Hi Seebeth, Are you trying to configure iBGP or eBGP ? What is AS number you configured on other side ? this is a NOTIFICATION message from BGP. Kindly share the output of otherside Router
Same am trying to make neighbour router is same as number
Check AS number on remote router you want to establish neighborship with
I have been through this issue
better you check the config on each routers “show run | se bgp”
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