Viewing TCP global information

View TCP and UDP information to view the current configuration.

Before you begin

Change the VRF instance as required to view TCP global information on a specific VRF instance. Not all parameters are configurable on non-default VRFs.

About this task

The fields on the TCP global tab provide information about the handshake (SYN) configuration and the maximum number of TCP connections you can create on your system.

When you initiate a TCP connection, both end points send handshake information to create the channel.

The retransmission algorithm and fields display the configured timeout value and minimum and maximum retransmission times that your system uses to terminate a connection attempt that falls outside your specified parameters.

Procedure

  1. In the navigation pane, expand the Configuration > IPv6 folders
  2. Click TCP/UDP.
  3. Click the TCP Globals tab.

TCP Global field descriptions

Use the data in the following table to use the TCP Globals tab.

Name

Description

RtoAlgorithm

Determines the timeout value used for retransmitting unacknowledged octets.

RtoMin

Displays the minimum time (in milliseconds) permitted by a TCP implementation for the retransmission timeout.

RtoMax

Displays the maximum time (in milliseconds) permitted by a TCP implementation for the retransmission timeout.

MaxConn

Displays the maximum connections for the device.