[j-nsp] Virtual Chassis Stats

[Brent McIntosh]

Has anyone had the issues of the "completely duplicate packets" in the Show system statistics TCP command as was able to solve it?


See output below.  I have 4 EXs in mix-mode VC.  2 EX4500s and 2 EC4200s


fpc0:

--------------------------------------------------------------------------

Tcp:

         672121629 packets sent

                 265607005 data packets (2239499377 bytes)

                 2666 data packets retransmitted (2151754 bytes)

                 0 resends initiated by MTU discovery

                 400657728 ack only packets (127642820 packets delayed)

                 0 URG only packets

                 1 window probe packets

                 216866 window update packets

                 17011888 control packets

         923374362 packets received

                 214185759 acks(for 2239377454 bytes)

                 461874247 duplicate acks

                 0 acks for unsent data

                 314275520  packets received in-sequence(1796065222 bytes)

                 223286852 completely duplicate packets(23141 bytes)

                 42 old duplicate packets

                 16 packets with some duplicate data(3143 bytes duped)

                 626 out-of-order packets(492237 bytes)

                 0 packets of data after window(0 bytes)

                 0 window probes

                 946147 window update packets

                 2833 packets received after close

                 683 discarded for bad checksums

                 7 discarded for bad header offset fields

                 0 discarded because packet too short

         5632149 connection requests

         6002 connection accepts

         6341 bad connection attempts

         0 listen queue overflows

         6590 connections established (including accepts)

         5638550 connections closed (including 148 drops)

                 496 connections updated cached RTT on close

                 496 connections updated cached RTT variance on close

                 176 connections updated cached ssthresh on close

         5630711 embryonic connections dropped

         214179917 segments updated rtt(of 215588416 attempts)

         7900 retransmit timeouts

                 46 connections dropped by retransmit timeout

         0 persist timeouts

                 0 connections dropped by persist timeout

         241282656 keepalive timeouts

                 241281935 keepalive probes sent

                 721 connections dropped by keepalive

         83567207 correct ACK header predictions

         188875287 correct data packet header predictions

         6050 syncache entries added

                 42 retransmitted

                 56 dupsyn

                 9484 dropped

                 6002 completed

                 0 bucket overflow

                 0 cache overflow

                 34 reset

                 14 stale

                 0 aborted

                 0 badack

                 0 unreach

                 0 zone failures

         0 cookies sent

         0 cookies received

         439 SACK recovery episodes

         616 segment retransmits in SACK recovery episodes

         143864 byte retransmits in SACK recovery episodes

         7338 SACK options (SACK blocks) received

         499 SACK options (SACK blocks) sent

         0 SACK scoreboard overflow

         0 ACKs sent in response to in-window but not exact RSTs

         0 ACKs sent in response to in-window SYNs on established connections

         0 rcv packets dropped by TCP due to bad address

         0 out-of-sequence segment drops due to insufficient memory

         11373420 RST packets

         166 ICMP packets ignored by TCP

         0 send packets dropped by TCP due to auth errors

         0 rcv packets dropped by TCP due to auth errors

         0 outgoing segments dropped due to policing

udp:

         40410578 datagrams received

         0 with incomplete header

         0 with bad data length field

         20 with bad checksum

         8358572 dropped due to no socket

         7959293 broadcast/multicast datagrams dropped due to no socket

         0 dropped due to full socket buffers

         0 not for hashed pcb

         24092693 delivered

         31930730 datagrams output