Saku,

Indeed. iBGP will be redundant and resilient, yes... with a cost, 90 seconds 
(timers) of unavailability and more 1-3 minutes to get back online. I know, we 
can change timers, bfd and so on...  
 
I used that before... but....

Not everyone have MX960, MX480 handling BGP in every part of the network, I 
don’t have...  I have QFX, hundreds of them. Now imagine in some MX, you have 
5/6 full routing table coming from upstream or peerings partners. Now 
experience a flap between two of those MX exchanging full routing table for a 
entire night....
At some point, routing engines become angry and stop updating routes(normally, 
MX have a baaad routing update rate). Doomsday have arrived! 

Everyone gets crazy, angry customers blaming, services inside vpls, vpls 
getting loss bla bla bla....

Degraded fibers keep flapping lights on/off less than 30/90 seconds, no iBGP 
alarms. No one knows what’s going on...

As I said: VPLS save me from the dark(another Operation History: Once Upon 
time: we used Portugal Telecom IP/MPLS solution), Now L2circuits now 
enlightened my days. I can sleep!

By the way, I still using VPLS/iBGP for point multipoint services.  

att
Alexandre

Em 7 de jul de 2018, à(s) 17:16, Mark Tinka <[email protected]> escreveu:

> 
> 
> On 7/Jul/18 18:03, Alexandre Guimaraes wrote:
> 
>> Yes! But... Ex4550 we have 32 ports 1/10Gb, using expansion slots, more 
>> 1/10Gb or 40Gb ports.  L2circuits, QinQ L2TP, vlan translation, rtg 
>> local-interface switching and so on...
>> 
>> We eat 1/10Gb ports, ASR920 didn’t help us with that.
> 
> Agreed - the ASR920 lacks port density. But, it does have the features, which 
> come at a decent price.
> 
> Depending on how things pan out with Broadcom in the few short years to come, 
> I think this will be a particularly good area for Arista to pick all their 
> competitors off, should they come right with their IP/MPLS software 
> implementations.
> 
> I feel the established/traditional equipment vendors are too busy producing 
> half-baked Broadcom-based solutions just to have a "cheap" option to deal 
> with customers considering Arista or white boxes; and focusing more on 
> pushing their heavily-bloated "data centre" switches at massive $$ premiums. 
> Slowly but surely, Arista (or anyone else copying their model) will rise to 
> fill the gap.
> 
> Mark.
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