Description

Configuring NSM for Failover Between Two ISP Connections on the Same Device

Symptoms


Solution

note Each interface has Track IP configured and two default routes configured with different IP addresses. Because the first route has a metric of 1 and the second route has a metric of 2, if one of the interfaces goes down, all routes associated with that interface will go down, and the second route will take precedence.

To configure NSM using failover between two ISP connections on the same device, perform the following steps:

alt Connect to the NetScreen-Security Manager. For more information on this, go to Connecting to the NetScreen-Security Manager [juniper.net] .

alt Expand Device Manager , and then click to select FW/VPN Devices .

Image of step two


alt From the FW/VPN Device Tree tab, right-click the device you want to configure, and then click Edit .

Image of step three


alt Expand Network , and then click to select Interface .

Image of step four


alt Right-click ethernet3/1 , and then click Edit .

Image of step five


alt From General Properties , in the IP Address and Netmask text boxes, enter an IP address and netmask.

Image of step six


alt Click OK .

Image of step seven


alt Repeat Step 5 through Step 7 for ethernet3/2 using a new IP address and netmask.

alt Right-click ethernet3/1 , and then click Edit .

Image of step nine


alt Click to select Track IP .

Image of step ten


alt From the Track IP pane, click to select Enable . Click the New button.

Image of step eleven

note If you do not want to track any other IP, use the gateway, do not define the IP, and click to select Dynamic (track the default gateway IP) .

Image of note


alt Click OK .

Image of step twelve


alt Repeat Step 9 though Step 12 for interface ethernet3/2.

alt Expand Network , and then click to select Virtual Router .

Image of step fourteen


alt Expand Network , and then click to select Virtual Router .

Image of step fifteen and sixteen


alt Click to select ethernet3/1 , and then click the Edit button.


alt Click to select Routing Table .

Image of step seventeen and eighteen


alt Click the New button.

alt From the Routing Table dialog box, enter the routing information.

Image of step nineteen and twenty


alt Click OK .

alt Repeat Step 16 through Step 20 for ethernet3/2.

alt The Routing Table will display the configured table. Click OK .

Image of step twenty-two


alt Click OK .

Image of step twenty-three


alt Right-click the device, and then click Update Device .

Image of step twenty-four



Former Article Id

ns10709