TCP Commands

service tcp-keepalives-in

To generate keepalive packets on idle incoming network connections (initiated by the remote host), use the service tcp-keepalives-in command in global configuration mode . To disable the keepalives, use the no form of this command.

service tcp-keepalives-in

no service tcp-keepalives-in

Syntax Description

This command has no arguments or keywords.

Command Default

Disabled

Command Modes

Global configuration

Command History

Release

Modification

Cisco IOS XE Catalyst SD-WAN Release 17.3.1a

Command qualified for use in Cisco vManage CLI templates.

In the following example, keepalives on incoming TCP connections are generated: 


Device(config)# service tcp-keepalives-in

service tcp-keepalives-out

To generate keepalive packets on idle outgoing network connections (initiated by a user), use the service tcp-keepalives-out command in global configuration mode . To disable the keepalives, use the no form of this command.

service tcp-keepalives-out

no service tcp-keepalives-out

Syntax Description

This command has no arguments or keywords.

Command Default

Disabled

Command Modes

Global configuration

Command History

Release

Modification

Cisco IOS XE Catalyst SD-WAN Release 17.3.1a

Command qualified for use in Cisco vManage CLI templates.

In the following example, keepalives on outgoing TCP connections are generated: 


Device(config)# service tcp-keepalives-out

service tcp-small-servers

To enable small TCP servers such as the Echo, use the service tcp-small-servers command in global configuration mode. To disable the TCP server, use the no form of this command.

service tcp-small-servers

no service tcp-small-servers

Command Default

TCP small servers are disabled.

Command Modes

Global configuration (config)

Command History

Release

Modification

Cisco IOS XE Catalyst SD-WAN Release 17.3.1a

Command qualified for use in Cisco vManage CLI templates.

Usage Guidelines

For usage guidelines, see the Cisco IOS XE service tcp small servers command.

The following example shows how to enable small TCP servers:


Device(config)# service tcp-small-servers

service udp-small-servers

To enable small User Datagram Protocol (UDP) servers such as the Echo, use the service udp-small-servers command in global configuration mode. To disable the UDP server, use the no form of this command.

service udp-small-servers

no service udp-small-servers

Command Default

UDP small servers are disabled.

Command Modes

Global configuration (config)

Command History

Release

Modification

Cisco IOS XE Catalyst SD-WAN Release 17.3.1a

Command qualified for use in Cisco vManage CLI templates.

Usage Guidelines

For usage guidelines, see the Cisco IOS XE service udp small servers command.

The following example shows how to enable small UDP:


Router(config)# service udp-small-servers