Category: Networking

Remote Troubleshooting Crossed Fiber Using Port Channels

Last year I was involved in assisting a datacenter core and access-layer refresh. In this case the IDF’s were reusing existing fiber patches and the run to the datacenter stayed in place. however, within the datacenter core equipment was placed across the room required new cross connects to be ran to the new core cabinet. …

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Permanent link to this article: http://www.packetpilot.com/remote-troubleshooting-crossed-fiber-using-port-channels/

Cisco Champions 2017 – A reason to reflect

tl;dr – THANK YOU ALL! Yesterday morning I opened up my Spark app and was surprised to see I was added to the Cisco Champions room. I checked my e-mail and saw nothing. I knew it was being announced soon do to some twitter chatter. After validating with members it was true. I was selected …

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Permanent link to this article: http://www.packetpilot.com/cisco-champions-2017-a-reason-to-reflect/

Bulk enable PIM via TCL

I’ve been working on doing some multicast labs lately and am constantly resetting my lab devices to their default configs and starting from scratch. As many of us know, to enable PIM on all of your interfaces you must go into each interface and enable it manually. There is no default command to enable PIM …

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Permanent link to this article: http://www.packetpilot.com/bulk-enable-pim-via-tcl/

Apps for a Network Engineer Part II: Windows

Windows for Network Engineers Part two in my series of apps for network engineers across the three major platforms. I previously did the post for Mac when I first refreshed my laptop and purchased my first new Mac in 8 years. Issued by work, my daily laptop is a Windows machine which is fine with …

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Permanent link to this article: http://www.packetpilot.com/apps-for-a-network-engineer-part-ii-windows/

Route-Targets Explained

  As I began to study MPLS L3VPNs I was excited to start flinging my fingers around the keyboard. However, I ran into a little snafu during my learning. All of the videos and configuration example I was finding didn’t separate the difference between the Route Distinguisher (RD) and the Route Targets. Most of the …

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Permanent link to this article: http://www.packetpilot.com/route-targets-explained/

Synapps Paging Delays – An HTTP/TCP Wireshark diagnosis

The Scenario goes like this: A Synapps – SA Announce paging and messaging server integrated with Cisco’s CUCM hosting around 30 phone to phone paging groups. The paging had been working fine for months and out of no where one of thirty particular groups was putting in multiple trouble tickets over multiple days that the …

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Permanent link to this article: http://www.packetpilot.com/it-was-broke-but-the-sharks-got-to-it/

Trouble shoot with TDR

This article is another example of trouble shooting by putting multiple pieces together. While it relies upon existing knowledge of the environment in which the article is based it should prove to be a good example of a trouble shooting process that will hopefully be able to spark some creative thinking the next time you …

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Permanent link to this article: http://www.packetpilot.com/trouble-shoot-with-tdr/

Apps for a Network Engineer Part 1: MAC

MAC for Network Engineers I am not going to play bias in anyway towards any particular apps. I’m surely not going to get into the debate between Windows or Apple as a primary computer. In fact, I’ve spent the last 4 years using Windows exclusively for work due to work issued laptops and the lack …

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Permanent link to this article: http://www.packetpilot.com/apps-for-a-network-engineer-part-1-mac/

Tracked Static Default Route

As common place in today’s networks redundancy is key. Applications are the key components to business obtaining revenue. More and more applications are becoming SaaS and ecommerce is here to stay. With that being said, many companies are moving to redundant connections to the internet. These connections could be through two different ISPs, or both …

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Permanent link to this article: http://www.packetpilot.com/tracked-static-default-route/

Cisco OSPF MD5 Authentication

Continuing with our OSPF and interior gateway protocols we will not look at an MD5 implementation utilizing OSPF on a Cisco router. We will again continue with our 3 router topology as used in both the EIGRP MD5 example and the OSPF plain text example. There are very few changes that will need to be …

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Permanent link to this article: http://www.packetpilot.com/cisco-ospf-md5-authentication/

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