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Today's Top Pick

Brocade to soon offer 100G routers

 

Brocade is ready to give Cisco and Juniper a run for the money in 100G Ethernet. The company later this month will unveil 100G Ethernet routers and modules that it claims will be "industry altering" and its "most significant networking platform development" since acquiring Foundry Networks in 2008.

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  • Cisco Cert Prep

    The Secret Life of an Analog Voice Port by Kevin Wallace

    In my last post I shared with you my vision of using this blog as a forum to provide Cisco certification resources (in the form of videos and practice questions). The idea is that we’ll focus on one exam a month. For September 2010, our exam is CVOICE.The first CVOICE video is now available for your viewing pleasure. This first video discusses the operation and configuration of analog voice ports. document.write(''); document.write(''); ... 4

  • Jon Oltsik

    Networking Nuggets and Security Snippets

    VMware vShield: A Good Start, but. . . by Jon Oltsik

    You've got to hand it to VMware -- it clearly understands the strengths and weaknesses of the ESX environment and is focused on improving the platform. Case in point at this week's VMworld when the company announced the VMware vShield family of security products. From the early announcement, it seems that vShield is composed of: * vShield Edge. To enable secure multi-tenancy, vShield Edge virtualizes data center perimeters and offers firewall, VPN, Web load balancer, NAT, and DHCP...

  • Cisco Cert Zone

    What to Consider After Passing CCNA by Wendell Odom

    If you want to work with Cisco, and you want certs, your opening moves are obvious. Although Cisco positions CCENT as its entry-level certification - the "E" even stands for Entry - the prerequisite cert for all the rest of the Cisco cert world is CCNA. However, once you get that CCNA, the choices are wide and varied. Today we'll take a look at some of the things to consider when reaching this point, with related polls. First, let's take a look at the Cisco cert tree in terms of prerequisites.... 1

  • Jim Duffy

    The Cisco Connection

    Cisco bug behind small scale Internet outage by Jim Duffy

    Cisco says it has patched a bug in its routers that was behind the outage affecting 1% of the Internet last week. As colleague Robert McMillan of the IDG News Service reported, an experiment run by Duke University and a European group responsible for managing Internet resources disrupted a small percentage of Internet traffic.The disruption was traced to a vulnerability in Cisco's IOS XR operating system, which runs on its CRS-1 and XR 12000 series routers. IOS XR routers took the experimental... 2

  • Jon Oltsik

    Networking Nuggets and Security Snippets

    RSA Security Extends Compliance to Virtualization by Jon Oltsik

    In between the cloud rhetoric and virtualization hyperbole at this year's VMworld, I'm starting to see a few significant announcements. RSA Security made one of these by introducing virtualization intelligence in its Archer compliance suite. What's the big deal? IT operations needs standard server configurations to meet compliance mandates and auditors need visibility into both physical and virtual servers. Neither group wants to jump through hoops to get what they need. This is a pretty...

  • Jim Duffy

    The Cisco Connection

    Skype under Cisco by Jim Duffy

    What would Cisco do with Skype? The Wall Street Journal offers some thoughts on this in the wake of speculation that Cisco might acquire the Internet voice and video calling company before it goes public.Reports surfaced over the weekend that Cisco has already made an offer for Skype. Blog TechCrunch posts that Cisco may have to offer a price comparable to Skype's target of raising $5 billion in its initial offering.  And purchasing Skype would seem to fit with Cisco's emphasis on unified... 7

  • Cisco Knowledge Share with Avner Izhar

    Is it safe to use a SIP trunk as your outbound dialing option? by Avner Izhar

    A recent product security announcement from Cisco and a blog post by Chris Jackson made me feel it may appear that SIP trunking is not secure enough as a PSTN (Public Switched Telephone Network) access method. Indeed if you plug your Communication Manager (or Communication Manager Express) directly to the internet or to your service provider's 'private' SIP cloud directly, you are at risk. But if you take the minimum security measures that I'll specify below, you should be fine. The risks... 2

  • Michael Morris

    Michael Morris: From the Field

    Cisco Unified Computing System is 75% Networking - Who Knew? by Michael Morris

    I thought I'd delve into a slightly less controversial subject this week (well, maybe). My technical background lacks significant hosting experience (servers, storage, operating systems, etc). I understand hosting systems and how to design them into networks, but I'm not going to argue the peculiarities of different Intel CPU designs. When Cisco announced the Unified Computing System (UCS) last year, I looked at it as Cisco's entrance to the hosting (server) market. While it was... 6

  • Michael Morris

    Michael Morris: From the Field

    Cisco Unified Computing System is 75% Networking - Who Knew? by Michael Morris

    I thought I'd delve into a slightly less controversial subject this week (well, maybe). My technical background lacks significant hosting experience (servers, storage, operating systems, etc). I understand hosting systems and how to design them into networks, but I'm not going to argue the peculiarities of different Intel CPU designs. When Cisco announced the Unified Computing System (UCS) last year, I looked at it as Cisco's entrance to the hosting (server) market. While it was... 1

  • Cisco Cert Prep

    One Exam per Month by Kevin Wallace

    Hey everyone; Kevin Wallace here. I’ve done some guest blogging for Network World off and on during the past few years. Now, I’m back for the long term, and thanks to the folks at Network World for my new blog title “Cisco Cert Prep.” As the name suggests, this blog is going to focus on helping prepare you to become Cisco certified.Admittedly, that’s a broad statement, because Cisco has so many certifications. Well, I’m primarily going to cover the CCNA, CCNP, and CCVP certification tracks. The... 13

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