[j-nsp] BGP full mesh or route reflector

[Aaron1]

I’m planning a migration to move off my dual RR hub architecture which is on aging asr9k’s to newer mx960’s… and during my planning i’m thinking of adding a 3rd.  Just makes me feel better.

Aaron

> On Dec 5, 2025, at 9:12 AM, Mark Tinka via juniper-nsp <juniper-nsp at puck.nether.net> wrote:
> 
> 
> 
>> On 05/12/2025 14:31, Johan Borch via juniper-nsp wrote:
>> 
>> Hi!
>> 
>> In an SR/MP-BGP underlay, will it have a significant impact on device
>> performance if we use a full iBGP mesh instead of route reflectors or other
>> drawbacks? Let’s say we will end up with around 100 PE routers. These
>> routers will not carry an excessive number of prefixes (no full tables).
>> We can ignore the configuration part as configuration is auto-generated.
> 
> I'd say if you have 2 or more routers, go with RR's. You will always grow into more routers, and the RR-based iBGP routing will ease your scaling logistics.
> 
> It certainly won't complicate your life.
> 
> Mark.
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