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tHAWT Episode #110: Mac-in-Mac Rules

Posted Sunday, June 15, 2008 5:35 PM by thindson :: 0 Comments
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Attachment(s): http://hill-vt.com/podcast/tHAWT/tHAWT_061308.mp3
Dave and I kick off the discussion by following up on last week's discussion around provider backbone bridging with traffic engineering as Fujitsu annouced its rollout of products. The Apple's WWDC was this week, so we had to add our piece to Read More...

PodSnacks: Virtual Circuit (VC)

Posted Friday, April 18, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/virtual_circuit.mp3
Packet networks come in two basic flavors: datagram or virtual circuit . Today, Mark is going to walk you through the definition of a virtual circuit, and examples of places where you can find them. You can listen to (or download) the PodSnack by clicking Read More...

PodSnacks: Asynchronous Transfer Mode

Posted Wednesday, April 02, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/atm.mp3
A few weeks ago, we looked at Frame Relay. I suppose it makes sense to take a bit of time and explore asynchronous transfer mode (ATM). In today's PodSnack, Mark walks you through the basics. You can listen to (or download) the PodSnack by clicking Read More...

PodSnack: Frame Relay Addressing

Posted Monday, March 03, 2008 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/frame_relay_addressing.mp3
Since we're talking about Frame Relay , might was well spend a bit of time looking at frame relay addressing . In this PodSnack, Dave takes you through the structure of the address field and then focuses in on the DLCI. You can listen to (or download) Read More...

PodSnack: Frame Relay

Posted Friday, February 29, 2008 1:50 PM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/frame_relay.mp3
We're all running a bit ragged at Hill Associates right now, so I thought I'd stick with something simple: Frame Relay . Although under pressure now from Ethernet and IP-based services, and saddled with the prefix "legacy," Frame Relay Read More...

PodSnacks: X.25

Posted Thursday, November 01, 2007 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q4/x.25.mp3
Time for a golden oldie. Although it has largely been relegated to niche environments, one of the earliest packet services offered by common carriers was something called X.25 . This service was very widely used through the 1980s and early 1990s, and Read More...

PodSnacks: Metro Ethernet Service Types

Posted Friday, October 26, 2007 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q4/mef_service_types.mp3
A few sessions ago, we talked a bit about terms related to Metro Ethernet . We talked about service multiplexing and we defined the term Ethernet virtual connection (EVC). Today we're going to bring those two concepts together and see how it gives Read More...

PodSnacks: Ethernet Virtual Connection

Posted Tuesday, October 16, 2007 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q4/evc.mp3
Today we shift gears a bit. We haven't exhausted all possible queuing systems, but we have covered the major ones. I don't know about you, but I'm ready for a change of subject. Having just come back from teaching a class, I was reminded how Read More...

PodSnacks: PVC vs. SVC

Posted Wednesday, October 03, 2007 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q4/pvc-svc.mp3
We have several packet network technologies that work on the virtual circuit model. These include both frame relay and ATM . In these networks we distinguish between permanent virtual circuits (PVC) and switched virtual circuits (SVC). Today's PodSnack Read More...

PodSnacks: ATM Adaptation Layer

Posted Tuesday, September 25, 2007 7:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/aal.mp3
I was wandering around the wiki trying to decide if I was going to write a new article or just record something for an existing article, and I ran across the article about the ATM Adaptation Layer (AAL). Yes, I know. ATM is on the wane, heading out, riding Read More...

PodSnacks: Excess Information Rate

Posted Thursday, August 23, 2007 9:25 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/eir.mp3
A couple of days ago we talked about the committed information rate (CIR) that is assigned to a frame relay virtual circuit (VC). There is another parameter assigned to the VC: the excess information rate (EIR). This parameter controls the burst tolerance Read More...

PodSnacks: Frame Relay Access Device

Posted Wednesday, August 22, 2007 8:57 AM by mgilbert :: 0 Comments
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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: Committed Information Rate

Posted Monday, August 20, 2007 7:50 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q3/cir.mp3
OK - so I got sick of themes for one day! I looked through my little library of PodSnacks and found I had a few on frame relay . Now you might be tempted to say that this is a waste of time because frame relay is a legacy technology or service, but it Read More...

PodSnacks: Ethernet over SONET

Posted Wednesday, June 20, 2007 8:33 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q2/eos.mp3
I'm on the road this week and teaching a class on optical networks and a bit of wireless. So I figured I'd just harness some of the material I'm teaching for today's PodSnack. SO for today I've chosen to talk about Ethernet over SONET Read More...

PodSnacks: Virtual Circuit

Posted Friday, March 30, 2007 6:00 AM by mgilbert :: 0 Comments
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Attachment(s): http://podcast.hill-vt.com/podsnacks/2007q1/virtual_circuit.mp3
Packet networks come in two basic flavors: datagram or virtual circuit . Today, Mark is going to walk you through the definition of a virtual circuit, and examples of places where you can find them. You can listen to (or download) the PodSnack by clicking Read More...
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