This is the default setting for RIP. If a route is unavailable when this
update occurs, that route is deleted from the routing table. Although that sounds ideal, it
doesn??™t work for dial-on-demand connections where one route is not always connected
but rather initiated when needed. The route is still valid for that network segment, but
since it??™s not available all the time, the router will convey this information out to other
routers, which will subsequently delete the entry for that route in their routing tables.
To address this, RIP supports auto-static update mode, in which a router automatically
converts route information it receives into static routes in the routing table. This way, the
route persists forever until the administrator deletes the entry. As an added optimization,
routers do not provide their routing table information until a router requests it.
Hands-On Exercise: Installing Routing and Remote Access
Before you can configure RRAS, you must install it. If you look at the various server roles
and features you can install on Windows Server 2008, you will find that RRAS is missing.
In fact, it isn??™t missing at all: You simply have to select RRAS as part of Network Access
Services to install it. Follow these steps to install RRAS:
1. Open Server Manager.
2. Click the Add Roles link to start the Add Roles Wizard.
3. Click Next on the Before You Begin screen.
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