 How to Display Network Status
These procedures enable you to
display the following structure formats for network data by using the netstat command:
All sockets and routing table entries
Inet address family for IPv4
Inet6 address family for IPv6
Statistics per interface--IPv6/ICMPv6 counters
For more information on the netstat command, see
the netstat(1M)
man page.
Example--Displaying All Sockets and Routing Table Entries
% netstat -a
UDP: IPv4
Local Address Remote Address State
-------------------- -------------------- -------
*.* Unbound
*.apexrpc Idle
*.* Unbound
.
.
UDP: IPv6
Local Address Remote Address State
If
--------------------------------- --------------------------------- -------
*.* Unbound
*.time Idle
*.echo Idle
*.discard Idle
*.daytime Idle
*.chargen Idle
TCP: IPv4
Local Address Remote Address Swind Send-Q Rwind Recv-Q State
-------------------- -------------------- ----- ------ ----- ------ -------
*.* *.* 0 0 0 0 IDLE
*.apexrpc *.* 0 0 0 0 LISTEN
*.* *.* 0 0 0 0 IDLE
*.ftp *.* 0 0 0 0 LISTEN
localhost.427 *.* 0 0 0 0 LISTEN
*.telnet *.* 0 0 0 0 LISTEN
tn.apex.COM.telnet is.Eng.apex.COM 8760 0 8760 0 ESTABLISHED
tn.apex.COM.33528 np.apex.COM.46637 8760 0 8760 0 TIME_WAIT
tn.apex.COM.33529 np.apex.COM.apexrpc 8760 0 8760 0 TIME_WAIT
TCP: IPv6
Local Address Remote Address Swind Send-Q Rwind Recv-Q State If
----------------- ----------------- ----- ------ ----- ------ -----
*.* *.* 0 0 0 0 IDLE
*.ftp *.* 0 0 0 0 LISTEN
*.telnet *.* 0 0 0 0 LISTEN
*.shell *.* 0 0 0 0 LISTEN
*.smtp *.* 0 0 0 0 LISTEN
.
.
2::56:8.login something.1023 8640 0 8640 0 ESTABLISHED
fe80::a:a8.echo fe80::a:89 8640 0 8640 0 ESTABLISHED
fe80::a:a8.ftp fe80::a:90 8640 0 8640 0 ESTABLISHED
|
Example--Displaying Inet Address Family for IPv4
% netstat -f inet
TCP: IPv4
Local Address Remote Address Swind Send-Q Rwind Recv-Q State
-------------------- -------------------- ----- ------ ----- ------ -------
tn.apex.COM.telnet is.apex.COM.35388 8760 0 8760 0 ESTABLISHED
tn.apex.COM.1022 alive-v4.nfsd 8760 0 8760 0 ESTABLISHED
tn.apex.COM.1021 sl.apex.COM.nfsd 8760 0 8760 0 ESTABLISHED
.
.
tn.apex.COM.33539 np.apex.COM.apexrpc 8760 0 8760 0 TIME_WAIT
|
Example--Displaying Inet6 Address Family for IPv4
% netstat -f inet6
TCP: IPv6
Local Address Remote Address Swind Send-Q Rwind Recv-Q State If
-------------------- --------------------- ----- ------ ----- ------ ----------- -----
2::56:a8.login something.1023 8640 0 8640 0 ESTABLISHED
fe80::a0:a8.echo fe80::a0:de.35389 8640 0 8640 0 ESTABLISHED
.
.
fe80::a0:a8.ftp-data fe80::a0:de.35394 25920 0 25920 0 TIME_WAIT
|
Example--Displaying Statistics Per Interface (IPv6/ICMPv6 Counters)
% netstat -sa
RAWIP
rawipInDatagrams = 1407 rawipInErrors = 0
rawipInCksumErrs = 0 rawipOutDatagrams = 5
rawipOutErrors = 0
UDP
udpInDatagrams = 7900 udpInErrors = 0
udpOutDatagrams = 7725 udpOutErrors = 0
TCP tcpRtoAlgorithm = 4 tcpRtoMin = 200
tcpRtoMax = 60000 tcpMaxConn = -1
.
.
IPv4 ipForwarding = 2 ipDefaultTTL = 255
ipInReceives =406345 ipInHdrErrors = 0
ipInAddrErrors = 0 ipInCksumErrs = 0
.
.
IPv6 for lo0
ipv6Forwarding = 2 ipv6DefaultHopLimit = 0
ipv6InReceives = 0 ipv6InHdrErrors = 0
.
.
IPv6 for le0
ipv6Forwarding = 2 ipv6DefaultHopLimit = 255
ipv6InReceives = 885 ipv6InHdrErrors = 0
.
.
IPv6 ipv6Forwarding = 2 ipv6DefaultHopLimit = 255
ipv6InReceives = 885 ipv6InHdrErrors = 0
.
.
ICMPv4 icmpInMsgs = 618 icmpInErrors = 0
icmpInCksumErrs = 0 icmpInUnknowns = 0
icmpInDestUnreachs = 5 icmpInTimeExcds = 0
.
.
ICMPv6 for lo0
icmp6InMsgs = 0 icmp6InErrors = 0
icmp6InDestUnreachs = 0 icmp6InAdminProhibs = 0
.
.
ICMPv6 for le0
icmp6InMsgs = 796 icmp6InErrors = 0
icmp6InDestUnreachs = 0 icmp6InAdminProhibs = 0
icmp6InTimeExcds = 0 icmp6InParmProblems = 0
.
.
ICMPv6 icmp6InMsgs = 796 icmp6InErrors = 0
icmp6InDestUnreachs = 0 icmp6InAdminProhibs = 0
.
.
IGMP:
2542 messages received
0 messages received with too few bytes
0 messages received with bad checksum
2542 membership queries received
.
.
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