A third party has implemented a small network and private BGP setup within one of our branches. We need to setup a eBGP peer relationship with this network. However we are both using the same private BGP AS number.
- One of us changes our BGP AS number - This isn't out of the question, and even if there is another solution but its overly complex we may still do this.
- BGP Confederation - In my research it appears that setting up a BGP Confederation between the peers might be a work around. The basic idea would be to sub-divide the shared private AS number into multiple private AS numbers. I'm not entirely sure yet whether this would solve the problem properly.
- Other solutions? It is here I'm looking for more advice on whether it is possible to work around this problem is an effective way.