ciscozine's blog

Preventing STP forwarding loops

Submitted by ciscozine
on February 4, 2009 - 3:24pm

The Spanning Tree Protocol is an OSI layer-2 protocol that ensures a loop-free topology for any bridged LAN. Spanning tree allows a network design to include spare (redundant) links to provide automatic backup paths if an active link fails, without the danger of bridge loops, or the need for manual enabling/disabling of these backup links.

DOCSIS 3.0: Modems Over 300 Mbps

Submitted by ciscozine
on January 30, 2009 - 6:00am

Cisco Systems is developing a cable modem that will use Broadcom’s recently announced DOCSIS 3.0 silicon to bond together eight downstream channels – letting cable providers, theoretically, pump Internet content down to subscribers at more than 300 Mbps.

Cisco IOS: Attack & Defense

Submitted by ciscozine
on January 30, 2009 - 5:56am

Surfing the web, I have found a nice talk on Cisco IOS Forensics and Exploits, explained during the 25C3: “Cisco IOS Attack & Defense - The State of the Art“.

What is 25C3?

Write a linux application and win US $50,000!

Submitted by ciscozine
on January 28, 2009 - 11:04am

Cisco is inviting application developers who “think outside the box”, to innovate and promote the concept of the network as a platform. This is your opportunity to build exciting Linux based applications on the Cisco Application Extension Platform (AXP), and win a share of the total prize pool valued at US $100,000.

But what is AXP?