How to configure Static Routes for SIP trunk on Debian Server hosted on VMware

[vincent Kavila]

I have a Debian 10 hosted on VMware, I needed to create static routes on the VM for my SIP trunk, anyone with an idea on how to go about it?

 

[SweetAction]

3CX itself doesn't handle routing, so either add it static in /etc/network/interfaces (or network manager if using that) or better would be to add it to the upstream gateway and/or DHCP.

I.e., not a 3CX configuration item, it's done in the OS.

 

[vincent Kavila]

This worked for me:
The first option is edit /etc/network/interfaces file.

Following is the sample Debian (Ubuntu) network interface configuration file with permanent static route entries.

# The primary network interface
auto ens192
allow-hotplug ens192
iface ens192 inet static
address 192.168.221.54/24
gateway 192.168.221.1
dns-nameservers 82.99.137.41 212.158.133.41
dns-search secar.cz
up ip route del 192.168.0.0/24 via 192.168.221.1 dev ens192
up ip route add 192.168.0.0/24 via 192.168.221.1 dev ens192
up ip route del 192.168.1.0/24 via 192.168.221.1 dev ens192
up ip route add 192.168.1.0/24 via 192.168.221.1 dev ens192

 

[TheodorosG_3CX]

Good to know you found your solution however keep in mind that this depends on the OS level.

 

[UrielFoster]

To create static routes on Debian 10 you will need to use the `ip route add` command. Determine the destination IP address and gateway for your SIP trunk. Open a terminal on your Debian 10 virtual machine. This command tells Debian 10 that all packets addressed to the 192.168.1.0/24 network should be sent through the 192.168.0.1 gateway.

 

[OlegR_3CX]

You could see this discussion too.

 

[kjones120320]

Configuring Static Routes for a SIP Trunk on Debian (VMware)​

Prerequisites​

• Running Debian server on VMware.
• Root or sudo access.

Steps​

1. Log In:
   • Start your Debian server in VMware.
   • Log in with root or sudo privileges.
2. Identify Network Interface:
   • Run ip a to find your network interface (e.g., eth0).
3. Edit Network Configuration:
   • Open the network configuration file:
     sh
     Copy code
     sudo nano /etc/network/interfaces
4. Add Static Route:
   • Under the relevant interface, add the static route. For example:
     plaintext
     Copy code
     auto eth0
     iface eth0 inet static
     address 192.168.1.2
     netmask 255.255.255.0
     gateway 192.168.1.1
     up route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.1
     down route del -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.1
5. Save and Apply:
   • Save the file (in nano: CTRL + X, Y, Enter).
   • Restart networking:
     sh
     Copy code
     sudo systemctl restart networking
   • Or reboot the server:
     sh
     Copy code
     sudo reboot
6. Verify the Route:
   • Check the static route:
     sh
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     ip route

Example Configuration​

For eth0, IP 192.168.1.2, gateway 192.168.1.1, routing to 192.168.2.0/24:
plaintext
Copy code
auto eth0
iface eth0 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.1.1
up route add -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.1
down route del -net 192.168.2.0 netmask 255.255.255.0 gw 192.168.1.1
This guide helps you set up static routes for your SIP trunk on a Debian server in VMware quickly and efficiently.