HP-UX Reference (11i v2 03/08) - 1 User Commands N-Z (vol 2)

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netstat(1) netstat(1)

NAME

netstat - show network status

SYNOPSIS

netstat [-an][-f address-family ][system ]

netstat [-an][-f address-family ][system [ core ]]

# PA-RISC only

netstat

[-Mnrsv][-f address-family ][

-p protocol ][system ]

netstat [-Mnrsv][-f address-family ][

-p protocol ][system [ core ]]

# PA-RISC only

netstat [-ginw][-I interface ][interval ][system ]

netstat [-ginw][-I interface ][interval ][system [ core ]]

# PA-RISC only

DESCRIPTION

netstat displays statistics for network interfaces and protocols, as well as the contents of various

network-related data structures. The output format varies according to the options selected. Some

options are ignored or invalid when used in combination with other options.

Generally, the

netstat command takes one of the three forms shown above:

• The ﬁrst form of the command displays a list of active sockets for each protocol.

• The second form displays the contents of one of the other network data structures according to

the option selected.

• The third form displays conﬁguration information for each network interface. It also displays

network trafﬁc data on conﬁgured network interfaces, optionally updated at each interval , meas-

ured in seconds.

Options are interpreted as follows:

-a Show the state of all sockets, including passive sockets used by server processes.

When netstat is used without any options only active sockets are shown.

This option does not show the state of X.25 programmatic access sockets. The

option is ignored if the -g, -i, -I, -M, -p,

-r, -s or interval option is

speciﬁed.

-f address-family

Show statistics or address control block for only the speciﬁed address-family.

The following address families are recognized:

inet for AF_INET, inet6

for AF_INET6, and unix for AF_UNIX. This option with AF_UNIX applies to

the -a and -s options. This option with AF_INET or AF_INET6 applies to the

-a, -i, -n, and -s options.

-g Show multicast information for network interfaces. Only the address family

AF_INET is recognized by this option. This option may be combined with the

-i option to display both kinds of information. The option is ignored if the -p

option is speciﬁed.

-i Show the state of network interfaces. Only the interfaces that have been

conﬁgured with an IP address or the plumb option using the ifconfig com-

mand are shown. The output includes both the primary and logical interfaces.

(See ifconﬁg(1M)). The counts for Ipkts and Opkts ﬁelds are for IP packets only.

This option is ignored if the -p option is speciﬁed. By default, when the -f

option is not speciﬁed, netstat shows the state of interfaces conﬁgured with

either IPv4 or IPv6 addresses. An exception is when the user has not conﬁgured

any IPv6 address on any interface, netstat does not display the state of the

IPv6 loopback interface.

-I interface Show information about the speciﬁed interface only. This option applies to the

-g and -i options.

-M Show the multicast routing tables. When -s is used with the -M option,

netstat displays multicast routing statistics instead. This option is ignored if

the -p option is speciﬁed.

-n Show network addresses as numbers. Normally, netstat interprets addresses

and attempts to display them symbolically. This option applies to the -a, -i,

HP-UX 11i Version 2: August 2003 − 1 − Hewlett-Packard Company Section 1−−573