Equipment [rss]

PodSnacks: Network Interface Unit (NIU)

Posted Thursday, May 01, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/niu.mp3
OK, some of you apparently like the basics! So let's go back to them. Our topic today is a much used term, but one with a lot of variation in practice. The term is network interface unit (NIU). This is the place where the carrier's network touches Read More...

PodSnacks: The Chained Layers

Posted Thursday, April 24, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q2/chained_layers.mp3
Back to the OSI Reference Model for a moment. You may sometimes hear reference to the chained_layers . This is a reference to the first three layers of the model, so named because chaining them together creates the fabric of an inter-network. In today's Read More...

PodSnacks: Routers vs. Layer 3 Switches

Posted Monday, March 17, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/layer-3-switch.mp3
The role of a router is relatively simple: it routes packets and operates at Layer 3 of the OSI Reference Model . This industry, however, is never content to leave anything simple. Enter the Layer 3 switch to muddy the waters. In today's PodSnack, Read More...

Battle of the Titans

Posted Friday, February 22, 2008 5:58 AM by mgilbert :: 0 Comments
Filed under , , , , , , ,
Once upon a time there was a major player in routing . They were known as Cisco and all others were but a pale shadow compared to their market position. Where Cisco touted double digit penetration, others could only boast single digit penetration. And Read More...

PodSnacks: Add/Drop Multiplexer (ADM)

Posted Thursday, January 31, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q1/adm.mp3
In other PodSnacks, we've discussed multiplexing , multiplexers , and digital cross-connect systems (DCS). Today we're going to look at a device that brings these concepts together: the add/drop multiplexer (ADM). This device is part of the SONET Read More...

PodSnacks: Digital Cross-Connect System

Posted Tuesday, January 29, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q1/dcs.mp3
We've talked before about multiplexing , and we recently talked about a multiplexer . Now we're going to step it up a notch and talk about digital cross-connect systems (DCS). These are the workhorses of carrier networks. They are capable of interconnecting Read More...

PodSnacks: Multiplexer

Posted Thursday, January 24, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q1/mux.mp3
We've talked before about multiplexing , but we never talked about the device that does the multiplexing: a multiplexer . In today's PodSnacks, I'm going to take a brief look at this piece of equipment, where it might be deployed, and why Read More...

PodSnacks: Repeater

Posted Friday, January 18, 2008 6:00 AM by mgilbert :: 0 Comments
Filed under , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2008q1/repeater.mp3
When I don't have any outstanding topic requests, I tend to be wiki -driven. I look for articles in our wiki that have no audio and record a bit, or I look for articles that are needed (because they are linked to in multiple places) and I write one. Read More...

PodSnacks: Frame Relay Access Device

Posted Wednesday, August 22, 2007 8:57 AM by mgilbert :: 0 Comments
Filed under , , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/frad.mp3
We've spent a couple of PodSnacks on frame relay , but we've never really taken a look at the customer end of the frame relay user-to-network interface (UNI). The device that is placed out there is generically referred to as a frame relay access Read More...

PodSnacks: Layer 3 Switches vs. Routers

Posted Monday, March 12, 2007 6:51 AM by mgilbert :: 0 Comments
Filed under , , , , , , , , ,
Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/layer-3-switch.mp3
The role of a router is relatively simple: it routes packets and operates at Layer 3 of the OSI Reference Model . This industry, however, is never content to leave anything simple. Enter the Layer 3 switch to muddy the waters. In today's PodSnack, Read More...