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Oracle Solaris Tunable Parameters Reference Manual Oracle Solaris 11 Express 11/10 |
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Oracle Solaris Tunable Parameters Reference Manual Oracle Solaris 11 Express 11/10 |
1. Overview of Oracle Solaris System Tuning
2. Oracle Solaris Kernel Tunable Parameters
4. Internet Protocol Suite Tunable Parameters
Where to Find Tunable Parameter Information
Overview of Tuning IP Suite Parameters
Internet Request for Comments (RFCs)
TCP/IP Parameters Set in the /etc/system File
TCP Parameters With Additional Cautions
5. Network Cache and Accelerator Tunable Parameters
A. Tunable Parameters Change History
Controls the rate of IP in generating IPv4 ICMP error messages. IP generates only up to _icmp_err_burst IPv4 error messages in any _icmp_err_interval.
The _icmp_err_interval parameter protects IP from denial of service attacks. Setting this parameter to 0 disables rate limiting. It does not disable the generation of error messages.
100 milliseconds for _icmp_err_interval
10 error messages for ip_icmp_err_burst
0 – 99,999 milliseconds for _icmp_err_interval
1 – 99,999 error messages for _icmp_err_burst
Yes
If you need a higher error message generation rate for diagnostic purposes.
Unstable
Controls whether IPv4 responds to a broadcast ICMPv4 echo request.
1 (enabled)
0 (disabled) or 1 (enabled)
Yes
If you do not want this behavior for security reasons, disable it.
Unstable
Defines the maximum number of logical interfaces associated with a real interface.
256
1 to 8192
Yes
Do not change the value. If more logical interfaces are required, you might consider increasing the value. However, recognize that this change might have a negative impact on IP's performance.
Unstable
Determines the mode of associating TCP/IP connections with squeues
A value of 0 associates a new TCP/IP connection with the CPU that creates the connection. A value of 1 associates the connection with multiple squeues that belong to different CPUs.
0
0 or 1
Yes
Consider setting this parameter to 1 to spread the load across all CPUs in certain situations. For example, when the number of CPUs exceed the number of NICs, and one CPU is not capable of handling the network load of a single NIC, change this parameter to 1.
This property can only be set in the /etc/system file.
This parameter can only be set in the global zone.
Unstable
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