Modified: for 8.2.4

Use this object to modify Kernel parameters for the SBC.

Command Syntax

% set system admin <SYSTEM NAME> kernelParams
	tcpWindowScaling <disabled | enabled>
	ipNoPmtuDisc <0-3>

Kernel Parameters

Parameter

Length / Range

Description

 tcpWindowScalingN/A

Configure /proc/sys/net/ipv4/tcp_windows_scaling.

  • disabled
  • enabled (default)
ipNoPmtuDisc0-3

Configure /proc/sys/net/ipv4/ip_no_pmtu_disc.

  • 0 (default): Disabled
  • 1-3: Enabled
    • 1 - When frag-required ICMP is received, PMTU to this destination is set to min_pmut 552.
    • 2 - Implicitly sets IP_PMTUDISC_DONT on every created socket - outgoing IP packet DF is set to 0.
    • 3 - Hardened PMTU discover mode. Refer to Linux kernel document for more information.