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Posts: 14
Joined: Mon May 04, 2015 7:21 pm
Location: Southern Europe

Stacking CRS

Sat Jul 18, 2015 6:18 pm


I'd like to put one CRS behind another CRS mostly for testing stuff.

The first CRS got an yet unused public address range (/29) on the uplink port so I'd like to use this on the 2nd CRS.

Here's an example
Uplink (/29 subnet 78.xx.xx.xx/29) -> CRS -> CRS2

How do I set this up on the 2nd CRS and will I also have to add that subnet in the first CRS's ip > address section?
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Posts: 1053
Joined: Fri Aug 10, 2012 6:46 am
Location: Jackson, MS, USA

Re: Stacking CRS

Sat Jul 18, 2015 6:44 pm

You will need to add a transit subnet between the two CRS switches - it can be public or private - both will route the public /29 properly to the internet.

So something like to connect the CRS switches

And then you will need to add the /29 on the second CRS with a default route pointing towards the 1st CRS.

That's pretty much it!
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