A mobile router is the all-important “outdoor” link to the Internet for the nodes on its mobile
networks. If the mobile router fails, the mobile networks are left in a precarious situation—
without Internet connection and without another first-hop router with which to connect. Thus,
it seems prudent that the mobile router should have the capability to be “backed up” in some
way. Mind you, it is highly unlikely that a Cisco mobile router will fail, but it’s better to be safe
than sorry!
The Cisco Mobile Networks feature provides full redundancy capability for its mobile routers,
as shown in Figure ...
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