received from neighbor X.X.X.X active 2/2 (peer in wrong AS) 0 bytes

[umeshpathrwal10]

Hey there .... hope you are doing great. Need your assistance, am stuck with an issue. Please suggest what could be the issue.
 
Topology Juniper(AS9498) -------(AS137671)
  
Cisco configuration matches as numbers on BGP speakers on juniper  and vice versa.
-->>>Juniper-BGP notification :- received NOTIFICATION code 2 (Open Message Error) sub code 0 (unspecified error)
and on Cisco -%BGP-3-NOTIFICATION: received from neighbor X.X.X. X active 2/2 (peer in wrong AS) 0 bytes 

[paul driver]

Duplicate post

[umeshpathrwal10]

Hi

Cross checked neighbor peer, configuration is correct.

I am wondering
Cisco notification has (peer in wrong AS) 2/4 bytes etc but in this case
it's 0 bytes. Why it is so??

[Teck Sing]

Hi,

That's because the remote AS configured is different from the actual AS number on peer. 

- Teck Sing