Create Linux Bridge

[subhasmita das]

Hello,

I am new and trying to use proxmox, but I need a tutorial or help to create a Linux bridge for the vm but when i give IPV4 address and bridge ports its not creata linux bridge
Help please me?





Thanks

 

[bobmc]

It appears to me that enp9s0 already has the IP address 172.9.79.242 assigned? as you are accessing the GUI interface on that IP?

 

[subhasmita das]

It appears to me that enp9s0 already has the IP address 172.9.79.242 assigned? as you are accessing the GUI interface on that IP?

i dont know to acessing the GUI interface?

 

[subhasmita das]

i dont know to acessing the GUI interface?

any body please help me?

 

[bobmc]

just try giving vmbr0 a different IP address, does that work?

 

[Chris]

Hi,
please post the output of cat /etc/network/interfaces. It seems like you assigned an IP to the interface itself, while trying to attach it to a bridge as bridge port (apart from being the same IP address as you already have for your host).

 

[subhasmita das]

i go to the /etc/network/interfaces.d/*
and its comming something like this





and then i add the network and NAT setting its something look like this

Hi,
please post the output of cat /etc/network/interfaces. It seems like you assigned an IP to the interface itself, while trying to attach it to a bridge as bridge port (apart from being the same IP address as you already have for your host).

could you please help me to relosved the issue

 

[subhasmita das]

Hi,
please post the output of cat /etc/network/interfaces. It seems like you assigned an IP to the interface itself, while trying to attach it to a bridge as bridge port (apart from being the same IP address as you already have for your host).

 

[subhasmita das]

could help me to what i put in ipv4 and gateway bridge port i didint understand it could help me to creat linux bridge

 

[Chris]

There are several things to adapt here. First of all, what is your goal here? Do you want a bridged network setup or a NAT setup?

For a bridged setup do not configure the IP and gateway (as well as the route which you don't need as this will be the default given by the gateway) on the interface itself. You want to do that on the bridge. See for example the bridged setup in our docs https://pve.proxmox.com/pve-docs/pve-admin-guide.html#_default_configuration_using_a_bridge.

On the other hand, if your goal is to create a setup with the VMs being behind a NAT, you will have to setup the IP address and default gateway on the interface, but don't attach it to the bridge. The bridge will get a static IP address from a different private subnet (e.g.10.10.10.1/24) and you will setup the iptables rules to rewrite the source IP to the one on the interface for packets leaving that interface after routing. The example config can be found here https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysadmin_network_masquerading.