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	<title>8 Miles High</title>
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	<description>Explorations into cloud computing, virtualization, mobile computing, and IT infrastructure - by Darow Han</description>
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		<title>New Year = New Smartphone</title>
		<link>http://darow.wordpress.com/2011/12/30/new-year-new-smartphone/</link>
		<comments>http://darow.wordpress.com/2011/12/30/new-year-new-smartphone/#comments</comments>
		<pubDate>Fri, 30 Dec 2011 20:45:50 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Mobile computing]]></category>
		<category><![CDATA[Amazon]]></category>
		<category><![CDATA[Verizon]]></category>
		<category><![CDATA[Android]]></category>
		<category><![CDATA[Samsung]]></category>
		<category><![CDATA[4G]]></category>
		<category><![CDATA[galaxy Nexus]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=482</guid>
		<description><![CDATA[I just ordered my Samsung Galaxy Nexus, from Amazon Wireless (beta) . Didn&#8217;t even know that Amazon sold smartphones, and had stumbled on the site recently while searching for Galaxy Nexus discounts.  I was a little bummed that currently you cannot apply Amazon gift cards,  anyways I was still able to purchase for $229 with [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=482&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I just ordered my Samsung Galaxy Nexus, from <a href="http://wireless.amazon.com/dp/B0061R2A1S" target="_blank">Amazon Wireless</a> (beta) . Didn&#8217;t even know that Amazon sold smartphones, and had stumbled on the site recently while searching for Galaxy Nexus discounts.  I was a little bummed that currently you cannot apply Amazon gift cards,  anyways I was still able to purchase for $229 with upgrade pricing. I&#8217;ve been pleased with Verizon to date as far as service quality (mostly), and certainly have become a seasoned user and advocate for Android.</p>
<p>There&#8217;s also a new <a href="http://www.amazon.com/gp/browse/ref=trdrt_howto_store?ie=UTF8&amp;node=2242532011" target="_blank">Trade-in</a> site on Amazon, where you can quickly find trade-in values on electronics, books, DVDs, Blu-ray discs, and video games. My old HTC Incredible should fetch about $50 for trade-in, leaving my Net pricing on the Nexus around $180.</p>
<p>Will share first impressions once I&#8217;ve had a chance to get my mitts around the Galaxy Nexus. 4G here I come&#8230;</p>
<p>Happy New Year!</p>
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		<slash:comments>2</slash:comments>
	
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			<media:title type="html">darowh</media:title>
		</media:content>
	</item>
		<item>
		<title>Android Smartphone Matchup: Samsung Galaxy Nexus vs. Motorola Droid Razr</title>
		<link>http://darow.wordpress.com/2011/11/23/android-smartphone-matchup-samsung-galaxy-nexus-vs-motorola-droid-razr/</link>
		<comments>http://darow.wordpress.com/2011/11/23/android-smartphone-matchup-samsung-galaxy-nexus-vs-motorola-droid-razr/#comments</comments>
		<pubDate>Wed, 23 Nov 2011 18:03:10 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Mobile computing]]></category>
		<category><![CDATA[4G]]></category>
		<category><![CDATA[Android]]></category>
		<category><![CDATA[Blackberry]]></category>
		<category><![CDATA[Google]]></category>
		<category><![CDATA[LTE]]></category>
		<category><![CDATA[Motorola]]></category>
		<category><![CDATA[Nexus]]></category>
		<category><![CDATA[Nexus One]]></category>
		<category><![CDATA[Samsung]]></category>
		<category><![CDATA[Verizon]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=453</guid>
		<description><![CDATA[The smartphone market has matured dramatically since the last time (spring 2010) I was in the market for a new phone. Earlier this year Android surged into the lead for smartphone OS nationally and globally, ahead of IOS, Blackberry, Windows Phone and Symbian. The increased volume gives us a wider range of choices on the [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=453&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>The smartphone market has matured dramatically since the <a title="Anticipation for Nexus One (Verizon)" href="http://darow.wordpress.com/2010/03/10/anticipation-for-nexus-one-verizon/">last time</a> (spring 2010) I was in the market for a new phone. Earlier this year Android surged into the lead for smartphone OS nationally and globally, ahead of IOS, Blackberry, Windows Phone and Symbian. The increased volume gives us a wider range of choices on the Android platform, including niche devices with improved social networking or multimedia features.</p>
<p>I will be upgrading from my current <a title="HTC Droid Incredible: First Impressions" href="http://darow.wordpress.com/2010/06/30/htc-droid-incredible-first-impressions/">HTC Droid Incredible</a> on Verizon Wireless, which has exhibited remarkable reliability and burrowed into a comfortable spot in my front pocket. The Droid Incredible, which arguably helped launch the most recent Android wave along with the Motorola Droid, , has been showing its age lately. Looking at my wife and stepdaughter&#8217;s new HTC Thunderbolt, I marvel at the rapid response and 4G LTE speeds, and envy their shiny 4.3 inch super AMOLED displays.</p>
<p>The two current Android smartphones which I&#8217;m evaluating are the recently-announced <a href="http://www.google.com/nexus/register.html#/tech-specs" target="_blank">Samsung Galaxy Nexus</a> and <a href="http://www.motorola.com/Consumers/US-EN/Consumer-Product-and-Services/Mobile-Phones/DROID-RAZR-BY-MOTOROLA-US-EN" target="_blank">Motorola Droid Razr</a>. It&#8217;s ironic that the Samsung Galaxy device is named &#8220;Nexus&#8221; since last year I was <a title="HTC Droid Incredible on Verizon (no Nexus One)" href="http://darow.wordpress.com/2010/04/29/htc-droid-incredible-on-verizon/">originally planning</a> to purchase the Google Nexus One, which eventually only saw limited release. (Too much Nexus &#8211; have been working with lots of <a title="Cisco Nexus 5596′s with Redundant Uplinks to Catalyst 6509 Core’s Using vPC" href="http://darow.wordpress.com/2011/08/31/cisco-nexus-5596s-with-redundant-uplinks-to-catalyst-6509-cores-using-vpc/">Cisco Nexus</a> switches this year too)</p>
<p><a href="http://darow.files.wordpress.com/2011/11/razr.png"><img class="size-medium wp-image-458 alignleft" title="razr" src="http://darow.files.wordpress.com/2011/11/razr.png?w=195&#038;h=300" alt="" width="195" height="300" /></a></p>
<p style="text-align:center;"><a href="http://darow.files.wordpress.com/2011/11/samsung-galaxy-nexus-unlocked-angle.jpg"><img class="size-medium wp-image-459 aligncenter" title="samsung-galaxy-nexus-unlocked-angle" src="http://darow.files.wordpress.com/2011/11/samsung-galaxy-nexus-unlocked-angle.jpg?w=176&#038;h=300" alt="" width="176" height="300" /></a>(Pictures not to scale)</p>
<p>The Motorola Droid Razr is currently available, and lists for $299 at <a href="http://www.verizonwireless.com/b2c/store/controller?item=phoneFirst&amp;action=viewPhoneOverviewByDevice&amp;deviceCategoryId=1" target="_blank">Verizon</a>. The Samsung Galaxy Nexus will be available first from Verizon Wireless, but pricing and availability has not yet been announced.</p>
<p>The devices match up very closely to each other, with Samsung Galaxy Nexus distinguished as the first smartphone installed with Android 4.0 (Ice Cream Sandwich), and the Droid Razr coming in lighter and thinner though with a smaller screen. Having handled the Razr, I can attest that it&#8217;s very comfortable in your hand, however for me the tie-breaker will likely be Ice Cream Sandwich.</p>
<p>Here&#8217;s a chart comparing the primary features:</p>
<table border="1" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td valign="top" width="163"></td>
<td valign="top" width="348"><strong>Samsung Galaxy Nexus</strong></td>
<td valign="top" width="312"><strong>Motorola Droid Razr</strong></td>
</tr>
<tr>
<td valign="top" width="163">Screen</td>
<td valign="top" width="348">4.65&#8243; HD(1280 x 720) Super AMOLED</td>
<td valign="top" width="312">4.3” Super AMOLED</td>
</tr>
<tr>
<td valign="top" width="163">CPU</td>
<td valign="top" width="348">1.2 GHz dual core processor</td>
<td valign="top" width="312">1.2GHz dual core processor</td>
</tr>
<tr>
<td valign="top" width="163">Memory</td>
<td valign="top" width="348">1GB RAM</td>
<td valign="top" width="312">1GB RAM</td>
</tr>
<tr>
<td valign="top" width="163">Storage</td>
<td valign="top" width="348">16GB or 32GB</td>
<td valign="top" width="312">16 GB microSD card pre-installed</td>
</tr>
<tr>
<td valign="top" width="163">Camera(s)</td>
<td valign="top" width="348">5 MP (rear facing camera), 1.3MP Front</td>
<td valign="top" width="312">8 MP (rear facing camera), 1.3MP Front with 720p HD</td>
</tr>
<tr>
<td valign="top" width="163">Android OS</td>
<td valign="top" width="348">Android 4.0 (Ice Cream Sandwich)</td>
<td valign="top" width="312">Android 2.3.5 (Gingerbread)</td>
</tr>
<tr>
<td valign="top" width="163">Weight</td>
<td valign="top" width="348">150g</td>
<td valign="top" width="312">127g</td>
</tr>
<tr>
<td valign="top" width="163">Dimensions</td>
<td valign="top" width="348">135.5 X 67.94 X 9.47 mm (LTE)</td>
<td valign="top" width="312">130.7 x 68.9 x 7.1 mm</td>
</tr>
<tr>
<td valign="top" width="163">Interfaces</td>
<td valign="top" width="348">Micro USB,  2 Mics, HDMI via Micro-USB adapter</td>
<td valign="top" width="312">Micro USB, HDMI® Micro, 3.5mm</td>
</tr>
<tr>
<td valign="top" width="163">Battery</td>
<td valign="top" width="348">1850mAh</td>
<td valign="top" width="312">1780 mAh Li Ion</td>
</tr>
<tr>
<td valign="top" width="163">Data</td>
<td valign="top" width="348">CDMA800, CDMA1900, LTE B13 700, WiFi, Bluetooth</td>
<td valign="top" width="312">
<p style="text-align:left;">CDMA800, CDMA1900, LTE B13 700, WiFi, Bluetooth</p>
</td>
</tr>
</tbody>
</table>
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		<media:content url="" medium="image">
			<media:title type="html">darowh</media:title>
		</media:content>

		<media:content url="http://darow.files.wordpress.com/2011/11/razr.png?w=195" medium="image">
			<media:title type="html">razr</media:title>
		</media:content>

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	</item>
		<item>
		<title>New Music Workstation</title>
		<link>http://darow.wordpress.com/2011/10/23/new-music-workstation/</link>
		<comments>http://darow.wordpress.com/2011/10/23/new-music-workstation/#comments</comments>
		<pubDate>Sun, 23 Oct 2011 22:43:46 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Digital audio]]></category>
		<category><![CDATA[Windows]]></category>
		<category><![CDATA[ASUS]]></category>
		<category><![CDATA[audio]]></category>
		<category><![CDATA[Intel]]></category>
		<category><![CDATA[SSD]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=441</guid>
		<description><![CDATA[I finally have my new studio workstation completed and running&#8230;took most of the summer (and fall) obtaining the components: Antec P183 Black enclosure (Quiet performance) Nexus 430W compact P/S Intel i5 2400 CPU, 3.10 ghz Quad core , 6 MB cache LGA1155 Intel 320 series SSD, 120 GB SATA ASUS P8Z68-V PRO Motherboard Corsair 16 [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=441&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I finally have my new studio workstation completed and running&#8230;took most of the summer (and fall) obtaining the components:</p>
<ul>
<li><a href="http://www.endpcnoise.com/cgi-bin/e/std/sku=antec_p183_case.html" target="_blank">Antec P183</a> Black enclosure (Quiet performance)</li>
<li>Nexus 430W compact P/S</li>
<li><a href="http://www.amazon.com/Intel-i5-2400-Processor-3-10GHz-LGA1155/dp/B004EBUXIA/ref=sr_1_1?ie=UTF8&amp;qid=1319408997&amp;sr=8-1" target="_blank">Intel i5 2400</a> CPU, 3.10 ghz Quad core , 6 MB cache LGA1155</li>
<li><a href="http://www.amazon.com/Intel-SATA-2-5-Inch-Solid-State-Drive/dp/B004U8ZHY2/ref=sr_1_1?s=electronics&amp;ie=UTF8&amp;qid=1319409081&amp;sr=1-1" target="_blank">Intel 320 series SSD</a>, 120 GB SATA</li>
<li>ASUS <a href="http://www.amazon.com/Asus-P8Z68-V-PRO-ASUS-Motherboard/dp/B00503EA80/ref=sr_1_1?s=electronics&amp;ie=UTF8&amp;qid=1319409049&amp;sr=1-1" target="_blank">P8Z68-V PRO</a> Motherboard</li>
<li>Corsair 16 GB DDR3-1600 RAM</li>
<li>Windows 7 Home Premium 64-bit, SP1</li>
</ul>
<p><a href="http://darow.files.wordpress.com/2011/06/p183_quarter21.jpg"><img class="size-full wp-image-382 aligncenter" title="P183_quarter2" src="http://darow.files.wordpress.com/2011/06/p183_quarter21.jpg?w=500" alt=""   /></a></p>
<p>The performance is incredible, web pages jump off the screen and wakes from Sleep in less than 2 seconds. Importantly, the entire workstation is whisper quiet, I can barely tell when it&#8217;s powered on, and apparently is rated at &lt; 20 dBA . The Intel 320 is my first SSD drive, and I&#8217;ve been suitably impressed with its speed.</p>
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		<media:content url="" medium="image">
			<media:title type="html">darowh</media:title>
		</media:content>

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			<media:title type="html">P183_quarter2</media:title>
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		<title>Cisco Nexus 5596&#8242;s with Redundant Uplinks to Catalyst 6509 Core&#8217;s Using vPC</title>
		<link>http://darow.wordpress.com/2011/08/31/cisco-nexus-5596s-with-redundant-uplinks-to-catalyst-6509-cores-using-vpc/</link>
		<comments>http://darow.wordpress.com/2011/08/31/cisco-nexus-5596s-with-redundant-uplinks-to-catalyst-6509-cores-using-vpc/#comments</comments>
		<pubDate>Wed, 31 Aug 2011 11:00:31 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[data center]]></category>
		<category><![CDATA[IT infrastructure]]></category>
		<category><![CDATA[Networking]]></category>
		<category><![CDATA[5596]]></category>
		<category><![CDATA[6509]]></category>
		<category><![CDATA[Catalyst]]></category>
		<category><![CDATA[Cisco]]></category>
		<category><![CDATA[Nexus]]></category>
		<category><![CDATA[Nexus 5000]]></category>
		<category><![CDATA[port channel]]></category>
		<category><![CDATA[Spanning tree]]></category>
		<category><![CDATA[uplink]]></category>
		<category><![CDATA[virtual port channel]]></category>
		<category><![CDATA[VPC]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=399</guid>
		<description><![CDATA[I recently had the opportunity to deploy a Cisco Nexus solution 5596UP switches for a healthcare customer. The Nexus switches represent Cisco&#8217;s presence in the Converged Fabric segment, which is gaining momentum recently as more IT shops seek to streamline datacenter infrastructure towards a &#8220;private cloud&#8221; approach. The Nexus 5000 series is primarily aimed at [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=399&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I recently had the opportunity to deploy a Cisco Nexus solution 5596UP switches for a healthcare customer. The Nexus switches represent Cisco&#8217;s presence in the Converged Fabric segment, which is gaining momentum recently as more IT shops seek to streamline datacenter infrastructure towards a &#8220;private cloud&#8221; approach. The Nexus 5000 series is primarily aimed at the edge, with Layer 3 capabilities available as an add-on.</p>
<p>The Nexus switches support vPC (Virtual Port Channels), which &#8220;allows links that are physically connected to two different Cisco Nexus 5000 Series switches or Cisco Nexus 2000 Series Fabric Extenders to appear as a single port channel by a third device.&#8221; (Cisco)</p>
<p>Here is a diagram of the planned configuration of vPC uplinks between the Nexus 5596UP and Catalyst 6509 (core) switches:<a href="http://darow.files.wordpress.com/2011/08/meditech-network-scrubbed-visio-24-august-2011.png"><br />
</a><a href="http://darow.files.wordpress.com/2011/08/network-scrubbed-visio-24-august-2011.png"><img class="aligncenter size-medium wp-image-423" title="Network scrubbed visio - 24 August 2011" src="http://darow.files.wordpress.com/2011/08/network-scrubbed-visio-24-august-2011.png?w=300&#038;h=181" alt="" width="300" height="181" /></a><a href="http://darow.files.wordpress.com/2011/08/meditech-network-scrubbed-visio-24-august-20111.png"><br />
</a><a href="http://darow.files.wordpress.com/2011/08/meditech-network-scrubbed-visio-24-august-2011.png"><br />
</a></p>
<p>To setup vPC on the Nexus switches, first you need to create a vPC peer-link between the pair of Nexus switches. The peer-link must include at least 2 interfaces.</p>
<p><strong>feature vpc</strong><br />
<strong>vpc domain 1</strong><br />
<strong>  role priority 4096</strong><br />
<strong>  system-priority 2000</strong><br />
<strong>  peer-keepalive destination 192.168.100.20</strong><br />
<strong>  auto-recovery</strong></p>
<p><strong>interface port-channel20</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  vpc peer-link</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong><br />
<strong>  spanning-tree port type network</strong></p>
<p><strong>interface Ethernet1/23</strong><br />
<strong>  description Link 1 to 5596-sw2</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong><br />
<strong>  channel-group 20 mode active</strong></p>
<p><strong>interface Ethernet1/24</strong><br />
<strong>  description Link 2 to 5596-sw2</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong><br />
<strong>  channel-group 20 mode active</strong></p>
<p>Repeat on the 2nd Nexus switch.</p>
<p>Next you need to create the virtual port-channels on the Nexus side. We will create one port-channel per uplink interface.</p>
<p><strong>interface port-channel1</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  vpc 1</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong></p>
<p><strong>interface port-channel2</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  vpc 2</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong></p>
<p><strong>interface Ethernet1/1</strong><br />
<strong>  description uplink to Core1-7/8</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong><br />
<strong>  spanning-tree guard loop</strong><br />
<strong>  channel-group 1 mode active</strong></p>
<p><strong>interface Ethernet1/2</strong><br />
<strong>  description uplink to Core2-6/7</strong><br />
<strong>  switchport mode trunk</strong><br />
<strong>  switchport trunk allowed vlan 1,100,103-104,901</strong><br />
<strong>  spanning-tree guard loop</strong><br />
<strong>  channel-group 2 mode active</strong></p>
<p>Again, repeat for the 2nd Nexus switch.</p>
<p>Notice that spanning-tree Loop Guard has been enabled on the uplinks to prevent STP looping issues. Also, the Allowed VLAN&#8217;s should match the VLAN ID&#8217;s allowed in the peer-link.</p>
<p>Finally, create the port channels on the Catalyst side. Here we will create ONE port channel per Catalyst, consisting of the uplinks from each Nexus switch, so that the Catalyst will see the Nexus pair as a single switch. Until this step is complete, the vPC status will show as down.</p>
<p><strong>interface Port-channel200</strong><br />
<strong> description &#8220;Connection to Nexus&#8221;</strong><br />
<strong> switchport</strong><br />
<strong> switchport trunk encapsulation dot1q</strong><br />
<strong> switchport mode trunk</strong><br />
<strong> no ip address</strong><br />
<strong> spanning-tree guard root</strong></p>
<p><strong>interface TenGigabitEthernet7/6</strong><br />
<strong> description NEXUS SW2 PORT1</strong><br />
<strong> switchport</strong><br />
<strong> switchport trunk encapsulation dot1q</strong><br />
<strong> switchport mode trunk</strong><br />
<strong> no ip address</strong><br />
<strong> spanning-tree guard root</strong><br />
<strong> channel-group 200 mode active</strong></p>
<p><strong>interface TenGigabitEthernet7/8</strong><br />
<strong> description NEXUS SW1 PORT1</strong><br />
<strong> switchport</strong><br />
<strong> switchport trunk encapsulation dot1q</strong><br />
<strong> switchport mode trunk</strong><br />
<strong> no ip address</strong><br />
<strong> spanning-tree guard root</strong><br />
<strong> channel-group 200 mode active</strong></p>
<p>Repeat this process for the 2nd Catalyst switch.</p>
<p>Now the vPC status should show as up-</p>
<p><strong>5596-sw1(config-if)# sh vpc</strong><br />
<strong>Legend:</strong><br />
<strong>                (*) &#8211; local vPC is down, forwarding via vPC peer-link</strong></p>
<p><strong>vPC domain id                   : 1   </strong><br />
<strong>Peer status                     : peer adjacency formed ok      </strong><br />
<strong>vPC keep-alive status           : peer is alive                 </strong><br />
<strong>Configuration consistency status: success </strong><br />
<strong>Per-vlan consistency status     : success                       </strong><br />
<strong>Type-2 consistency status       : success </strong><br />
<strong>vPC role                        : primary                       </strong><br />
<strong>Number of vPCs configured       : 2   </strong><br />
<strong>Peer Gateway                    : Disabled</strong><br />
<strong>Dual-active excluded VLANs      : -</strong><br />
<strong>Graceful Consistency Check      : Enabled</strong></p>
<p><strong>vPC Peer-link status</strong><br />
<strong>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;</strong><br />
<strong>id   Port   Status Active vlans    </strong><br />
<strong>&#8211;   &#8212;-   &#8212;&#8212; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;</strong><br />
<strong>1    Po20   up     1,100,103-104                                            </strong></p>
<p><strong>vPC status</strong><br />
<strong>&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-</strong><br />
<strong>id     Port        Status Consistency Reason           Active vlans</strong><br />
<strong>&#8212;&#8212; &#8212;&#8212;&#8212;&#8211; &#8212;&#8212; &#8212;&#8212;&#8212;&#8211; &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211; &#8212;&#8212;&#8212;&#8211;</strong><br />
<strong>1      Po1         up     success     success                   1,100,103-104         </strong><br />
<strong>2      Po2         up     success     success                  1,100,103-104    </strong><br />
<a href="http://www.cisco.com/en/US/docs/switches/datacenter/nexus5000/sw/layer2/503_n2_1/503_n2_1nw/Cisco_n5k_layer2_config_gd_rel_503_N2_1_chapter8.html#d6181e1254_navtitle" target="_blank"><br />
Here</a> is a useful Cisco reference document on vPC for the Nexus 5000 series.</p>
<p>Notes:</p>
<ul>
<li>This configuration only applies if there is NOT VSS established between the Catalyst 6509 core&#8217;s.</li>
<li>You can rely on Spanning Tree for establishing redundant links from a Nexus pair to dual Core&#8217;s, with only one uplink marked as active by STP. This customer insisted on getting the aggregated bandwidth from both 10Gb uplinks, as they planned to converge additional applications onto the Nexus in the future.</li>
<li> If at all possible, you should test this configuration in a lab before production deployment. At a minimum, deploy these changes during a maintenance window as there is a risk of network outage mainly due to looping behavior &#8211; spanning-tree root guard, loop guard are strongly recommended!</li>
</ul>
<p>Happy vPC&#8217;ing!</p>
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			<media:title type="html">darowh</media:title>
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			<media:title type="html">Network scrubbed visio - 24 August 2011</media:title>
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		<title>Just a Plug</title>
		<link>http://darow.wordpress.com/2011/06/24/just-a-plug/</link>
		<comments>http://darow.wordpress.com/2011/06/24/just-a-plug/#comments</comments>
		<pubDate>Fri, 24 Jun 2011 21:10:26 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Networking]]></category>
		<category><![CDATA[powerline]]></category>
		<category><![CDATA[ZyXEL]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=394</guid>
		<description><![CDATA[I&#8217;ve known about but shied away from powerline-based adapters in the past. Working in data centers on a routine basis, I&#8217;m used to CAT5/6 whenever possible, and wireless second. Having just moved into a new house with enough free space in the garage for a lab setup, I wanted to extend my network without playing [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=394&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve known about but shied away from powerline-based adapters in the past. Working in data centers on a routine basis, I&#8217;m used to CAT5/6 whenever possible, and wireless second. Having just moved into a new house with enough free space in the garage for a lab setup, I wanted to extend my network without playing the roll-your-own cable game, and stressing my knees while drilling holes, so I decided to test out the <a href="http://www.amazon.com/ZyXEL-PLA401v3-HomePlug-Powerline-Wall-plug/dp/B0039NM5SK/ref=cm_cr_pr_product_top" target="_blank">ZyXEL HomePlug Powerline</a> adapter.</p>
<p>Have to say that I was impressed at how simple setup was, just connect one adapter w/LAN cable into my core switch, install the other adapter into outlet in the garage and was online in no time. There is an encryption feature too, though I probably won&#8217;t be using it. The marketed speed is 200 Mbps which I have not yet tested, however speed tests through my ISP (Verizon FiOS) to the Internet were comparable to wired connections.</p>
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			<media:title type="html">darowh</media:title>
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		<title>Going all in on Windows 7&#8230;</title>
		<link>http://darow.wordpress.com/2011/06/03/going-all-in-on-windows-7/</link>
		<comments>http://darow.wordpress.com/2011/06/03/going-all-in-on-windows-7/#comments</comments>
		<pubDate>Fri, 03 Jun 2011 19:14:21 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Windows]]></category>
		<category><![CDATA[Antec]]></category>
		<category><![CDATA[Dell]]></category>
		<category><![CDATA[MIDI]]></category>
		<category><![CDATA[ProTools]]></category>
		<category><![CDATA[SSD]]></category>
		<category><![CDATA[Ubuntu]]></category>
		<category><![CDATA[Windows 7]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=371</guid>
		<description><![CDATA[Have decided to finally follow through with much-needed OS updates throughout the home network. My primary home PC, a Dell Inspiron 1525 laptop from about 3 years ago, is still running Vista dual-boot with Ubuntu Linux (8.04) . After completing my 24&#215;7 Ubuntu desktop experiment early last year, and seeing more and more recent symptoms [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=371&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Have decided to finally follow through with much-needed OS updates throughout the home network. My primary home PC, a Dell Inspiron 1525 laptop from about 3 years ago, is still running Vista dual-boot with Ubuntu Linux (8.04) . After completing my 24&#215;7 Ubuntu desktop experiment early last year, and seeing more and more recent symptoms of Vista nastiness&#8230;inevitable Windoze slowdowns, occasional blue screens (USB) and delays in sleeping and waking up, it&#8217;s time to upgrade!</p>
<p>I&#8217;ve been generally impressed with Windows 7 stability through heavy usage on daily workstations, primarily Dell laptops, and have come to appreciate little improvements like the multi-windowing taskbar.</p>
<p>Am waiting for my Windows 7 Home 3-pack upgrade  from Amazon, which should come also in handy for upgrading my music workstations. I need maximum compatibility for devices like USB digital audio and MIDI controller, plus I already have ProTools M-Powered for PC. In the meantime, need to finish researching sound-proofed PC cases like this one from <a href="http://www.antec.com/Believe_it/product.php?id=MTgwOA==&amp;lan=us" target="_blank">Antec</a>, and then will be ready to build an ultra-quiet machine possibly with SSD. But more on that in the future-</p>
<p><a href="http://darow.files.wordpress.com/2011/06/p183_quarter21.jpg"><img class="aligncenter size-full wp-image-382" title="P183_quarter2" src="http://darow.files.wordpress.com/2011/06/p183_quarter21.jpg?w=500" alt=""   /></a><a href="http://darow.files.wordpress.com/2011/06/p183_quarter2.jpg"><br />
</a><a href="http://darow.files.wordpress.com/2011/06/p183_quarter.jpg"><br />
</a></p>
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			<media:title type="html">darowh</media:title>
		</media:content>

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			<media:title type="html">P183_quarter2</media:title>
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		<title>Network and Application Analysis Tools</title>
		<link>http://darow.wordpress.com/2011/05/27/network-and-application-analysis-tools/</link>
		<comments>http://darow.wordpress.com/2011/05/27/network-and-application-analysis-tools/#comments</comments>
		<pubDate>Fri, 27 May 2011 21:20:14 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[data center]]></category>
		<category><![CDATA[IT infrastructure]]></category>
		<category><![CDATA[Networking]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=359</guid>
		<description><![CDATA[I&#8217;m currently evaluating network analysis tools to support with assessment projects at Dell. On a recent onsite engagement, a colleague suggested that I check out Fluke Networks&#8217; ClearSight Analyzer for application analysis. I was really impressed with its ease-of-use, and ability to quickly highlight application layer traffic. It provides real-time monitoring through an intuitive, appealing [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=359&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I&#8217;m currently evaluating network analysis tools to support with assessment projects at Dell.</p>
<p>On a recent onsite engagement, a colleague suggested that I check out Fluke Networks&#8217; <a href="http://www.flukenetworks.com/enterprise-network/network-monitoring/ClearSight-Analyzer" target="_blank">ClearSight Analyzer</a> for application analysis. I was really impressed with its ease-of-use, and ability to quickly highlight application layer traffic. It provides real-time monitoring through an intuitive, appealing display. <a href="http://darow.files.wordpress.com/2011/05/fn-clearsight_01a_.jpg"><img class="aligncenter size-full wp-image-363" title="Fn-ClearSight_01a_" src="http://darow.files.wordpress.com/2011/05/fn-clearsight_01a_.jpg?w=500" alt=""   /></a><a href="http://darow.files.wordpress.com/2011/05/fn-clearsight_01a_.jpg"><br />
</a>ClearSight Analyzer also supports Wireshark format captures, though it appeared to provide reduced detail for analysis compared to native ClearSight capture files. It also highlights errors or issues detected with a particular network flow. I&#8217;m finding that more projects are requiring network assessment and analysis to extend up to layer 7, so this tool from Fluke definitely deserves a closer look.</p>
<p>As well, I plan to dive deeper into Opnet&#8217;s<a href="http://www.opnet.com/solutions/application_performance/" target="_blank"> Application Performance </a>management Suite, in particular AppResponse Expert.</p>
<p>In the meantime, I always like to plug open-source projects, and <a href="http://www.wireshark.org/" target="_blank">Wireshark</a> is absolutely a must-have tool for network analysis. It does demand some investment to uncover more advanced functionality, but the effort is well worth it simply for the exposure to application-specific protocols and data traffic.</p>
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		<title>HTC Droid Incredible: First Impressions</title>
		<link>http://darow.wordpress.com/2010/06/30/htc-droid-incredible-first-impressions/</link>
		<comments>http://darow.wordpress.com/2010/06/30/htc-droid-incredible-first-impressions/#comments</comments>
		<pubDate>Wed, 30 Jun 2010 23:46:03 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Mobile computing]]></category>
		<category><![CDATA[Android]]></category>
		<category><![CDATA[Apple]]></category>
		<category><![CDATA[Blackberry]]></category>
		<category><![CDATA[droid]]></category>
		<category><![CDATA[Google]]></category>
		<category><![CDATA[HTC]]></category>
		<category><![CDATA[IPhone]]></category>
		<category><![CDATA[Ipod]]></category>
		<category><![CDATA[Verizon]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=335</guid>
		<description><![CDATA[I&#8217;ve been meaning to post updates on this handy device, but have been unusually busy getting up to speed at a new job. More on that another time. The Breakdown Performance &#8211; With a 1 ghz Snapdragon CPU and 288 MB RAM, response time is quite snappy. Verizon&#8217;s 3G network is reasonably reliable, averaging 1 [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=335&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve been meaning to post updates on this handy device, but have been unusually busy getting up to speed at a new job. More on that another time.</p>
<p><strong>The Breakdown</strong></p>
<ul>
<li> Performance &#8211; With a 1 ghz Snapdragon CPU and 288 MB RAM, response time is quite snappy. Verizon&#8217;s 3G network is reasonably reliable, averaging 1 mbps downloads when tested at home.</li>
<li>Camera &#8211; Since I upgraded from a humble Blackberry Pearl, have taken many more snapshots using the excellent 8 megapixel camera on the Incredible. It&#8217;s easy to use and the flash works well, though have read reports that IPhone camera is still better&#8230;so what.</li>
<li>Usability &#8211; Android interface is really well-designed. Took me less than a day to feel comfortable. Having five screens allows you to set up lots of apps for quick navigation.</li>
<li>Form factor &#8211; Very light and easy to hold. Occasionally gets a little warm stuck in my pocket, a reboot helps.</li>
<li>Video and sound &#8211; Very bright and large 3.2 inch display easy on the eyes. But sometimes hard to view in direct sunlight. Sound quality beat out my Ipod Touch, Blackberry Pearl and CD Player in testing, it&#8217;s become my primary playing device in the car.</li>
<li>Apps &#8211; Pretty good selection, including techie and music-related apps. <a href="http://www.google.com/sky/skymap/" target="_blank">Google Sky Maps</a> is an Android-only special, and caused my sister to literally snatch my Droid away to gaze at the night sky!</li>
</ul>
<p><strong>Gripes</strong></p>
<ul>
<li>Seems like Yahoo Mail isn&#8217;t supported through a Wifi connection, which is annoying since I still haven&#8217;t made the full leap to GMail.</li>
<li>Accessories are still not widely available. Not a lot of protection until custom cases finally hit the market.</li>
<li>Android App Market is pretty good, but still playing catch-up to the IPhone App Store. We&#8217;re getting there, last quarter Android devices collectively outsold the IPhone globally.</li>
</ul>
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		<title>HTC Droid Incredible on Verizon (no Nexus One)</title>
		<link>http://darow.wordpress.com/2010/04/29/htc-droid-incredible-on-verizon/</link>
		<comments>http://darow.wordpress.com/2010/04/29/htc-droid-incredible-on-verizon/#comments</comments>
		<pubDate>Thu, 29 Apr 2010 20:41:06 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Mobile computing]]></category>
		<category><![CDATA[Android]]></category>
		<category><![CDATA[droid]]></category>
		<category><![CDATA[droid incredible]]></category>
		<category><![CDATA[Google]]></category>
		<category><![CDATA[HTC]]></category>
		<category><![CDATA[HTC Droid Incredible]]></category>
		<category><![CDATA[incredible]]></category>
		<category><![CDATA[Nexus One]]></category>
		<category><![CDATA[t-mobile]]></category>
		<category><![CDATA[Verizon]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=310</guid>
		<description><![CDATA[Happy to report that I will be upgrading to an HTC Droid Incredible in the very near future. I had been waiting months for the Android-based Google Nexus One to arrive on Verizon, since I&#8217;m also planning to move off T-Mobile. Both models sport similar features, performance, and form factor in addition to running on [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=310&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>Happy to report that I will be upgrading to an <a href="http://www.verizonwireless.com/b2c/index.html" target="_blank">HTC Droid Incredible</a> in the very near future. I had been waiting months for the Android-based <a href="http://www.google.com/nexusone" target="_blank">Google Nexus One</a> to arrive on Verizon, since I&#8217;m also planning to move off T-Mobile. Both models sport similar features, performance, and form factor in addition to running on the much-touted open-source Android 2.1 OS, but several <a href="http://www.wirelessandmobilenews.com/2010/04/review-droid-incredibleverizon-aka-htc-incredible-review-of-reviews.html" target="_blank">reviews</a> including <a href="http://reviews.cnet.com/cell-phones/htc-droid-incredible-verizon/4505-6454_7-34064029.html#cnetReview" target="_blank">CNET</a> have given the edge to the HTC Droid Incredible. I&#8217;m especially excited about the 8 megapixel digital camera, 802.11n for wi-fi up to 108 mbps (optimal), and the 8 GB of internal memory.</p>
<p>Here is a useful first look at the Droid Incredible courtesy of ZDNet-</p>
<span style="text-align:center; display: block;"><a href="http://darow.wordpress.com/2010/04/29/htc-droid-incredible-on-verizon/"><img src="http://img.youtube.com/vi/gNb7s_WsHvc/2.jpg" alt="" /></a></span>
<p>But the final straw in favor of DI over Nexus One was the somewhat surprising recent <a href="http://www.examiner.com/x-8134-SF-Gadgets-Examiner~y2010m4d26-Nexus-One-officially-not-headed-to-Verizon" target="_blank">news</a> that Google will not be releasing Nexus One on Verizon at all, after much teasing about a Spring release date.</p>
<p>Will need to get to the store soon after reports that the smartphone is already <a href="http://www.examiner.com/x-8134-SF-Gadgets-Examiner~y2010m4d29-HTC-Droid-Incredible-sold-out-at-Verizon-wont-ship-until-May-4th" target="_blank">sold out</a> at Bay Area Verizon Wireless retailers!</p>
<p style="text-align:center;"><a href="http://darow.files.wordpress.com/2010/04/resized_incredible1.jpg"><img class="aligncenter" title="resized_incredible1" src="http://darow.files.wordpress.com/2010/04/resized_incredible1.jpg?w=180&#038;h=296" alt="" width="180" height="296" /></a></p>
<p><a href="http://phones.verizonwireless.com/htc/incredible/" target="_blank"></a></p>
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		<title>Anticipation for Nexus One (Verizon)</title>
		<link>http://darow.wordpress.com/2010/03/10/anticipation-for-nexus-one-verizon/</link>
		<comments>http://darow.wordpress.com/2010/03/10/anticipation-for-nexus-one-verizon/#comments</comments>
		<pubDate>Wed, 10 Mar 2010 23:39:05 +0000</pubDate>
		<dc:creator>Darow Han</dc:creator>
				<category><![CDATA[Mobile computing]]></category>
		<category><![CDATA[Android]]></category>
		<category><![CDATA[Blackberry]]></category>
		<category><![CDATA[Google]]></category>
		<category><![CDATA[Nexus One]]></category>
		<category><![CDATA[Tmobile]]></category>
		<category><![CDATA[Verizon]]></category>

		<guid isPermaLink="false">http://darow.wordpress.com/?p=293</guid>
		<description><![CDATA[I&#8217;ve been in the market for a smartphone for some time, caught between reluctance to part with my trusty, crusty Blackberry Pearl (T-Mobile) and avoidance of the IPhone due to AT&#38;T carrier lock-in and a persistent distrust of Apple (to be explored further). Have been using a Pearl for more than 3 years since Version [...]<img alt="" border="0" src="http://stats.wordpress.com/b.gif?host=darow.wordpress.com&amp;blog=6705518&amp;post=293&amp;subd=darow&amp;ref=&amp;feed=1" width="1" height="1" />]]></description>
			<content:encoded><![CDATA[<p>I&#8217;ve been in the market for a smartphone for some time, caught between reluctance to part with my trusty, crusty Blackberry Pearl (T-Mobile) and avoidance of the IPhone due to AT&amp;T carrier lock-in and a persistent distrust of Apple (to be explored further). Have been using a Pearl for more than 3 years since Version 1, and always appreciated the compact form factor, but the small screen and sluggish performance are no longer acceptable. On top of that, I&#8217;ve noticed significant call quality degradation on the T-Mobile network in the last couple years, not to mention terrible delays using the Blackberry Internet service.</p>
<p><a href="http://darow.files.wordpress.com/2010/03/google-nexus-one.jpg"></a><a href="http://darow.files.wordpress.com/2010/03/google-nexus-one1.jpg"><img class="aligncenter size-medium wp-image-298" title="google-nexus-one" src="http://darow.files.wordpress.com/2010/03/google-nexus-one1.jpg?w=180&#038;h=300" alt="" width="180" height="300" /></a></p>
<p>The Google <a href="http://www.google.com/phone/" target="_blank">Nexus One</a> from the Android family has caught my attention, and continues to garner generally glowing <a href="http://www.pcworld.com/article/186826/googles_nexus_one_the_reviews_are_in.html" target="_blank">reviews</a>. In addition to the appealing form factor, packed feature-set and Snapdragon 1 Ghz CPU, I&#8217;m impressed with the new approach Google is taking with the Android devices, not only with open source code (observed by none other than <a href="http://torvalds-family.blogspot.com/2010/02/happy-camper.html" target="_blank">Linus Torvalds</a>) but also carrier independence. The Nexus One is currently only available through T-Mobile, but the latest <a href="http://www.product-reviews.net/2010/03/09/verizon-google-nexus-one-release-date-confirmed/" target="_blank">rumors</a> appear to confirm an upcoming release date of March 23 through Verizon. Strangely, it&#8217;s been difficult to see a Nexus One in person, as a T-Mobile store employee here in LA recently informed me that &#8220;no stores&#8221; were carrying demo versions. Have to wonder if the same policy will apply with Verizon, or is this another case of software-centricity overwhelming marketing good sense?</p>
<p>In any event, anticipation is building and still have to decide whether to purchase through Google online or Verizon.</p>
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