Friday, October 02, 2009

Next-gen NAT is coming; Why aren't more people using Cisco's IP SLA?

From Cisco Subnet; Why aren't more people using Cisco's IP SLA?
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Spotlight Story
Large Scale NAT Architectures

Jeff Doyle writes, "Traditional NAT has been used for fifteen or so years to enable the sharing of a small number of public IPv4 addresses by a larger number of privately-addressed devices. As we approach the depletion of public IPv4 addresses, broadband providers are looking at how to continue giving their customers public-facing IP addresses when there are no IPv4 addresses left to hand out. The answer seems rather obvious: If NAT has been effective at the provider-facing customer edge, it should also be effective at the customer-facing provider edge. That's the basis of Large Scale NAT (LSN). LSN adds another layer of translation, so that just as private IPv4 addresses are used on the inside of the CPE NAT they can also be used to assign addresses to the outside of the CPE NAT. " Read full story

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From Cisco Subnet
This is Network World's Cisco Subnet news alert in which we focus on the top items from Cisco Subnet, your daily source for Cisco news, blogs, discussion items, security alerts, giveaways and more.

Why aren't more people using Cisco's IP SLA?
Brad Reese: Cisco IP SLA has been embedded in most Cisco switches and routers for the past decade. This interview with Josh Stephens, VP and head geek of SolarWinds, talks about the company's new software that makes IP SLA easier to use.

Cisco pulls rug out from under RADVISION with Tandberg buy
The Cisco Subnet blog: Partners big and small need to be wary of Cisco, it seems. First, it bit the hand of resellers HP and IBM by developing its own blade servers and now it turned on RADVISION by buying Tandberg.

CCNA Security Part 1: What's on the Test?
Wendell Odom: I had this grand vision of a nice morning at the book store. Three books stacked on the table next to the easy chair, cup of coffee in hand. The books: The CCNA Security ECG (Exam Cert Guide), The Cisco Press CCNA Voice ECG, and the CCNA Wireless ECG. The goal: figure out what was on each exam, and then blog about it over the coming weeks.

The IPv6 Internet is Growing
Scott Hogg: IPv6 Internet traffic is increasing. The IPv6 default-free zone BGP routing table has doubled in size in a year. The number of organizations being allocated IPv6 address blocks is increasing but the total IPv6 Internet traffic volume is still very small.

Juniper is about to make a strategic blunder
Brad Reese: Two month ago, I blogged that Juniper was promoting vouchers offering 100% off its certification exams until the end of 2009. Well, Juniper is now advising that its ending the 100% off promotion on October 9, 2009.

Exploiting the human body, H1N1 virus
Jamey Heary: The H1N1 virus only takes about 3.2 Kbytes of data to code itself. A worm like Conficker takes over 112 Kbytes! It looks like Mother Nature has figured out how to write some super streamlined code.

A 10 year historical perspective on the worldwide CCIE count
Brad Reese: From July 2000 until September 2009 the total number of certified CCIEs has grown by 15,694. That averages around 1,743 per year, but that may changing.

Microsoft Subnet is giving away training from Global Knowledge and 15 copies of Microsoft Expression Web 3 In Depth. Cisco Subnet is giving away training from Global Knowledge and 15 copies of Building Service-Aware Networks. Google Subnet is hosting many new bloggers. Entry forms can be found on the Cisco Subnet and Microsoft Subnet home pages.

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October 02, 2009

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