Frame Relay is still one of the most popular WAN services deployed over the past decade, and there’s a good reason for this cost. And it’s a rare network design or designer that has the privilege to ignore that all-important cost factor!
By default, Frame Relay is classified as a non-broadcast multi-access (NBMA) network, meaning it doesn’t send any broadcasts like RIP updates across the network. No worries I’m not going leave you hanging. We’ll get into this more soon.
Frame Relay has at its roots a technology called X.25, and it essentially incorporates the components of X.25 that are still relevant to today’s reliable and relatively “clean” telecommunications networks while leaving out the no-longer-needed error-correction components.
It’s substantially more complex than the simple leased-line networks you learned about when I discussed the HDLC and PPP protocols. The leased-line networks are easy to conceptualize but not so much when it comes to Frame Relay. It can be significantly more complex and versatile, which is why it’s often represented as a “cloud” in networking graphics. I’ll get to that in a minute—for right now, I’m going to introduce Frame Relay in concept and show you how it differs from simpler leased-line technologies.
Along with your introduction to this technology, you’ll get a virtual dictionary of all the new terminology you’ll need to solidly grasp the basics of Frame Relay. After that, I’ll guide you through some simple Frame Relay implementations.
By default, Frame Relay is classified as a non-broadcast multi-access (NBMA) network, meaning it doesn’t send any broadcasts like RIP updates across the network. No worries I’m not going leave you hanging. We’ll get into this more soon.
Frame Relay has at its roots a technology called X.25, and it essentially incorporates the components of X.25 that are still relevant to today’s reliable and relatively “clean” telecommunications networks while leaving out the no-longer-needed error-correction components.
It’s substantially more complex than the simple leased-line networks you learned about when I discussed the HDLC and PPP protocols. The leased-line networks are easy to conceptualize but not so much when it comes to Frame Relay. It can be significantly more complex and versatile, which is why it’s often represented as a “cloud” in networking graphics. I’ll get to that in a minute—for right now, I’m going to introduce Frame Relay in concept and show you how it differs from simpler leased-line technologies.
Along with your introduction to this technology, you’ll get a virtual dictionary of all the new terminology you’ll need to solidly grasp the basics of Frame Relay. After that, I’ll guide you through some simple Frame Relay implementations.
No comments:
Post a Comment