Dell EMC Configuration Guide for the S3100 Series 9.14.2.4

Example of the show ip bgp neighbor Command to View Last and Bad PDUs

DellEMC(conf-router_bgp)#do show ip bgp neighbors 1.1.1.2

BGP neighbor is 1.1.1.2, remote AS 2, external link
  BGP version 4, remote router ID 2.4.0.1
  BGP state ESTABLISHED, in this state for 00:00:01
  Last read 00:00:00, last write 00:00:01
  Hold time is 90, keepalive interval is 30 seconds
  Received 1404 messages, 0 in queue
    3 opens, 1 notifications, 1394 updates
    6 keepalives, 0 route refresh requests
  Sent 48 messages, 0 in queue
    3 opens, 2 notifications, 0 updates
    43 keepalives, 0 route refresh requests
  Minimum time between advertisement runs is 30 seconds
  Minimum time before advertisements start is 0 seconds

Capabilities received from neighbor for IPv4 Unicast :
  MULTIPROTO_EXT(1)
  ROUTE_REFRESH(2)
  CISCO_ROUTE_REFRESH(128)

Capabilities advertised to neighbor for IPv4 Unicast :
  MULTIPROTO_EXT(1)
  ROUTE_REFRESH(2)
  CISCO_ROUTE_REFRESH(128)
For address family: IPv4 Unicast
BGP table version 1395, neighbor version 1394
Prefixes accepted 1 (consume 4 bytes), 0 withdrawn by peer
Prefixes advertised 0, rejected 0, 0 withdrawn from peer

Connections established 3; dropped 2
Last reset 00:00:12, due to Missing well known attribute

Notification History
  'UPDATE error/Missing well-known attr' Sent : 1 Recv: 0
  'Connection Reset' Sent : 1 Recv: 0
 
  Last notification (len 21) sent 00:26:02 ago
    ffffffff ffffffff ffffffff ffffffff 00160303 03010000
  Last notification (len 21) received 00:26:20 ago
    ffffffff ffffffff ffffffff ffffffff 00150306 00000000
  Last PDU (len 41) received 00:26:02 ago that caused notification to be issued
    ffffffff ffffffff ffffffff ffffffff 00290200 00000e01 02040201 00024003 04141414 0218c0a8
    01000000
Local host: 1.1.1.1, Local port: 179
Foreign host: 1.1.1.2, Foreign port: 41758