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making a topology with cisco and juniper routers

Posted on 2009-07-07
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We have 8 routers in total.
6 cisco routers and 2 juniper routers....can anyone suggest a simple possible topology with these given routers to implement BGP, OSPF and MPLS at a time... it would be really helpful for me if you can attach the diagram along with your answer telling me all the OSPF areas, AS and other related parameters?
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Question by:shwaqar82
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by:bkepford
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What are the interfaces per router and which interfaces do you have the crossover cables to connect them together.
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by:shwaqar82
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Thanks a lot for your reply

There are 4 interfaces per router....2 eth and 2 serial
I just need a simple topology so that BGP, OSPF and MPLS can be configured easily in it
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by:bkepford
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Any switches? or are your ethernet just crossover?
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by:shwaqar82
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I have 1 switch with 16 fast ethernet ports
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by:bkepford
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Ok you most likey want an MPLS network running BGP over sort of a WAN link and the OSPF as you IGP is this correct? What I would sugest (if you have a router that can take the interfaces) is to build out one of your routers as a MPLS core router with at least 4 serial interfaces. I am not an expert on MPLS so what I say about the MPLS portion is going to be best guesses from my experience with it. I believe you can setup the MPLS network over the frame switch with some VRF statements on the FR switch. again not sure about that. This would then connect 4 routers to simulate four sites with two additional routers to either hang off two sites or a main site. With these two additional routers you can have them dual connected so that you could test to make sure that you can manipulate your OSPF network to except the routes you want them to have or they could be connected seperate and not dual homed to the network . Also how many OSPF areas are you looking for and what types are you looking to emulate.

Let me know if this is what your looking for and what your site preferences are.
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by:shwaqar82
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You said: "Ok you most likey want an MPLS network running BGP over sort of a WAN link and the OSPF as you IGP is this correct?"
Yes, this is exactly what I want and I didnt really get much what you said afterwards since I am not an MPLS expert either

I am looking for like 2  or 3 areas in OSPF and 2 AS in BGP
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by:bkepford
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Let me know if this works for you
Topology.jpg
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by:shwaqar82
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suppose if I want to swap the AS into OSPF areas and OSPF areas into the AS in your diagram....will that be technically correct? like I want 3 OSPF areas in 1 AS, with 3 other AS connected to it
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by:shwaqar82
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correction: I meant 4 OSPF areas in 1 AS and 3 other AS connected to it
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by:bkepford
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You wouldn't need to run BGP on all your routers just the edge. Is this what you want or are you wanting bgp on all routers?
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by:shwaqar82
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Actually I was willing to run OSPF inside an AS.....opposite of you have designed....can you redo your design making OSPF areas inside an AS connected with another AS
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by:bkepford
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Topology
Topology.jpg
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by:bkepford
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hmm didn't come through trying again
Topology.gif
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by:shwaqar82
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Thanks for your reply
So we can also easliy implement MPLS in it too, right?
Can you shed some light on that please?
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bkepford earned 500 total points
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As I stated before I am not a MPLS network expert but what I would say is that most people would implement the MPLS network in the WAN core of their network and setup their BGP to advertise the correct prefixes. Possibly do some redistribution back and forth as long as it is only the providers transit IPs and not the Internet routing tables.
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After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

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