Column tcpListenDrop
Source netstat -s
Description
TCP Listen Drop indicates that packets are arriving faster than the network card can pull them off. If this counter is increasing then there is a serious network issue.

Caveats

srtdate_netstat-s: 20041027101612	JST "netstat -s -P tcp"

TCP	tcpRtoAlgorithm     =     4	tcpRtoMin           =  3000
	tcpRtoMax           = 30000	tcpMaxConn          =    -1
	tcpActiveOpens      =3209174	tcpPassiveOpens     =599093
	tcpAttemptFails     = 76223	tcpEstabResets      = 59012
	tcpCurrEstab        =  2714	tcpOutSegs          =1217818546
	tcpOutDataSegs      =797648505	tcpOutDataBytes     =3034883162
	tcpRetransSegs      =211639	tcpRetransBytes     =187422280
	tcpOutAck           =419931640	tcpOutAckDelayed    =69883845
	tcpOutUrg           =  1130	tcpOutWinUpdate     =1641829
	tcpOutWinProbe      =   109	tcpOutControl       =7926786
	tcpOutRsts          =507298	tcpOutFastRetrans   = 44417
	tcpInSegs           =1377378757
	tcpInAckSegs        =619560049	tcpInAckBytes       =3007279722
	tcpInDupAck         =10724423	tcpInAckUnsent      =     0
	tcpInInorderSegs    =1123589652	tcpInInorderBytes   =1219088115
	tcpInUnorderSegs    =255638	tcpInUnorderBytes   =241654496
	tcpInDupSegs        =3195913	tcpInDupBytes       =30009260
	tcpInPartDupSegs    =  1464	tcpInPartDupBytes   =698259
	tcpInPastWinSegs    =   866	tcpInPastWinBytes   =6438940
	tcpInWinProbe       = 25910	tcpInWinUpdate      =   102
	tcpInClosed         = 95657	tcpRttNoUpdate      =221378
	tcpRttUpdate        =616065611	tcpTimRetrans       = 48958
	tcpTimRetransDrop   =  2150	tcpTimKeepalive     =7624379
	tcpTimKeepaliveProbe=3444060	tcpTimKeepaliveDrop =   277
	tcpListenDrop       =   182	tcpListenDropQ0     =     0
	tcpHalfOpenDrop     =     0	tcpOutSackRetrans   =139993

enddate_netstat-s: 20041027101612	JST