Category Archive: LAN/WAN

CCNA – DHCP Server and Options

CCNADHCPServer

This lab will cover the topics 5.3.a DHCP Server and 5.3.d TFTP, DNS, and gateway options from the Cisco Certified Network Associate (CCNA) blueprint. It will test your understanding and knowledge of configure DHCP Servers on Cisco IOS devices. Please use the initial configurations as a template for your lab utilizing whatever console means you …

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Permanent link to this article: http://www.packetpilot.com/ccna-dhcp-server-and-options/

CCNA – Static Host Route

CCNAHostRoute

This lab will cover the topic 3.8.c Host Route from the Cisco Certified Network Associate (CCNA) blueprint. It will test your understanding and knowledge of configure static host routes on Cisco IOS devices. Please use the initial configurations as a template for your lab utilizing whatever console means you have (GNS, Physical Gear, VIRL, etc). …

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Permanent link to this article: http://www.packetpilot.com/ccna-static-host-route/

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/

Route-Targets Explained

Router-Target Policy Visualization

  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

ThisIsRight

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/

SRT: Offline type 7 decrypt

I was recently working on deploying a new device into our network infrastructure. I was working off a configuration template that had a standard arguments for AAA leveraging TACACS+. I was offsite and had asked a fellow colleague to enter the new device into our ACS deployment to allow authentication and command authorization. The long …

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Permanent link to this article: http://www.packetpilot.com/srt-offline-type-7-decrypt/

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/

Cisco OSPF Plain Text Authentication

Continuing with our interior routing protocol discussion on authentication we are going to look at Cisco OSPF implementation of plain text authentication. While this isn’t the most widely used model for authentation with OSPF it is a viable option. The topology we are going to use is the same topology from the EIGRP authentication example. …

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

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