So you just lit up your new high-speed link between Data Centers but are unpleasantly surprised to see relatively slow file transfers across this high speed, long distance link — Bummer! Before you call Cisco TAC and start trouble shooting your network, do a quick calculation of what you should realistically expect in terms of [...]
VMotion on steroids with FCoE
August 14, 2008 By 5 Comments
Want lightning fast VMotion? Just install a CNA (Converged Network Adapter) from Emulex or QLogic and connect it to a Cisco Nexus 5000. Mario Apicella of InfoWorld did just that and writes: “I had intended to post a movie clip of the test VM moving to the new ESX server using VMotion, but the action [...]
Brocade buys Foundry, validating Cisco Data Center Strategy
July 21, 2008 By 4 Comments
Brocade announces intent to buy Foundy — Why would Brocade do this? The writing was on the wall … Either become a Ethernet company or get crushed by Cisco. Related PostsVMware 10GE QoS Design Deep Dive with Cisco UCS, Nexus Nexus 1000V’s 17 load balancing algorithms, dedicated to Nicholas Weaver at EMC Data Center Networking [...]
Re-certified
July 4, 2008 By 3 Comments
I passed the 350-001 Routing & Switching Exam to re-certify my CCIE status. This was the new 3.1 version of the test with 105 questions. I can tell you that this test is no walk in the park, they have definitely cranked up the difficulty here. Word of advice: Know your OSPF cold! Related PostsSwitchport Configurations Explained VLAN Trunking [...]
Cisco Nexus 5000 announced Today
April 8, 2008 By 22 Comments
What is the new Cisco Nexus 5000? — The industry first switch to deliver unified server I/O, providing Fiber Channel and IP traffic over a single 10G Ethernet port to the server. Nexus 5000 delivers very low latency wire speed lossless Ethernet service to the server. Related PostsNexus 5000 & Nexus 2000: New technology requires new thinking [...]
A few words about Nexus 7000
March 30, 2008 By 15 Comments
If you are not familiar with the innovation in Cisco Nexus 7000 it’s easy to just dismiss it as “Cisco’s answer to Force10″. The reality is, the Nexus 7000 is much more than just a “me too” 10-gig switch to compete with likes of Force10, Foundry, Extreme, and others — Nexus is a complete technology [...]
CCIE R&S Written Test Study Notes – Part 1
January 6, 2008 By 1 Comment
Well, it’s that time again. Time to re-certify my CCIE R&S certification by passing the written test. To prepare for the re-certification test I am reading from the book CCIE Routing and Switching Exam Guide Volume 3 (a very good book!). The bottom line is this: The CCIE Routing and Switching written exam is a [...]
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