[c-nsp] OSPF+BGP and MPLS Q's

[Aaron Gould]

I was waiting for that, lol

Sort of a long story, as everyone knows, networks usually have a story to tell in order to understand why they are the way they are.... If many of us sat back and designed a new network from the ground up, it would be pretty for a day or two, and then eventually grow into something else .... If you leave the company and a new guy comes in, he would probably say , "what idiot designed this network "    :/

.... Then when he left the company, someone else would come in and say the same thing about him, lol

originally I did have a backbone area 0 and a very small MPLS network with core IGP area 1, ...well, area 1 continued to grow, and area 0 was eventually decommissioned, and know area 1 remains :)

....I guess I could work through maintenance windows and convert everything to area 0, but I don't feel motivated to do so

Works fine

Aaron

> On Jul 19, 2018, at 5:34 PM, Nick Cutting <ncutting at edgetg.com> wrote:
> 
> Quick question as I am clueless on large SP networks (I'm a MSP guy not an ISP guy )- why not area 0.0.0.0 ?
> 
> 
> -----Original Message-----
> From: cisco-nsp <cisco-nsp-bounces at puck.nether.net> On Behalf Of Aaron Gould
> Sent: Thursday, July 19, 2018 6:08 PM
> To: ringbit at mail.com
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] OSPF+BGP and MPLS Q's
> 
> This message originates from outside of your organisation.
> 
> If you think your network is going to continue to grow , dual route reflector cluster is a huge must have in my mind, I love how you can add address families to one neighbor and let it bounce while the other neighbor stays up with all your routes still there
> 
> I have ran a 100 node single area OSPF (area 0.0.0.1) MPLS/LDP network for several years, I believe simplicity and only as much complexity as is required for the job
> 
> 
> Aaron
> 
>> On Jul 19, 2018, at 2:32 PM, ringbit at mail.com wrote:
>> 
>> Hi all,
>> 
>> I have some practical design questions.
>> 
>> 1. Is there a better way of doing the HA than having adjacencies to the router (can be 3 hops away) over two different VLANs and different OSPF cost over trunk links with BFD enabled? 
>> 2. Do you find less practical a MPLS network on a multi-area design vs a single-area design?
>> 4. At what point would you introduce RouteReflectors in the network 
>> (e.g. when 5, 10, 20 IBGP connections?)
>> 
>> Can come up with some more in the meantime ;)
>> 
>> Thanks!
>> Ton
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