EIGRP Notes Part 3

EIGRP Notes Part 3


Enabling EIGRP:
Router(confi)# router eigrp

Adding a network to EIGRP:
Router(config-network)# network [wildcard mask]
All interfaces belonging to the specified network will become EIGRP capable and advertised via EIGRP.EIGRP will summarize to classful boundaries by default.

An interface can be set to ''passive'' to prevent advertisement:
Router(config-router)# passive-interface
If an interface is included in the network configuration but set to passive, it will still be included in EIGRP advertisements. If an interface is not included in an EIGRP network, it will not be advertised in EIGRP.

Summarization in EIGRP
Summarization is key to preventing looping route queries (which leads to SIA condition).

Disable automatic summarization to classful addresses:
Router(config-router)# no auto-summary

Configure manual summarization on an interface:
Router(config-if)# ip summary-address eigrp

Stub Routers in EIGRP
Stub routers participate minimally in EIGRP, which reduces utilization of memory and CPU on the
router.
Often used in lieu of static routes in a hub-spoke topology to provide a standard configuration for all spoke routers.
Router(config-router)# eigrp stub [options]

receive-only - Prevents the router from advertising any routes
connected - Permits advertisement of connected networks (default)
static - Permits redistribution of static routes
summary - Advertises summary routes (default)

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Spring Design Alex set to launch in �early spring�

So come the first week of March, and Spring Design still has yet to reveal any signs of its dual screen Alex e-reader being available for pre-order, last seen at this year’s Consumer Electronics Show. �The company’s website has been reading “keep checking in and by the first week of March you’ll be able to preorder your Alex online”.

According to Engadget, Spring Design has said “that there were some slight issues with the order page and that it should be up within the “next week or two,” and Spring Design still plans to have the reader in customer’s hand’s by “early spring.”"

We look forward to seeing the Spring Design Alex, a dual-screen reader with 6-inch E Ink up top and 3.5-inch capacitive LCD, in, well, whenever “early spring” is slated to come.

[Spring Design]

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T-Mobile invites us to 'come experience the HTC HD2' on March 16; release on the 24th? (update: or 23rd!)

Like clockwork, we've just been dropped a line by T-Mobile USA asking us to join them for a very special media event to check out the HTC HD2 -- "a larger than life entertainment powerhouse" -- in fabulous New York City on the evening of March 16. That lines up nicely with the company's earlier assurances that we'd see a launch in March -- but what day in March, exactly? Well, we're hearing from a number of tipsters (including trusted sources) that the 24th is the day this thing breaks loose at retail, so set your watches and calendars accordingly -- assuming you haven't been wooed into Windows Phone 7 Series' tender, loving grasp, that is.

Update: MobiTV -- which has an app bundled with T-Mobile's version of the HD2 -- says the HD2 is launching on the 23rd, and frankly, they're probably in a position to know. Thanks, Stephen!

T-Mobile invites us to 'come experience the HTC HD2' on March 16; release on the 24th? (update: or 23rd!) originally appeared on Engadget on Mon, 08 Mar 2010 21:05:00 EST. Please see our terms for use of feeds.

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Analysts predict PS3 to emerge as victor of console wars

Even through Sony’s most recent network debacle and its constant search for profitability, research firm Strategic Analytics believes that the company’s Playstation 3 will rise up to dominate the ever-heated console wars in terms of lifetime units sold.

Strategy Analytics predicted that Sony will sell 127 million units over the course of the console’s life, although the Wii will still lead the PS3 in terms of annual sales. PCMag also says that the recent report also predicts that Nintendo will sell 103 million Wiis over the course of its existence. �Strangely enough, �numbers referring to anticipated�lifetime�sales of Microsoft’s Xbox360 platform were not released. �For 2010, SA predicted that sales�of the Wii are expected to reach 17.5 million units; the PlayStation 3 will sell 14.0 million; the Xbox 360, 10.5 million; and the PS2, 5.5 million.

In the time being, both Sony and Microsoft appear to be steering their respective game console architectures toward new directions. �Sony is rumored to have a mobile gaming platform in the works, and Microsoft CEO Steve Ballmer has publicly hinted at the possibility of new form factors for the Xbox platform.

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TiVo posts $10.2m loss, remains on deathwatch

We've had TiVo firmly on deathwatch since 2005, and although the company's shares have recently surged with the launch of the TiVo Premiere and another legal victory over Echostar, things are still looking somewhat bleak: the Q4 numbers are in, and everyone's favorite DVR company just posted a $10.2m loss. Why? For the same reason that's plagued the company for five damn years now: it's hard to sign up new subscribers when the cable company offers a similar good-enough product for less money, especially when TiVo can't access cable VOD. And let's be brutally honest here: we love TiVo and we're more than excited to get our Premiere review units, but we don't think a revised interface is going to stem the tide -- almost every feature of the Premiere is available on the TiVo HD, after all. We've offered up our suggestions on how to re-energize the company in the past -- that new QWERTY remote is a great start -- but until TiVo stops playing ball with the same cable companies that actively try and cut it off at the knees and starts going for the jugular with features and pricing, we don't think things are going to get any better.

TiVo posts $10.2m loss, remains on deathwatch originally appeared on Engadget on Mon, 08 Mar 2010 22:13:00 EST. Please see our terms for use of feeds.

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Another one bites the dust: Cisco steps out of the WiMAX game

It's still far, far too early to call WiMAX a dead technology, but with the second major infrastructure supplier moving away from it in as many months, that's a pretty damning sign, isn't it? After Alcatel Lucent's announcement that it would be scaling back WiMAX investment last month, Cisco has now pulled the plug on its own efforts, citing a desire to stay as "radio-agnostic" as possible in the 4G race. That makes sense for a company that hasn't traditionally played in the wireless game the same way stalwarts like Ericsson and Nokia Siemens have, but the move still lies in stark contrast to Cisco's 2007 acquisition of Navini Networks that brought a host of WiMAX-focused equipment into the fold. Of course, CDMA has managed just fine in the shadow of GSM's global domination over the past decade, so these early warning signs could amount a fat load of nothing by the time we've reached a 4G steady state.

Another one bites the dust: Cisco steps out of the WiMAX game originally appeared on Engadget on Mon, 08 Mar 2010 20:31:00 EST. Please see our terms for use of feeds.

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Nokia files patent for self-regenerating phone battery, powered by piezoelectrics

Cellular phone giant Nokia has filed for a patent �for a self-regenerating phone battery, or in their own words, a “piezoelectric kinetic energy harvester”. �The patent essentially involves a battery that�s �contained within a first frame that is coupled to a second frame by one or more piezoelectric elements.�

Similar to the�concept�of kinetic powered watches, which use motion to charge their batteries, Nokia’s technology proposes generating energy by kinetic movement. �Nokia plans to use this energy �to at least partially recharge the device battery�.

Nokia envisions a phone in which its heavier components, say, the battery and radio transmitter circuits, travel along a pair of rails perpendicular to one another, and finally coming into contact with the�capacitor, which charges the battery.

[via UnwiredView]

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