Thursday, March 18, 2010

Blessay: On CCIE Core Knowledge Waivers. The HP Fallout Continues. — UPDATED

Blessay: On CCIE Core Knowledge Waivers. The HP Fallout Continues. — UPDATED

March 16, 2010 by Greg Ferro · 11 Comments 

I’m bet­ting that the CCIE Core Knowledge Question waivers is because of HP. Oh, and mak­ing money.

Quiz: Redistributing Static Routes in EIGRP. Which of These Is Better ?

August 18, 2009 by Greg Ferro · 3 Comments 

I was work­ing on some changes today with a co-​​worker and was faced with this inter­est­ing ques­tion. There are a num­ber of ways to redis­trib­ute static routes in EIGRP, but one is def­in­itely bet­ter than the other. Tell me why ?

Cisco IOS Load Balancing for Blue Coat SGOS

Cisco IOS Load Balancing for Blue Coat SGOS

August 12, 2009 by Greg Ferro · 4 Comments 

Some time ago I used IOS SLB fea­ture on a C6500 to load bal­ance a pair of Blue Coat ProxySG. Here the con­fug­ur­a­tion and some notes.

Frame or Packets — Make Sure You Get It Right!

Frame or Packets — Make Sure You Get It Right!

August 6, 2009 by Greg Ferro · 9 Comments 

When you use the terms ‘frames’ or ‘pack­ets’ make sure you get it right!

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Too Many Directions, Too Much to Think About

July 31, 2009 by Greg Ferro · 2 Comments 

I’m work­ing on too many things — too many tech­no­lo­gies, too many vendors. How did I get here ?

Blessay: My Life of Study — Planning, Tips and Thoughts

February 10, 2009 by Greg Ferro · 8 Comments 

I was asked how I organ­ise myself to study, and how do I make time. It not really easy to write it out because I make choices that suit my life, but if someone wants my recom­mend­a­tions or sug­ges­tions, here they are.

More Racks From InternetExpert — Better Time Slots

October 26, 2008 by Greg Ferro · 1 Comment 

Internetwork Expert has announced more lab racks com­ing online in November. Most import­ant is the new time slots which recog­nise that not every cus­tomer lives in America and will suit more cus­tom­ers globally.

Blog:Considering CCIE Security Training Material

September 16, 2008 by Greg Ferro · 11 Comments 

I am ser­i­ously con­sid­er­ing whether to under­take my second CCIE exam by doing the CCIE Security. Since the credit crunch has cre­ated a down­turn in the mar­ket it is the best time to study. I am review­ing the train­ing resources avail­able and decid­ing which products might be worth purchasing.

On Passing My CCIE Exam in 2001 — Day Two

July 1, 2008 by Greg Ferro · 3 Comments 

So its the second day, I haven’t slept much. I am stressed. I ring the fam­ily to check that everything is fine, and get ready to go for the second round.

On My CCIE Lab Exam in 2001 — Day One

June 30, 2008 by Greg Ferro · 1 Comment 

When I passed my CCIE in 2001, I remem­ber both the jubil­a­tion and exhaus­tion of the moment. Also the loneli­ness, after all, my wife and chil­dren had been without a func­tional part­ner and father for more than year, and they were not there with me at the final moment.

Let me explain.

What Is a CCIE ?

June 14, 2008 by Greg Ferro · 3 Comments 

Originally pub­lished at Techtarget when I sent it to them for fun. Reproduced here because I wrote it, and it still seems funny today. Note it is deriv­at­ive from some joke that was around at the time.

Interestingly, much of the puns on CCIE study top­ics are for­got­ten tech­no­logy as mod­ern CCIE’s no longer study Token Ring, DLSW, Appletalk […]

IOS: Reverse SSH Console Access

IOS: Reverse SSH Console Access

May 29, 2008 by Greg Ferro · 6 Comments 

I recently needed to secure the reverse con­sole access using Cisco IOS router. Now for many years, we have been doing this over tel­net and the con­fig­ur­a­tion has been straight­for­ward. But con­fig­ur­ing it to sup­port SSH instead of tel­net is a little bit dif­fer­ent, awk­ward in fact.

Single Internet Connection but HA Infrastructure — Using Bridging Instead of Routing

Single Internet Connection but HA Infrastructure — Using Bridging Instead of Routing

February 20, 2008 by Greg Ferro · 1 Comment 

The cus­tomer had decided to build a host­ing plat­form, but could only arrange for a single inter­net con­nec­tion to that site due to loc­a­tion. However, all other hard­ware was duplic­ated for high avail­ab­il­ity. After con­sid­er­ing the options the fol­low­ing dia­gram was pre­pared show­ing the first pass at the design. This was the Internet Connection (100Mb Ethernet) con­nec­ted to the router, then con­nec­ted to a switch, which was inter­con­nec­ted by trunk to a second switch. The first layer of fire­walls is then connected.

Reserved IP Address Range for Testing — RFC 2544

February 5, 2008 by Greg Ferro · 1 Comment 

I have been look­ing at a multi host data centre and am using MPLS to securely share cer­tain resources and con­sid­er­ing what archi­tec­ture con­sid­er­a­tions for Network Management.
Lets define the prob­lem. Network Management is soft­ware and serv­ers that col­lect data from my net­work equip­ment and presents it to me in some use­ful form. Add to this […]