Network best practices.

I would like to know if there is a industry standard for hiring  2 network connections for subsidiaries connected to HQ. One must be MPLS, and the backup link could be Internet/VPN circuit. So is there a Industry reference? or maybe a CISCO best practice?  I would like to know if  both link should be in the same bandwidth as well?

Thanks!
Apolo VictoresIT Infrastructure Supervisor and Networking Sp.3MAsked:
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Aaron TomoskyDirector of Solutions ConsultingCommented:
Disclaimer: my day job is at a leading sdwan implementation company and this question comes up frequently.

What you are looking for is circuit diversity so that an outage doesn’t take out both. If the primary is fiber, usually the secondary is coax or fixed wireless with a different carrier. Also make sure the second carrier is actually different, not just someone else reselling the primary carrier.

As to mpls, mpls is usually unessarry as people adopt sd-wan

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Apolo VictoresIT Infrastructure Supervisor and Networking Sp.3MAuthor Commented:
Yes. for sure, I know we must diversificate the vendor carriers. But for now we are having  for private network, MPLS as a standard and for backup the internet carrier, so in order to have an IPSN architecture I would ask, How can I be sure of having a MPLS network of X Mbps  and the Internet network of Y Mbps?  I would say it also depends of the number of users and applications  running on the network. So bottom line How can I define a Networkcapacity to my  Company?

I hope I have ecplained myself better.
Aaron TomoskyDirector of Solutions ConsultingCommented:
What we do with our gear (velocloud) is define the business applications into tiers and actually provide that level of visibility into usage. Without the proper gear it's guessing. 1mb/user? Even with more than enough bandwidth, "bad" users can hog the pipe and make the user experience fail.
Apolo VictoresIT Infrastructure Supervisor and Networking Sp.3MAuthor Commented:
Thank you!
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