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

[ringbit at mail.com]

Anyone else can give an opinion to those three questions?

Thanks.
T.

> Sent: Friday, July 20, 2018 at 12:43 AM
> From: "Aaron Gould" <aaron1 at gvtc.com>
> To: "Nick Cutting" <ncutting at edgetg.com>
> Cc: "ringbit at mail.com" <ringbit at mail.com>, "cisco-nsp at puck.nether.net" <cisco-nsp at puck.nether.net>
> Subject: Re: [c-nsp] OSPF+BGP and MPLS Q's
>
> 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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>