RFC’s to read for CCIE R&S Lab

As my lab date gets closer I am reading a lot more than I thought I would be, I thought it would be non-stop labbing but I have discovered that I am learning a lot more than I ever thought I would from reading. I have created a page for RFC’s here the list is by […]

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OSPF &#8211 P-bit Setting in Type-7 LSAs

This post represents the solution and explanation for quiz-5.
It explains one of the Loop Prevention mechanisms in OSPF by using the P-bit in the LSA.

Proxy and Reverse Proxy Server

How does the internet work - We know what is networking

This will be a short Reverse Proxy Caching Overview that will explain what proxy is and what is reverse proxy all about. Normal proxy cache topology is one where the server called proxy server will be some kind of intermediate device between client and server. Proxy will receive all requests from clients and it will […]

Proxy and Reverse Proxy Server

An Introduction to the Nexus 6000

There's a new Nexus in the family, the Nexus 6000. Here are the highlights.

Quiz #6 &#8211 Routing protocols over IPsec

Your company is extending their network with a Remote Office in a different city. You configure an IPsec tunnel between the HeadQuarters and the Remote Office, then you run EIGRP over it, but soon you find out that the tunnel flaps up and down continuously. What is the problem?

PVTD-VR

CCIE Review Questions

I updated the CCIE page to include CCIE Supermemo questions. Please go to CCIE Supermemo Questions. As time progresses I’ll update more and more of these.

EBGP Peering Not Established over a Default Route

This post represents the solution and explanation for quiz-4. The quiz shows that, although the BGP speakers can reach each other, they do not establish an eBGP session. Read more to understand the problem.

Quiz #5 &#8211 OSPFv3 Default Route into a NSSA Area

Your company's network consist of a CORE block running OSPF Area 0 and multiple buildings with 2x distribution switches per building running OSPF NSSA areas.
You have asked your junior colleague to configure OSPFv3 (for IPv6) to match the same design as OSPFv2 (for IPv4), but something goes awfully wrong.

Getting IPv6 Done: A Step-by-Step Framework for Planning an IPv6 Deployment

TCP Handshakes, Routing, Hairpinning – Oh My!

TCP Handshakes, Routing, Hairpinning – Oh My!

TCP Handshakes, Routing, Hairpinning – Oh My!

Baby Bro, Part 3: Containers and Loops

• tables
• sets
• vectors
• records

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event bro_init()
    {   
    local letters = table([1] = "a", [2] = "b", [3] = "c");
    print letters;
    }   

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event bro_init()
    {
    local letters = table([1] = "a", [2] = "b", [3] = "c");
    
    for (key in letters)
        {
        print letters[key];
        }
    }

Find link errors with op script

Find link errors with op script

NAT &#8211 Port Forwarding in Both Directions

This post represents the solution and explanation for quiz-3.
NAT on Cisco IOS can be pretty frustrating sometimes and it may take time and practice to master it.

Save multiple Artboards as indiviudal EMF or WMF files in Adobe Illustrator CS6

I've been creating a set of networking icons in Adobe Illustrator. To get these in a usable vector format for Visio and OmniGraffle stencils I need them in EMF or WMF format. Unfortunately the built-in Export function in Illustrator doesn't support Artboards for EMF/WMF but instead outputs one single file, so I needed to find a different solution...

Save multiple Artboards as indiviudal EMF or WMF files in Adobe Illustrator CS6

I've been creating a set of networking icons in Adobe Illustrator. To get these in a usable vector format for Visio and OmniGraffle stencils I need them in EMF or WMF format. Unfortunately the built-in Export function in Illustrator doesn't support Artboards for EMF/WMF but instead outputs one single file, so I needed to find a different solution...

First of all, I needed to split my main AI file in to individual files for each Artboard.

To do this, I went to File > Save As > Adobe EPS and selected the Artboard option.

Next was to individually export these to EMF and WMF.

First choice was to create a Workflow in Automator but for some reason. Automator's Watch Me Do action was unable to recognise that Illustrator was open - It returned some error about the application not being open (even though it was).

Second choice was AppleScript, but as it turns out Adobe don't have the EMF or WMF available as formats for the export action in their AppleScript library.

Finally I found the "Actions" menu in Illustrator.

I created a new folder called "My Actions"

Create a new Action called "Export to EMF" and started recording the Continue reading

Save multiple Artboards as indiviudal EMF or WMF files in Adobe Illustrator CS6

I've been creating a set of networking icons in Adobe Illustrator. To get these in a usable vector format for Visio and OmniGraffle stencils I need them in EMF or WMF format. Unfortunately the built-in Export function in Illustrator doesn't support Artboards for EMF/WMF but instead outputs one single file, so I needed to find a different solution...