- Thread Starter
- #26
Compare the total packets vs the ones that are bad.netstat -i
provides also good summary, compare all vs bad ones. Bad cabling would definitely yield errors.
Not seeing anything unusual so far (I guess):
Code:
# netstat -ss
tcp:
4224773 packets sent
2687768 data packets (2886450952 bytes)
1043 data packets (1079989 bytes) retransmitted
95 data packets unnecessarily retransmitted
1532746 ack-only packets (275516 delayed)
14 window probe packets
438 window update packets
3179 control packets
3983760 packets received
1150531 acks (for 2886417599 bytes)
2802 duplicate acks
2886221 packets (3452783958 bytes) received in-sequence
233 completely duplicate packets (181928 bytes)
17 old duplicate packets
12278 out-of-order packets (14748023 bytes)
94 window update packets
73 packets received after close
1978 connection requests
39 connection accepts
15 bad connection attempts
1 ignored RSTs in the window
1240 connections established (including accepts)
469 times used RTT from hostcache
469 times used RTT variance from hostcache
366 times used slow-start threshold from hostcache
2177 connections closed (including 21 drops)
497 connections updated cached RTT on close
497 connections updated cached RTT variance on close
372 connections updated cached ssthresh on close
253 embryonic connections dropped
1150531 segments updated rtt (of 638001 attempts)
502 retransmit timeouts
15 persist timeouts
4323 keepalive timeouts
11 keepalive probes sent
322898 correct ACK header predictions
2625179 correct data packet header predictions
44 syncache entries added
6 retransmitted
39 completed
3 reset
2 stale
44 cookies sent
49 hostcache entries added
336 SACK recovery episodes
705 segment rexmits in SACK recovery episodes
686944 byte rexmits in SACK recovery episodes
4676 SACK options (SACK blocks) received
19205 SACK options (SACK blocks) sent
TCP connection count by state:
16 connections in LISTEN state
29 connections in ESTABLISHED state
3 connections in FIN_WAIT_2 state
1 connection in TIME_WAIT state
udp:
564 datagrams received
12 with no checksum
27 dropped due to no socket
537 delivered
535 datagrams output
ip:
3985190 total packets received
3984347 packets for this host
843 packets not forwardable
4227567 packets sent from this host
icmp:
27 calls to icmp_error
Output histogram:
echo reply: 5
destination unreachable: 27
Input histogram:
destination unreachable: 20
echo: 5
time exceeded: 6
5 message responses generated
ICMP address mask responses are disabled
igmp:
arp:
8 ARP requests sent
595 ARP requests received
7 ARP replies received
602 ARP packets received
ip6:
13 total packets received
13 packets for this host
18 packets sent from this host
14 output packets discarded due to no route
3 multicast packets which we don't join
Input histogram:
TCP: 10
ICMP6: 3
Mbuf statistics:
13 one mbuf
0 one ext mbuf
0 two or more ext mbuf
13 failures of source address selection
source addresses on an outgoing I/F
3 link-locals
source addresses on a non-outgoing I/F
13 addresses scope=0xf
source addresses of a different scope
3 link-locals
Source addresses selection rule applied:
3 first candidate
13 same address
icmp6:
Output histogram:
router solicitation: 3
neighbor solicitation: 1
MLDv2 listener report: 4
Histogram of error messages to be generated:
rip6:
# netstat -i
Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll
re0 1500 <Link#1> xx:xx:xx:xx:xx:x 4002488 0 0 7269742 0 0
re0 - xxxx::%re0/64 xxxx::xxxx:xxxx:x 0 - - 5 - -
re0 - xx.xxx.xx.x/2 server 4001034 - - 4244571 - -
lo0 16384 <Link#2> lo0 55 0 0 55 0 0
lo0 - localhost localhost 10 - - 10 - -
lo0 - xxxx::%lo0/64 xxxx::x%lo0 0 - - 0 - -
lo0 - your-net localhost 45 - - 45 - -