Книга: Windows Server 2012 R2 Storage, Security, & Networking Pocket Consultant

Configuring multiple gateways

Configuring multiple gateways

To provide fault tolerance in case of a router outage, you can choose to configure Windows Server 2012 R2 computers so that they use multiple default gateways. When you assign multiple gateways, Windows Server 2012 R2 uses the gateway metric to determine which gateway is used and at what time. The gateway metric indicates the routing cost of using a gateway. The gateway with the lowest routing cost, or metric, is used first. If the computer can’t communicate with this gateway, Windows Server 2012 R2 tries to use the gateway with the next lowest metric.

The best way to configure multiple gateways depends on the configuration of your network. If your organization’s computers use DHCP, you probably want to configure the additional gateways through settings on the DHCP server. If computers use static IP addresses or you want to set gateways specifically, assign them by following these steps:

1. In Network And Sharing Center, tap or click Change Adapter Settings. In Network Connections, press and hold or right-click the connection with which you want to work, and then tap or click Properties.

2. Double-tap or double-click Internet Protocol Version 6 (TCP/IPv6) or Internet Protocol Version 4 (TCP/IPv4) as appropriate for the type of IP address you are configuring.

3. Tap or click Advanced to open the Advanced TCP/IP Settings dialog box, shown in Figure 7–4.

FIGURE 7–4 Configure multiple IP addresses and gateways in the Advanced TCP/IP Settings dialog box.

4. The Default Gateways panel shows the current gateways that have been manually configured (if any). You can enter additional default gateways as necessary.

a. Tap or click Add, and then enter the gateway address in the Gateway text box.

b. By default, Windows Server 2012 R2 automatically assigns a metric to the gateway. You can also assign the metric yourself. To do this, clear the Automatic Metric check box, enter a metric in the text box provided, and then tap or click Add.

c. Repeat steps a through b for each gateway you want to add.

5. Tap or click OK, and then tap or click Close.

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