'show ip bgp summary'

This is the full syntex entered in a Cisco router to check if BGP sessions are resetting ('sh ip bgp sum').

Some Cisco router>sh ip bgp sum
BGP table version is 41789917, main routing table version 41789917
55953 network entries (138593/218247 paths) using 13753160 bytes of memory
14683 BGP path attribute entries using 1936352 bytes of memory
14649 BGP route-map cache entries using 234384 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory

Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State
38.1.2.6        4   174 5686020 1199862 41789916    0    0 2w4d     
38.1.2.8        4   174 2439742 1216972 41789916    0    0 1w6d     
38.1.2.9        4   174  325708 1209727 41789916    0    0 1d15h    
38.1.2.13       4   174 2838950 1334068 41789916    0    0 4d04h    
38.1.3.1        4   174 1060204 1202658 41789916    0    0 2w4d     
38.1.3.2        4   174  804498 1213825 41789916    0    0 4d17h    
38.1.3.3        4   174  727411 1199408 41789916    0    0 1w4d     
38.1.3.4        4   174  565647 1220564 41789916    0    0 4d18h    
38.1.3.7        4   174  675974 1232307 41789916    0    0 1w4d     
38.1.3.10       4   174   55078 1039473 41789916    0    0 1d05h    
38.1.3.11       4   174   68747 1222957 41789916    0    0 6d06h    
38.1.3.12       4   174  860639  420167 41789916    0    0 00:08:17[**] 
38.1.3.14       4   174  448361 1244212 41789916    0    0 1w5d     
38.1.3.15       4   174  323984 1199574 41789916    0    0 1w1d     
38.1.3.16       4   174  148812  827398 41789916    0    0 2w4d     
38.1.3.17       4   174 3027727 1212807 41789916    0    0 1w2d

See were the [**] is, the BGP session with 38.1.3.12 reset 8 minutes and 17 seconds ago.

If no major BGP sessions have reset, as of late, check 'show hardware all', look at the uptime reading.