[j-nsp] MX304 Port Layout

[Saku Ytti]

On Tue, 27 Jun 2023 at 19:47, Tarko Tikan via juniper-nsp
<juniper-nsp at puck.nether.net> wrote:


> Single NPU doesn't mean non-redundant - those devices run two (or 4 in
> ACX case) BCM NPUs and switch "linecards" over to backup NPU when
> required. All without true fabric and distributed NPUs to keep the cost
> down.

This of course makes it more redundant than distributed box, because
distributed boxes don't have NPU redundancy.

Somewhat analogous how RR makes your network more redundant than
full-mesh. Because in full-mesh every iBGP flap is out of order,
whereas in RR a single iBGP flap has no impact. Of course parallel
continues to scope of outage, in full-mesh losing single iBGP isn't a
big outage, in RR it's binary, either nothing is broken or all is.


-- 
  ++ytti