Recent Articles
Written by brahadesh from on May 15th, 2009 | 0 Comments
Hey we have another contributed lab. This one comes from Brahadesh.. He put together a little lab based on a exercise from another site and contributed it here to us.
It’s great that you can find an exercise on the internet, whip it up real quick, work on it and share it afterward. It’s amazing how Dynamips/GNS3 allow such capability to lab and work out real world scenarios with little to no effortt.
Thanks for the share Brahadesh! Hope to see more..
Now onto the lab!
-Lenny
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Written by LBSources from http://www.gns3-labs.com on May 15th, 2009 | 3 Comments
Great! a new GNS3 release! Seems this one has some pretty nice improvements to it! As well as some notable fixes. Seems that development is a little slower than expected due to the departure of a few members of the GNS3 DEV team, but Jeremy and Xavier as still hard at it. Thank you guys for all of your hard work.
Here is the official announcement from Jeremy over at GNS3.net
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Written by pierky from http://pierky.tel/ on April 14th, 2009 | 1 Comment
Pierky put together a great exercise lab giving you a scenario and objective. The solution is in a DOC file in the archive package.
Scenario
We have a router connected to the ISP with two WAN connections:
- a Bronze link, with little bandwidth, on which we have a /30 subnet;
- a Gold link, with good performances, on which we have a /30 point-to-point subnet and an additional /24 routed subnet.
Note that ISP does not accept inbound traffic coming from a subnet that is not the one routed through the ingress interface: for example, we can’t send traffic from 1.1.1.0/24 out the Bronze link. One subnet, one link.
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Written by LBSources from http://www.gns3-labs.com on March 24th, 2009 | 1 Comment
Seems that all the hard work has paid off and GNS3 is now available on FreeBSD. This is directly from the GNS3.net site.
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Written by LBSources from http://www.gns3-labs.com on March 14th, 2009 | 0 Comments
This is an older lab that is part of the BGP series labs that Jeremy over at EvilRouters.net is building. The labs are great and they will surely serve someone some great lab experience by the time hes done with them all.
This lab picks up from:
Don’t get too confused - yes the topology has dramatically changed 
In Jeremy’s next lab he will use the local preference attribute to influence INBOUND BGP Routing
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Written by LBSources from http://www.gns3-labs.com on March 13th, 2009 | 3 Comments
REPOST
We have all experienced a time when working in GNS3 and we _think_ we saved the the topology and router configurations. So you open GNS3 and load that config, start them routers, watch them boot all the way to the painful prompt
Would you like to enter the initial configuration dialog? [yes/no]:
And your hard work is GONE!
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Written by pierky from http://pierky.tel/ on March 7th, 2009 | 19 Comments
I just arranged this lab I used when I was studying for CCNP, I hope someone will find it useful.
We have a 2 distribution blocks network linked with the core layer; all elements are dual linked to the upstream layer for redundancy.
Block 1 has L3 access switches, running EIGRP as stub routers. Distribution routers send default route only to the access switches, and perform route aggregation toward core routers.
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Written by pierky from http://pierky.tel/ on January 23rd, 2009 | 18 Comments
Another great lab from Pierky! Thanks!!
Routers P1, P2, P3 and P4 are in the core, just running OSPF in area 0. Each router has Loopback 0 with address 10.0.1.x (where x is the router number - P1 = 10.0.1.1).
Provider-edge routers PE1, PE2, PE3 and PE4 run OSPF in area 0 too; they have Loopback 0 with address 10.0.2.x.
Each PE routers has iBGP with P3, that is the route-reflector for AS 100.
All P and PE routers run LDP and are enabled for MPLS traffic-engineering.
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Written by LBSources from http://www.gns3-labs.com on January 11th, 2009 | 4 Comments
BGP for me is one hell of an interesting routing protocol. Until I got into working with enterprise networks, I never realized how much it was used. After working with it now for about 2 years, it’s really grown on me and is a part of the CCNP study which I cant wait to make it to. Even more so I cant wait to implement as many as I can Anyway onto the lab…
As a continuation from Jeremy’s Configuring Multilink PPP lab over at EvilRouters, and my GNS3 verison of it: EvilRouters-Multilnk PPP Lab - Here is part 2 of his series - This one is BGP Over Multilink PPP Lab
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