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AudioCodes SBC – IP Address change

Changing IP addresses on your AudioCodes SBC is a simple task. Or is it?

What if you have a load of static routes configured that will make you lose connection to the SBC if you start changing the IP address and default gateway?

A few days ago, I chatted with a customer who just finished an IP address change task. What should have been a quick change made them lose connection to the SBC. More specifically, this was a Mediant 1000, a late-night change.

Long story short, the customer drove to the office to power cycle the SBC and called me up in the evening. Lucky them, I was available and ready to help (Well, after bedtime stories and whatnot).

My first advice was to make changes like this while onsite(Or at least be able to go there if things go wrong). You can always end up in scenarios where a power cycle is the only solution.

After a bit of troubleshooting, we located the problem. The SBC had a few static routes configured that were causing the problems when they changed the IP address and default gateway; the static routes sent traffic to the old default gateway, as shown here.

So how do we fix that?

One solution is to take a laptop and connect it to the SBC in the same IP range, change IP, and then change the laptop IP address to be in the new IP range. Or you can do it the smart way by exporting the configuration, making changes to the parameters as shown here, and then uploading the configuration file again. Jobs done.

Log into the AudioCodes SBC and download the Configuration file.

Click on Actions in the top right of the SBC browser page and choose Configuration File.
Click on Download INI File.

Now open the configuration ini file in Notepad.

Navigate to InterfaceTable and change the IP address and the Default Gateway as you wish.

Then locate StaticRouteTable and make changes to the static routes here.

Be sure to change all the static routes depending on the interface to which you are changing IP addresses and save the file. Head back to the SBC and go to Actions and Configuration File. Click on Choose file and locate the reconfigured ini file. Click on Upload INI file.

The SBC will reboot with the newly uploaded ini file, and your IP address switch is complete. The SBC is now in the hands of the network people to configure the network side correctly. 🙂

I hope this blog post will make things easier for you. If you have any questions, please let me know.

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