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5-24 C
HAPTER
5: F
URTHER
C
ONFIGURATION
A
ND
M
ONITORING
DUA1860-0AAA01
Proto:
Display Field. The type of protocol in use at the local
address displayed in the local address column.
Recv-Q:
Display Field. The number of bytes of data that have
been received and are in the socket buffer waiting to be
delivered.
Send-Q:
Display Field. The number of bytes of data that are in
the socket buffer ready to be sent.
Local Address:
Display Field. The IP address and socket number
of the local interface (separated by a period). Asterisks represent
addresses that are not yet determined. For example, the TCP
address
*.23
represents the Telnet socket for any local IP address.
The UDP address
*.161
represents the SNMP socket for any local
IP address.
Foreign Address:
Display Field. The IP address and socket
number of the remote entity (separated by a period). Asterisks
represent addresses and socket numbers that are not yet
determined.
State:
Display Field. The current state of TCP sockets. The states
are:
CLOSED
which means that the socket is not being used.
LISTEN
which means that the socket is listening for incoming
connections.
SYN_SENT
which means that the socket is trying to establish a
connection.
SYN_RECEIVED
which means that the synchronization of the
connection is in progress.
ESTABLISHED
which means that the connection is established.
CLOSE_WAIT
which means that the remote connection has shut
down and the socket is waiting to close.