do this? Can I mount eth0 as > 100.0.33.14 and then setup the 100.0.43.152-158 as aliases and write the routing > so that everything works? I have read chapters 3 and 4 of the LARTC, and I > think it may be possible, but it's just not clicking yet as to how I might be > able to do this. > > And to add one last twist to this... let's say that I can do the above, what if > I wanted to take one of those IP's from the /29 subnet and route it on to > another system plugged into my eth1 while maintaining all of the other IP's as > aliases? > > Am I dreaming? Can you help me? > > Thanks! > Ray > > _______________________________________________ > LARTC mailing list / LARTC@mailman.ds9a.nl > http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/ > -- Bla bla