About the Author

Joe Harris, CCIE No. 6200 (R&S, Security & SP) is a Systems Engineer with Cisco Systems® specializing in Security. In addition to authoring Cisco Network Security Little Black Book, Joe has also been a technical reviewer for several Cisco Press publications and written articles, white papers, and presentations on various security technologies. He also assists various Certification Partners by beta testing their newest CCIE certification workbooks and has been recognized by Cisco as an SE Wall of Fame award winner.

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Need additional equipment in your lab?

December 23rd, 2007 • Related • Filed Under

Filed Under: Certification • General

Well while sipping on my daily dose of energy drinks and perusing through the blogosphere this morning I came across a pretty interesting post by Greg Oberfield over @ Network Gremlins for anyone using Dynamips/Dynagen to study for their CCIE lab or just needing or wanting additional hands on experience. Greg took a really cool approach to adding additional devices into his lab from Dynamips through the use of a USB hub. You can read just how Greg did this along with the specific equipment he used at the following link: 

It’s Alive

There Are 4 Responses So Far. »

1. 

   Comment by Roger on 24 December 2007:

   Internetwork Expert already made a tutorial using a USB NIC and its better.
2. 

   Comment by Joe Harris on 26 December 2007:

   Thanks Roger, do you have a link to the InternetworkExpert site that details the process so that everyone could benefit?
3. 

   Comment by Roger on 26 December 2007:

   sure,

   http://www.internetworkexpert.com/resources/iosonpc.htm
4. 

   Comment by Joe Harris on 5 January 2008:

   Roger,

   Thank you for the link but did I miss the section that explained how to take and map physical connections into your virtual routers like what Greg did in the original “It’s Alive” post? He took a USB hub and USB ethernet adapters and mapped those over to Ethernet interfaces on his routers running in Dynamips and plugged thosed interfaces into his 3550 switch so that the Dynamips routers could now interact with the other equipment in his lab. Like so:

   [[Router R1]]
   console = 2001
   model = 7200
   autostart = false
   slot0 = PA-C7200-IO-FE
   slot1 = PA-FE-TX
   slot2 = PA-4T
   slot3 = PA-A1
   F1/0 = NIO_linux_eth:eth2
   S2/0 = FRSW 1
   A3/0 = A1 1

   [[Router R2]]
   console = 2002
   model = 7200
   autostart = false
   slot0 = PA-C7200-IO-FE
   slot1 = PA-FE-TX
   slot2 = PA-4T
   slot3 = PA-A1
   F1/0 = NIO_linux_eth:eth3
   S2/0 = FRSW 2
   A3/0 = A1 2

   [[Router R3]]
   console = 2003
   model = 3640
   autostart = false
   slot0 = NM-4E
   slot1 = NM-4T
   S1/0 = FRSW 3
   S1/1 = FRSW 13
   S1/2 = R1 S2/1
   S1/3 = R2 S2/1
   E0/0 = NIO_linux_eth:eth4
   E0/1 = NIO_linux_eth:eth5

   Notice that his Ethernet interfaces on each router are mapped to a physical USB Ethernet adapter. I don’t think Brian does this in his explaination of Dynamips/Dynagen/GNS-3. Take a look at his .net file to get a better idea of what he actually did or then again I just over looked it …

   http://www.networkgremlins.com/files/lab.net.new