tcp_local_dack_interval

Description

Specifies the time-out value for TCP-delayed acknowledgment (ACK) timer for hosts that are directly connected.

Refer to RFC 1122, 4.2.3.2.

Default

50 milliseconds

Range

10 milliseconds to 500 milliseconds

Dynamic?

Yes

When to Change

Do not increase this value to more than 500 milliseconds.

Increase the value under the following circumstances:

• Slow network links (less than 57.6 Kbps) with greater than 512 bytes maximum segment size (MSS)

• The interval for receiving more than one TCP segment is short

Commitment Level

Unstable

Change History

For information, see tcp_local_dack_interval (Solaris 10 Releases).