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Configuration Guide - IP Service

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configurations of IP Service, including IP address, ARP, DHCP, DNS, IP performance optimization, IPv6, DHCPv6, and IPv6 DNS.
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Configuring TCP Properties

Configuring TCP Properties

Context

When a TCP connection is set up between switch and other devices, TCP properties such as TCP connection for BGP need to be configured.

The following TCP properties can be configured on switch:

  • SYN-Wait timer: When SYN packets are sent, the SYN-Wait timer is started. If no response packet is received after the SYN-Wait timer expires, the TCP connection is closed.

  • FIN-Wait timer: When the TCP connection status changes from FIN_WAIT_1 to FIN_WAIT_2, the FIN-Wait timer is started. If no response packet is received after the FIN-Wait timer expires, the TCP connection is closed.

  • Receive/send buffer size of connection-oriented socket.

  • Maximum Maximum Segment Size (MSS) value: Setting a maximum MSS value for a TCP connection defines the largest TCP packet size, allowing TCP packets to be successfully forwarded by intermediate devices when no MTU is available.

Procedure

  1. Run system-view

    The system view is displayed.

  2. Run tcp timer syn-timeout interval

    The SYN-Wait timer of TCP connections is configured.

    By default, the value of the TCP SYN-Wait timer is 75s.

  3. Run tcp timer fin-timeout interval

    The FIN-WAIT timer of TCP connections is configured.

    By default, the value of the TCP FIN-Wait timer is 675s.

  4. Run tcp window window-size

    The size of the receive or send buffer of a connection-oriented socket is configured.

    By default, the size of the receive or send buffer of a connection-oriented socket is 8k bytes.

  5. Run tcp max-mss mss-value

    The maximum MSS value is configured for a TCP connection.

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

  6. Run commit

    The configuration is committed.

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Updated: 2019-05-08

Document ID: EDOC1100004354

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