tcp adjust-mss(CUSP-forwarder view)

Function

The tcp adjust-mss command sets the maximum segment size (MSS) that can be sent to the peer in a TCP session.

The undo tcp adjust-mss command restores the default MSS value.

By default, the MSS value is 1400 bytes.

This command is supported only on the NetEngine 8000 F1A.

Format

tcp adjust-mss value

undo tcp adjust-mss [ value ]

Parameters

Parameter	Description	Value
value	Mss value.	The value is an integer that ranges from 1 to 8192. The default value is 1400.

Parameter

Description

Value

value

Mss value.

The value is an integer that ranges from 1 to 8192. The default value is 1400.

Views

CUSP-forwarder view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
cusp-agent	write

Usage Guidelines

Usage Scenario

In CU separation scenarios, CUSP packets are transmitted over TCP. You can run the tcp adjust-mss command to adjust the MSS value of CUSP packets to prevent TCP packets from being fragmented on intermediate links and improve transmission performance.

Precautions

The tcp adjust-mss command is delivered to the UP from CP, so it can not be configured, modified or deleted on the UP side.

Example

# Set the MSS value of CUSP packets to 1300.

<HUAWEI> system-view
[~HUAWEI] cu-controller
[~HUAWEI-cu-controller] up 1025
[~HUAWEI-cu-controller-up1025] config
[~HUAWEI-cu-controller-up1025-config] cusp agent up2
[~HUAWEI-cu-controller-up1025-config-cusp-agent-up2] tcp adjust-mss 1300