TMS zl Management and Configuration Guide ST.1.1.100430

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Virtual Private Networks
Configure a GRE Tunnel
When you have a redundant GRE tunnel, you must create one route over the
primary tunnel and a floating static route over the secondary tunnel. The
floating static route has a higher metric than a primary static route or a primary
default route. A floating static route has a higher administrative distance than
a primary dynamic route.
Configure Static Routes
To configure static routes for the GRE tunnel, follow these steps:
1. Access the Network > Routing > Static Routes window.
2. Click Add static route. The Add static route window is displayed.
Figure 7-161. Add static route Window
3. For Destination Type, select the destination type.
You can select any type, including Default Gateway. The TMS zl Module
supports multiple default routes, so this is a valid option even when you
are configuring a floating static route for a redundant tunnel.
Refer to Figure 7-162 for help configuring the next settings.