debug ip bgp [ip-address | peer-group peer-group-name] notifications [in |out]• View information about BGP updates and filter by prefix name.EXEC Privilege modedebug ip bgp [ip-address | peer-group peer-group-name] updates [in | out][prefix-list name]• Enable soft-reconfiguration debug.EXEC Privilege modedebug ip bgp {ip-address | peer-group-name} soft-reconfigurationTo enhance debugging of soft reconfig, use the bgp soft-reconfig-backup command only whenroute-refresh is not negotiated to avoid the peer from resending messages.In-BGP is shown using the show ip protocols command.Dell Networking OS displays debug messages on the console. To view which debugging commands areenabled, use the show debugging command in EXEC Privilege mode.To disable a specific debug command, use the keyword no then the debug command. For example, todisable debugging of BGP updates, use no debug ip bgp updates command.To disable all BGP debugging, use the no debug ip bgp command.To disable all debugging, use the undebug all command.Storing Last and Bad PDUsDell Networking OS stores the last notification sent/received and the last bad protocol data unit (PDU)received on a per peer basis. The last bad PDU is the one that causes a notification to be issued.In the following example, the last seven lines shown in bold are the last PDUs.Example of the show ip bgp neighbor Command to View Last and Bad PDUsDell(conf-router_bgp)#do show ip bgp neighbors 1.1.1.2BGP neighbor is 1.1.1.2, remote AS 2, external linkBGP version 4, remote router ID 2.4.0.1BGP state ESTABLISHED, in this state for 00:00:01Last read 00:00:00, last write 00:00:01Hold time is 90, keepalive interval is 30 secondsReceived 1404 messages, 0 in queue3 opens, 1 notifications, 1394 updates6 keepalives, 0 route refresh requestsSent 48 messages, 0 in queue3 opens, 2 notifications, 0 updates43 keepalives, 0 route refresh requestsMinimum time between advertisement runs is 30 secondsMinimum time before advertisements start is 0 secondsCapabilities received from neighbor for IPv4 Unicast :MULTIPROTO_EXT(1)ROUTE_REFRESH(2)CISCO_ROUTE_REFRESH(128)Capabilities advertised to neighbor for IPv4 Unicast :Border Gateway Protocol IPv4 (BGPv4) 221
