Tuesday, September 9, 2014

CCIE Route/Switch v5 GNS3 Lab: DMVPN QoS Profile (Micro-Lab)

Hey all!

Just a tiny lab today to cover one line of the CCIEv5 study guide: DMVPN QoS Profiling per-group from the head-end.

It's a very flexible technology that allows you to assign groups from the DMVPN 'spokes' and QoS policy from the DMVPN head-end (hub).

In this lab I've build a very small DMVPN which works perfectly, but lacks per-group QoS policy. You've been asked by your senior network engineer to add this, what she thinks will be a quick task.

Here's your topology: Go!


You can download the solved and unsolved lab here: http://1drv.ms/Zgmfpf. Try it yourself!

Please note that the 'solved' version shows a DMVPN policy which is different between each client DMVPN router. You could just as easily assign all client DMVPN tunnels to the same group, and control them all with the same policy. This lab shows how granular you can be.

Good luck!
kyler

Sunday, September 7, 2014

CCIE Route/Switch v5 GNS3 Lab: GRE P2P Tunneling and DMVPN over GRE

Hey all!

GRE tunneling is a fascinating topic. To a host traversing a GRE tunnel, the hops are transparent. A router that doesn't support a protocol can be made to route it with no changes to the older router - just encapsulate it in something the older router understands and you're good to go. And the commands for a DMVPN and P2P GRE tunnel can be written in such a way that they can be simply copy and pasted to a new router to have it dial in, peer with your IGP, and start injecting routes. It's an incredibly simple and powerful tool which allows for good security.

With the way corporate hacks are becoming bigger news items every day, I'd think any network engineer worth their salt is going to want to know how to encrypt traffic between controlled routers for just about everything. Even on private networks we now know the government is listening and copying data for analysis, and I'm just not cool with that. Call me a liberal, but I think our right to freedom from illegal search and seizure means something. And here's a way you can enforce it.

In the following topology I had a few different technologies to setup, so I created a clover-leaf type topology, where each leaf is a different tech, and you bridge them in the middle for seamless routing. I wrote out hopefully good instructions and requirements, as well as validation steps that should help those of you working the 'Unsolved' version, which you can download below.

Here's the topology:



Download the solved and unsolved versions here: http://1drv.ms/1rViikp

Good luck!
kyler

Monday, September 1, 2014

CCIE Route/Switch v5 GNS3 Lab: BGP Pathing, Scalability, Summarization (+ BONUS MPLS VPN, VRF)

Hey all,

This GNS3 lab covers a breadth of BGP and MPLS topics:
BGP pathing and route preference
BGP scalability using route-reflectors and peer-groups
BGP summarization and redistribution
MPLS VPN config using a redundant route-reflector config and private VRFs (similar to what ISPs use to create private networks for their customers)
MPLS basic interface config

The 'unsolved' version (which you can download below) has the IGPs and IPs configured for both the ISP network and both the HQ and remote network for CompanyA, which has asked you to come in and configure the BGP portions. Because you also work for the ISP, you'll need to configure their MPLS and BGP, configure an MPLS VPN, and configure private VRFs to keep the company's traffic separate. It's a big job - get started!

The topology looks like this:


You can download both the solved and unsolved GNS3 lab here: https://1drv.ms/f/s!AliOPzHSO-GngbgZiNH9YSAZv6hbhw

Good luck!
kyler

Sunday, August 31, 2014

CCIE Route/Switch v5 GNS3 Lab: OSPF IPv4 and IPv6 Neighbors, Network Types, and Path Selection

Hey all!

This lab covers OSPF on top of IPv4 and IPv6 to establish neighbors using different network types, tune those neighbors to converge in sub-second increments, and shows how you can use ospf interface cost to change the path OSPF selects to route packets around your network.

It's a really fun lab to build and work with, and I recommend you attempt it yourself! The solved and unsolved versions are available for download at the link below

Here's what it looks like:


You can download the lab here: http://1drv.ms/1vBv3U9

Good luck!
kyler

Thursday, August 28, 2014

CCIE Route/Switch v5 GNS3 Lab: BGP Peers, RouteReflectors, Scalability

Hey all,

This lab covers a portion of the BGP section of the CCIEv5 R/S study guide. This topology covers an OSPF topology with a BGP overlap, split into different sub-ASs inside a confederation. This allows a single route reflector to be assigned per sub-AS and relationship requirements are greatly reduced. Each sub-AS uses a different method of scalability - a method of reducing configuration lines and managing groups of neighbors at once.

Here's the topology:


Download the completed version here: http://1drv.ms/XWWcmQ

Enjoy!
kyler

Thursday, August 21, 2014

CCIE Route/Switch v5 GNS3 Lab: EIGRP Named Instances

Hey all,

So EIGRP is a great IGP -- it's fast, flexible, and supports a ton of options to help you run your business network easily. Cisco works hard to keep that up. And in late 2012/early 2013, they introduced a mode to help make it even easier to keep EIGRP instances straight: Named Instance mode. It allows for names to be assigned which help sort purposes and keep things in order, and allows the 'old'-style of EIGRP instances to be 'nested' inside these named instances. It sounds confusing, but it's simple in practice.

I organized the lab like a problem ticket, ala the CCNP T-Shoot exam and CCIE route/switch.

The lab request: Amazon and Microsoft's Bing division need help. They are running EIGRP to connect their businesses, and need someone to configure it. One of their VPs heard about this great 'named' mode of EIGRP and wants you to do that. He has created the names for you to use, and wants your company to configure it. They don't care about leaking routes, and just want to get this working yesterday. It's your job. Go!

You can download the solved and unsolved GNS3 labs , as well as the image file for a 7200 router I used for this lab. Download that all here: http://1drv.ms/1tmJhWE

Good luck!
kyler

Wednesday, August 20, 2014

CCIE Route/Switch v5 GNS3 Lab: Routing Protocol Authentication

Hey all,

This is again a pretty straight-forward lab where I set up simple four-node IGP networks (EIGRPv4, OSPFv2, OSPFv3) and then turn on authentication between the neighbors. It's something you should definitely be doing in your own production network to obfuscate your routing updates and keep unauthorized members from joining your IGP hive-mind.

I'll do something interesting on this one (and maybe on future labs). I'll post both the completed lab, like I've been doing previously, as well as an incomplete one with basic topology setup so you can complete it yourself.

The topology follows and you can find the download links below it.



Find both the incomplete and complete download here: http://1drv.ms/1s1g0hp

Good luck!
kyler