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Fit AP V200R010C00 Command Reference

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
tcp ipv6 max-mss

tcp ipv6 max-mss

Function

The tcp ipv6 max-mss command sets the maximum MSS value for a TCP6 connection.

The undo ipv6 tcp ipv6 max-mss command deletes the maximum MSS value of a TCP6 connection.

By default, the maximum MSS value is not configured for TCP6 connections.

Format

tcp ipv6 max-mss mss-value

undo tcp ipv6 max-mss

Parameters

Parameter Description Value
mss-value Specifies the maximum MSS value for a TCP6 connection. The value is an integer ranging from 32 to 9600, in bytes.

Views

System view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

To establish a TCP6 connection, the MSS value is negotiated, which indicates the maximum length of packets that the local device can receive. If the path MTU is unavailable on one end of a TCP6 connection, this end cannot adjust the TCP6 packet size based on the MTU. As a result, this end may send TCP6 packets that are longer than the MTUs on intermediate devices, which will discard these packets. To prevent this problem, run the tcp ipv6 max-mss command on either end of a TCP6 connection to set the maximum MSS value of TCP6 packets. Then the MSS value negotiated by both ends will not exceed this maximum MSS value, and accordingly TCP6 packets sent from both ends will not be longer than this maximum MSS value and can travel through the intermediate network.

Precautions

The maximum MSS value configured using the tcp ipv6 max-mss command must be greater than the minimum MSS value configured using the tcp ipv6 min-mss command.

Example

# Set the maximum MSS value for a TCP6 connection to 1024 bytes.

<Huawei> system-view
[Huawei] tcp ipv6 max-mss 1024
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Updated: 2019-07-18

Document ID: EDOC1100064353

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