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VZ networking/routing [message #230]

Sat, 15 October 2005 19:07

slhost
Messages: 3
Registered: October 2005

Junior Member

Can anyone explain how the networking/routing is setup in VZ and what technologies are used? Mainly, I'd like to know how venet0 is setup and what kind of device it is. I can see from scripts how VZ adds a static route and sends out arp replies to neighbors to update arp cache, but I suspect there is more to it than that. Any help in understanding this would be great because I hate being clueless about a product I use.

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Re: VZ networking/routing [message #231 is a reply to message #230]

Sun, 16 October 2005 08:13

vaverin
Messages: 708
Registered: September 2005

Senior Member

venet looks like a virtual Point-to-Point connection between VPS and VE0 (hostOS)
So that VPS IP can be seen from outside you need to add the route on VE0

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Re: VZ networking/routing [message #232 is a reply to message #231]

Sun, 16 October 2005 14:28

slhost
Messages: 3
Registered: October 2005

Junior Member

The thing that boggles my mind is how you can reach VZPP on the IP assigned to a VE when the VE isn't mounted. I've tried setting up a virtual network device like VZ does including setting up the route with a src IP of that virtual device and sent out arp notices as well like I see they do. Nothing I do allows me to trace the IP to the src IP. I'm just trying to get a grip on this because it's very interesting to me. Below are commands I've used to test this.

1. Create a virtual device first, we'll call it virt0 and bring it up.
2. ip route add 192.168.1.2 dev virt0 src 192.168.1.3
3. ip neigh add proxy 192.168.1.2 dev eth0
4. /usr/sbin/arpsend -c 1 -w 1 -U -i 192.168.1.2 -e 192.168.1.2 virt0

Perhaps this goes beyond the discussions of this board, but I thought someone might know here how exactly to set something like this up for an example of how it works with VZ.

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Re: VZ networking/routing [message #265 is a reply to message #232]

Thu, 20 October 2005 18:05

dev
Messages: 1693
Registered: September 2005
Location: Moscow

Senior Member

heh

VZPP is commercial VZ feature, sorry... it is our small know-how ... Embarassed

do you want to implement a similar offline management?

http://static.openvz.org/userbars/openvz-developer.png

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Re: VZ networking/routing [message #284 is a reply to message #230]

Tue, 25 October 2005 15:43

slhost
Messages: 3
Registered: October 2005

Junior Member

Yes, I'd like to implement a similiar setup for my own benefit. I can certainly come up with other ideas, but this interests me and I'd like to use it if I can get it to work.

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