HP (Hewlett-Packard) LCS60 Benutzerhandbuch
NETSTAT ( 1 )
NETSTAT
NAME
netstat – show network status
SYNOPSIS
netstat
[-AainrsSv] [-p protocol] [interval]
DESCRIPTION
The netstat command symbolically displays the contents of network-related data
structures to show the status of active connections (default), configured interfaces,
routing tables, network statistics, STREAMS buffer allocation failures, and packet
traffic. The effect of pertinent options will be described in the discussion of each
type of status display.
structures to show the status of active connections (default), configured interfaces,
routing tables, network statistics, STREAMS buffer allocation failures, and packet
traffic. The effect of pertinent options will be described in the discussion of each
type of status display.
Wherever they are included in a status display, local and remote address formats
are of the form host.port. or network.port. The latter format is used if a transport
endpoint’s address specifies a network but no specific host address. The symbolic
names of host, network, and port will be displayed wherever available from the
name server (named(1M)) and the network databases (hosts(4), networks(4), and ser-
vices(4)). The domain names will be stripped from the host and network names. If
the symbolic name for an address cannot be determined, the address will be
displayed in the Internet dot notation (see inet(3)). Where applicable, the -n
option to netstat will disable the symbolic translation of the address fields.
Unspecified or wildcard addresses and ports are identified by an asterisk (*).
are of the form host.port. or network.port. The latter format is used if a transport
endpoint’s address specifies a network but no specific host address. The symbolic
names of host, network, and port will be displayed wherever available from the
name server (named(1M)) and the network databases (hosts(4), networks(4), and ser-
vices(4)). The domain names will be stripped from the host and network names. If
the symbolic name for an address cannot be determined, the address will be
displayed in the Internet dot notation (see inet(3)). Where applicable, the -n
option to netstat will disable the symbolic translation of the address fields.
Unspecified or wildcard addresses and ports are identified by an asterisk (*).
The connection display (default) shows the status of active Internet connections.
This display includes the protocol, the size in bytes of the send and receive
queues, the local and remote addresses of the transport endpoints, and the inter-
nal state of the connection. The -A option adds the associated protocol control
block (PCB) to the display. The -a option includes the inactive connections (listen-
ing servers). The -n option disables the symbolic translation of the local and
remote addresses, causing both to be displayed in their Internet dot notation. The
-p
This display includes the protocol, the size in bytes of the send and receive
queues, the local and remote addresses of the transport endpoints, and the inter-
nal state of the connection. The -A option adds the associated protocol control
block (PCB) to the display. The -a option includes the inactive connections (listen-
ing servers). The -n option disables the symbolic translation of the local and
remote addresses, causing both to be displayed in their Internet dot notation. The
-p
protocol option limits the display to the specified protocol.
The interface display (-i) shows the status of the configured network interfaces.
This display includes the interface name, the maximum transmission unit (Mtu) in
bytes, the network and interface addresses, the number of packets received and
sent, and the number of send and receive errors. The -n option disables the sym-
bolic translation of the network and interface addresses, causing both to be
displayed in their Internet dot notation. An asterisk (*) after the interface name
means the interface is down.
This display includes the interface name, the maximum transmission unit (Mtu) in
bytes, the network and interface addresses, the number of packets received and
sent, and the number of send and receive errors. The -n option disables the sym-
bolic translation of the network and interface addresses, causing both to be
displayed in their Internet dot notation. An asterisk (*) after the interface name
means the interface is down.
The routing table display (-r) shows the status of the configured routes. This
display includes the address of the destination host or network, the address of the
gateway host, the status and type of the route (flags), the current number of active
uses of the route (refcnt), the number of packets sent using that route (use), the
maximum transmission unit (MTU) in bytes, and the interface name of the gate-
way. A direct route is automatically added to the table for each configured inter-
face when the network is brought up. Routes can also be added manually by the
system administrator (route(1M)) or dynamically by the routing daemon
(routed(1M)) or by IP itself if MTU discovery (RFC1191) is being used. The G flag
indicates that the route is a gateway to another network. The H flag indicates that
display includes the address of the destination host or network, the address of the
gateway host, the status and type of the route (flags), the current number of active
uses of the route (refcnt), the number of packets sent using that route (use), the
maximum transmission unit (MTU) in bytes, and the interface name of the gate-
way. A direct route is automatically added to the table for each configured inter-
face when the network is brought up. Routes can also be added manually by the
system administrator (route(1M)) or dynamically by the routing daemon
(routed(1M)) or by IP itself if MTU discovery (RFC1191) is being used. The G flag
indicates that the route is a gateway to another network. The H flag indicates that
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