Sets parameters for ICMP, IP, TCP, and UDP.
Related commands: SET CONFIGURATION PROTOCOL, SHOW PROTOCOL
Format
SET PROTOCOL ICMP [ /[NO]REDIRECT ]
SET PROTOCOL IP [ /[NO]FORWARD ]
[ /REASSEMBLY_TIMER=seconds ]
SET PROTOCOL TCP [ /[NO]MTU_SEGMENT_SIZE ]
[ /[NO]DELAY_ACK ]
[ /DROP_COUNT=n ]
[ /PROBE_TIMER=seconds ]
[ /QUOTA=[ SEND=bytes,RECEIVE=bytes ]
[ /[NO]WINDOW_SCALE ]
SET PROTOCOL UDP [ /[NO]BROADCAST ]
[ /QUOTA=options ]
1 – Restrictions
Requires OPER privilege.
2 – Parameters
{ICMP | IP | TCP | UDP}
Required.
Specifies the protocol software to configure.
3 – Qualifiers for ICMP
3.1 /REDIRECT
/REDIRECT
/NOREDIRECT
Optional. Default: /NOREDIRECT.
Sends ICMP_REDIRECT messages.
4 – Qualifiers for IP
4.1 /FORWARD
/FORWARD
/NOFORWARD
Optional. Default: /NOFORWARD.
Forwards IP messages to other hosts.
4.2 /REASSEMBLY_TIMER
/REASSEMBLY_TIMER=n
Optional. Default: 7 seconds. Valid range: 1 to 126.
Maximum time for trying to reassemble a received datagram.
5 – Qualifiers for TCP
5.1 /MTU_SEGMENT_SIZE
/MTU_SEGMENT_SIZE
/NOMTU_SEGMENT_SIZE
Optional. Default: /NOMTU_SEGMENT_SIZE.
If a connection is more than one hop away, sets the segment size.
Specify one of the following:
/MTU_SEGMENT_SIZE Sets the segment size as close as possible to
the maximum transmission unit (MTU) size.
/NOMTU_SEGMENT_ Sets the segment size as close as possible to
SIZE the standard 512 bytes.
5.2 /DELAY_ACK
/DELAY_ACK
/NODELAY_ACK
Optional. Default: /DELAY_ACK.
Enables or disables a delay before sending the following
acknowledgments:
/DELAY_ACK ACKs are generated with a delay.
/NODELAY_ACK ACKs are generated without any delay.
5.3 /DROP_COUNT
/DROP_COUNT=n
Optional.
Number of idle probes that can go unsatisfied before the software
declares a TCP connection dead and closes it.
5.4 /PROBE_TIMER
/PROBE_TIMER=n
Optional. Default: 75 seconds.
Number of seconds between probes for idle TCP connections (when
the SO_KEEPALIVE option is set). If the remote system fails to
respond, the connection is removed. Also, when initiating a TCP
connection request, indicates the maximum number of seconds that
the software waits for a response from the remote system before
the request times out.
5.5 /QUOTA
/QUOTA=[SEND=bytes,RECEIVE=bytes]
Optional.
Queue size (in bytes) for messages.
The options for setting TCP message queue size are:
o RECEIVE:n - Receive queue size. Default: 4096 bytes.
o SEND:n - Send queue size. Default: 4096 bytes.
5.6 /WINDOW_SCALE
/WINDOW_SCALE
/NOWINDOW_SCALE
Optional.
Turns TCP window scaling on and off. Default is on.
Scaling allows windows larger than 64 KB to be represented in
the normal 16-bit TCP window field. Large windows allow improved
throughput. Turning this option off may help you to troubleshoot
communication problems with another TCP/IP implementation.
6 – Qualifiers for UDP
6.1 /BROADCAST
/BROADCAST
/[NO]BROADCAST
Optional. Default: /NOBROADCAST.
Enables privilege checking for broadcast messages.
o /BROADCAST - Nonprivileged users can send broadcast messages.
o /NOBROADCAST - To send broadcast messages, users need a
privileged UIC or the SYSPRV, BYPASS, or OPER privilege.
ONC RPC applications use broadcast messages and need privilege
checking disabled.
6.2 /QUOTA
/QUOTA=options
Optional.
Specifies the queue size (in bytes) for messages.
The options for setting UDP message queue size are:
o RECEIVE:n - Receive queue size. Default: 9000 bytes.
o SEND:n - Send queue size. Default: 9000 bytes.
7 – Examples
1.TCPIP> SET PROTOCOL IP /FORWARD
Sets IP to forward messages to other hosts, including other
Internet cluster nodes.
2.TCPIP> SET PROTOCOL TCP /PROBE_TIMER=50
Sets the TCP probe timer parameter to 50 seconds.