My February IP corner article, Small Site Multihoming, describes how you can reliably connect to two Internet Service Providers without running BGP or owning part of public IP address space. You can also view recording of an online session (registration required) I did explaining the details.
The solution in the article relies on two IOS technologies: multiple Network Address Translation (NAT) pools and reliable static routes (static routes tied to SLA measurements).
Ivan Pepelnjak, CCIE#1354, is the chief technology advisor for NIL Data Communications. He has been designing and implementing large-scale data communications networks as well as teaching and writing books about advanced technologies since 1990. See his full profile, contact him or follow @ioshints on Twitter.
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