I'm a CIS major but they're pretty much the same or at least similar enough. Anyway, MIS is in my opinion a great degree, but how far it gets you kind of depends on what career path you're going for. 81% of the CIS grads at my university in 2009 were employed at graduation and average starting salary was like $53k (Granted though that I go to a pretty small business school).
With most MIS/CIS degrees, you're going to a degree that's pretty technical, but also very business focused which is pretty much the draw of it in my opinion. You'll learn object-oriented programming/application development (Java, etc.), database management (MS Access/SQL), a bit of IT infrastructure, system analysis, project management, etc. But beyond technical skills, you'll also learn your Macro/Micro economics, accounting, marketing, management that you would with another business degree.
Now I think MIS tends to get some flak (mostly from software engineers) because the degree isn't as heavily technical as CS and is much much more business focused. But I think that's the whole point of the degree. If you're trying to get a software engineering job as an MIS major, good luck going against a bunch of other CS grads who definitely know a lot more than you do.
But I think the main spot where MIS grads can succeed is in more business focused positions, such as a Consultant or as a Business/Systems Analyst. Someone who knows enough business knowledge to take a problem and create an economically feasible idea, and also know enough technical knowledge to translate that idea into an actual IT project.
As for going into networking especially with a crazy competitive company like Cisco, ehhh I really don't know about that one. I'm not really sure how good your chances would be in getting a Networking job with an MIS degree. Like I said, it's more so tailored towards Analyst positions. To be honest, Cisco came to a university I transferred out of for a meet and greet presentation and almost every single one of the college students at the presentation were Computer & Electrical Engineering majors (except me haha).