EnableDeadGWDetect

HKLM\SYSTEM\CurrentControlSet\Services\Tcpip\Parameters

Data type	Range	Default value
REG_DWORD	0 \| 1	1

Description

Determines whether TCP performs dead gateway detection. Dead gateway detection is a TCP feature that identifies gateways that are not operating properly and switches the computer to a new default gateway.

When enabled, any given connections defines a gateway as non-operational ("dead") when a packet sent to the gateway must be retransmitted more than half of the number of times specified in the value of TcpMaxDataRetransmissions. The connection switches to the next gateway in the list in DefaultGateway or DhcpDefaultGateway. The system defines a gateway as dead when more than 25% of its connections have switched to the next default gateway in the list.

Value	Meaning
0	Disables dead gateway detection.
1	Enables dead gateway detection.

Change method

To define backup gateways, use Network and Dial-up Connections. Right-click Local Area Connection, click Properties, click Internet Protocol (TCP/IP), and then click the Properties button. In the bottom, right corner of the General tab, click the Advanced button, click the IP Settings tab, and then, in the Default gateways, in order of use section, click Add.

Note Image Note

Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.