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Oracle Solaris Tunable Parameters Reference Manual     Oracle Solaris 11 Express 11/10
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Document Information

Preface

1.  Overview of Oracle Solaris System Tuning

2.  Oracle Solaris Kernel Tunable Parameters

3.  NFS Tunable Parameters

4.  Internet Protocol Suite Tunable Parameters

Where to Find Tunable Parameter Information

Overview of Tuning IP Suite Parameters

IP Suite Parameter Validation

Internet Request for Comments (RFCs)

IP Tunable Parameters

_icmp_err_interval and _icmp_err_burst

_respond_to_echo_broadcast

_addrs_per_if

ip_squeue_fanout

TCP Tunable Parameters

_deferred_ack_interval

_local_dack_interval

_deferred_acks_max

_local_dacks_max

_wscale_always

_tstamp_always

send_maxbuf

recv_maxbuf

_max_buf

_cwnd_max

_slow_start_initial

_slow_start_after_idle

sack

_rev_src_routes

_time_wait_interval

ecn

_conn_req_max_q

_conn_req_max_q0

_conn_req_min

_rst_sent_rate_enabled

_rst_sent_rate

TCP/IP Parameters Set in the /etc/system File

ipcl_conn_hash_size

ip_squeue_worker_wait

TCP Parameters With Additional Cautions

_keepalive_interval

_ip_abort_interval

_rexmit_interval_initial

_rexmit_interval_max

_rexmit_interval_min

_rexmit_interval_extra

_tstamp_if_wscale

_recv_hiwat_minmss

UDP Tunable Parameters

send_maxbuf

recv_maxbuf

IPQoS Tunable Parameter

_policy_mask

SCTP Tunable Parameters

_max_init_retr

_pa_max_retr

_pp_max_retr

_cwnd_max

_ipv4_ttl

_heartbeat_interval

_new_secret_interval

_initial_mtu

_deferred_ack_interval

_ignore_path_mtu

_initial_ssthresh

_max_buf

_ipv6_hoplimit

_rto_min

_rto_max

_rto_initial

_cookie_life

_max_in_streams

_initial_out_streams

_shutack_wait_bound

_maxburst

_addip_enabled

_prsctp_enabled

Per-Route Metrics

5.  Network Cache and Accelerator Tunable Parameters

6.  System Facility Parameters

A.  Tunable Parameters Change History

B.  Revision History for This Manual

Index

Overview of Tuning IP Suite Parameters

You can set all of the tuning parameters described in this chapter by using the ipadm command except for the following parameters:

These parameters can only be set in the /etc/system file.

Use the following syntax to set TCP/IP parameters by using the ipadm command:

# ipadm set-prop -p parameter tcp|ip

For example:

# ipadm set-prop -p extra_priv_ports=1047 tcp
# ipadm show-prop -p extra_priv_ports tcp
PROTO PROPERTY              PERM CURRENT      PERSISTENT   DEFAULT      POSSIBLE
tcp   extra_priv_ports      rw   1047         1047         2049,4045    1-65535

For more information, see ipadm(1M).

Use the following syntax to set TCP/IP parameters by using the ndd command:

# ndd -set driver parameter

For more information, see ndd(1M).

Although the SMF framework provides a method for managing system services, ipadm commands are still included in system startup scripts. For more information on creating a startup script, see Using Run Control Scripts in System Administration Guide: Basic Administration.

IP Suite Parameter Validation

All parameters described in this section are checked to verify that they fall in the parameter range. The parameter's range is provided with the description for each parameter.

Internet Request for Comments (RFCs)

Internet protocol and standard specifications are described in RFC documents. You can get copies of RFCs from ftp://ftp.rfc-editor.org/in-notes. Browse RFC topics by viewing the rfc-index.txt file at this site.