Additional nameservers

Hi, I would like to add another pair of nameservers to a domain. The scenerio is this: i.e.

Main domain: DOMAIN.COM
Current nameservers:
NS1.DOMAIN.COM 123.123.123.123
NS2.DOMAIN.COM 123.123.123.124

I would like to add a second pair of nameservers using a different ip group from another provider:
DNS3.OTHERDOMAIN.COM 321.321.321.321
DNS4.OTHERDOMAIN.COM 321.321.321.322

What is necessary to set this up so that if there is a problem with the domain and the first set of nameservers that the domain is then available using the second set of nameservers? Is this scenerio possible and how do I set it up?

Any help from DNS gurus gladly accepted. Additional nameservers

Thanks Additional nameservers

 

 

 

 

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