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Corinex AV200 Introduction Manual

Powerline and cablelan set the pace for alternative home networking
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Corinex AV200 Powerline and CableLAN set the pace for alternative
home networking
Tim Higgins
March 24, 2006 15:20
Introduction
Product
Corinex AV200 Powerline Ethernet and CableLAN Adapters
Summary
Ethernet to powerline and coax bridges targeted at household
distribution of IPTV and other streaming media without running
CAT 5
Pros
• 2X - 3X better average throughput than HomePlug Turbo
• Multicast binding and QoS and VLAN tagging
Cons
• Does not interoperate with HomePlug devices (and vice versa)
• Severely interferes with HomePlug devices (and vice versa)
• QoS features diffi cult to confi gure
• Expensive (Powerline $159, CableLAN $179)
My last look at powerline networking products was in the HomePlug Turbo Adapter Round Up, where I
found that the "85 Mbps" advertised speed turned out to be typically 10 Mbps of real, usable bandwidth.
Although this is twice the 5 Mbps delivered by non-turbo HomePlug 1.0 products, it's still borderline for
IPTV service providers, which is the target customer. The real HomePlug solution for video streaming lies
in HomePlug AV, which, unfortunately seems to remain six to nine months away - as it has for the past
year or so.
This delay has opened a market window that Madrid-based DS2 (Design of Systems on Silicon) has
attacked with a vengeance using its high speed "200 Mbps" powerline technology. DS2's success to date
has been mostly in markets outside the U.S., since that's mainly where the action is in IPTV right now. The
company claims an installed base of around 600,000 units with 30,000 in Spanish telecommunications
company Telefonica alone. DS2's success seems likely to continue, given that Netgear recently
announced that it will be shipping products aimed at the IPTV market, based on DS2's technology.
At a Glance

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Summary of Contents for Corinex AV200

  • Page 1 Corinex AV200 Powerline and CableLAN set the pace for alternative home networking Tim Higgins March 24, 2006 15:20 Introduction At a Glance Product Corinex AV200 Powerline Ethernet and CableLAN Adapters Summary Ethernet to powerline and coax bridges targeted at household...
  • Page 2 (Figure 1) contains only an AC line cord receptacle and 10/100 Ethernet RJ45 jack. Figure 1: AV200 Powerline rear panel and specifi cations Figure 2 shows the back panel of the AV200 Coax version, which differs only in the addition of a coax “F” type connector.
  • Page 3 MDI / MDI-X capability built in, so you can connect any Ethernet device you like without having to fi nd a crossover cable. Note that the AV200 adapters are designed as bridges and support connection of up to 64 devices, 32 of which can be AV200 Powerline or Coax adapters.
  • Page 4 Inside Details - Coax Figure 4’s photo shows the AV200 Coax inside view, which as noted above, is very similar to the powerline version. You can see that the AC line coupling components in the lower right-hand corner are not loaded...
  • Page 5 If you carefully compare the larger versions of Figures 3 and 5, you can see that the coax version board is slightly different, with a cluster of passive components that have no blank mounting pads in the powerline version of the board. Figure 5: AV200 Coax Internal view w/o heatsink...
  • Page 6 Setup And Administration Both the AV200 adapters come set so that they will just plug and play if you don’t feel the need to mess with their settings. Like HomePlug adapters, they use a Network Identifi er to let you keep your network separated from your neighbor’s.
  • Page 7 Utility provides is that you don’t need to futz with your computer’s IP address settings, since the utility can fi nd and connect to AV200 adapters with any LAN IP address scheme. Note that this utility is relatively new and didn’t come on the CD included with the product. Corinex said the utility has since...
  • Page 8 Alternatively, if you have copied down the MAC address from the label on the bottom of each of your AV200 devices, you can enter it into the MAC address fi eld at the right of the page and click the Confi gure button.
  • Page 9 The MAC page lets you force an AV200 to End Point (EP) or Access Point (AP) mode - the latter only if you’ve entered a Network Identifi er, however. Each AV200 network has a single AP and up to 31 EPs, with APs in charge of sharing channel access within the nodes of each network.
  • Page 10 Multimedia content is often distributed using IP multicasting, which allows the same content to be more effi ciently delivered to multiple recipients. Figure 10 shows the AV200’s Multicast settings, which allow bindings between adapter MAC addresses and multicast IP addresses. No bindings are set by default, and the results are saved in the adapter’s non-volatile RAM (NVRAM).
  • Page 11 Ethernet port. This is another feature for network operators, since no VLAN fi ltering is done in the AV200 itself. Controls are provided to set the VLAN Tag (or ID) and set the priority from 0 to 7. QoS controls (called Priority Confi guration in the User Guide and web interface) come set to a default priority of 2 and Criterion 1 and 2 set to “none”.
  • Page 12 Performance - Powerline For the AV200 powerline’s performance testing, I used the same fi ve test locations around my home that I used for the HomePlug Turbo Roundup testing. Go here if you want the details on the locations and distances.
  • Page 13 Figure 13: AV200 powerline throughput comparison with HomePlug Turbo Figure 13 shows the results for the AV200 along with the results from the HomePlug Turbo roundup testing. I guess I can see why networking product manufacturers are willing to give up HomePlug interoperability to use DS2’s technology! The AV200 beat the best case HomePlug Turbo results (Netgear...
  • Page 14 6’ piece of RG 6 coax with an IxChariot test pair plugged into the adapters’ Ethernet ports. I ran the same script that I used for the AV200 powerline tests, with the results shown in Figure 16.
  • Page 15 I couldn’t effectively test that...yet! Instead I had to settle for simple tests using the two-way splitters that came packaged with each AV200 Coax adapter. For one test, I cabled the IN connectors of the two splitters together with a short piece of RG 6, then connected each AV200 Coax adapter to one of each splitter’s OUT connectors in a back-to-back splitter confi...
  • Page 16 Network IDs. I modifi ed the IxChariot script used for the throughput testing so that in one case I gave the AV200 test pair a 10 second head start in one case and the HomePlug Turbo the head start in the other. I also had both scripts send data from the IxChariot console to the remote endpoints instead of one receive and one transmit used in the performance tests.
  • Page 17 I dinged the HomePlug Turbo folks for advertising 85 Mbps and delivering an average of 10, so let’s see if DS2 does any better. Table 1 compares the % reduction from the advertised maximum throughput for the Corinex AV200 powerline and Netgear XE104 “85 Mbps” (HomePlug Turbo) for each of my fi ve test locations.
  • Page 18 And, as usual, the consumer is once again thrown into the middle. Granted, that AV200 products aren’t intended to be a big retail item. But consumers could be put into the position of having to throw out any HomePlug products they have when they sign up for an IPTV service that uses DS2-based powerline technology to distribute the service throughout a home.