Hello all, I would be grateful if you could direct me, provide me some insight to figure out where those errors/alarms emanate from. In my test environment I did not encounter those errors, only upon the actual live migration , while bringing the BGP sessions with the peers up. Some where coming up some not. The 1st error was : ... filters, line 2208: Can't add/delete non-pair The 2nd error was: ...R15814x2: END-OF-RR received without prior BEGIN-OF-RR, ignoring    R35283x1: BEGIN-OF-RR received before END-OF-RIB, ignoring R13002x1: BEGIN-OF-RR received before END-OF-RIB, ignoring filters, line 1645: ~ applied on unknown type pair **** Problem with filters? I found also : * bgp_refresh_begin - start incoming enhanced route refresh sequence * @p: BGP instance * * This function is called when an incoming enhanced route refresh sequence is * started by the neighbor, demarcated by the BoRR packet. The function updates * the load state and starts the routing table refresh cycle. Note that graceful * restart also uses routing table refresh cycle, but RFC 7313 and load states * ensure that these two sequences do not overlap. */ void bgp_refresh_begin(struct bgp_proto *p) { if (p->load_state == BFS_LOADING) { log(L_WARN "%s: BEGIN-OF-RR received before END-OF-RIB, ignoring", p->p.name); return; } p->load_state = BFS_REFRESHING; rt_refresh_begin(p->p.main_ahook->table, p->p.main_ahook); } /** Thanks a lot for your help! Regards, Irène -- Irene Lalioti Network Engineer Fondation RESTENA 2, avenue de l'Université L-4365 Esch/Alzette Tel: +352 424409 1 Fax: +352 422473