Hi While upgrading platforms with redundant RP from1. IOS to XR 2. XR to XRshould the RP be treated separately and upgraded individually and then brought to sync or any other recommended method is there?

HiI see there are random BGP session flaps that occur between an IOS running and XR running router. It is a VPNv4 session and both routers have different uplinking MTU and are connected through IGP.some errors that were logged in during the flap areB...