I dont understand the purpose of MPLS
hitmen
Banned Posts: 133
I understand that the aim is to go from one PE to another PE.
However, I dont understand why traffic has to go through P routers.
What I mean is: Why cant the two PE routers be directly connected through wavelength multiplexing?
In my ISP I have two service provider edge routers (let's call it A and
.
I also have two retail provider edge routers (let's call it C and D).
There are virtual forwarding instances between A to C, A to D but NOT A to B.
Can anyone explain to me what could be a possible reason?
Thanks.
However, I dont understand why traffic has to go through P routers.
What I mean is: Why cant the two PE routers be directly connected through wavelength multiplexing?
In my ISP I have two service provider edge routers (let's call it A and
.I also have two retail provider edge routers (let's call it C and D).
There are virtual forwarding instances between A to C, A to D but NOT A to B.
Can anyone explain to me what could be a possible reason?
Thanks.
Comments
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srg
Member Posts: 140
Theres nothing that dictates you _MUST_ have P routers, if you want to connect PE routers back to back you're totally free to do so. Though physically meshing all your PE routers won't scale for long.