[c-nsp] Acceptable port configurations for ASR 9902 (gripe)

[Drew Weaver]

I know it is not the same but if it can do 1x100GE,1x100GE,1x100GE,1x100GE it would sort of follow that it can do 1x100GE,1x100GE,1x100GE,10x10GE

I can't really imagine a way that the underlying line card could be attached to the 'switch' whereby it wouldn't allow this given what it already does allow.

If the slices didn’t have the possibility of failing independently of one another this would matter slightly less as one could configure slice0 as 1x100GE x4 and slice1 as 2x100GE +10x10+10x10 but since the slices can indeed fail independently it seems like a good idea to port-channel one port from each slice for each 'service'.

That is just my opinion though. 

Thanks,
-Drew




-----Original Message-----
From: Nick Hilliard <nick at foobar.org> 
Sent: Wednesday, January 31, 2024 9:06 AM
To: Drew Weaver <drew.weaver at thenap.com>
Cc: 'cisco-nsp at puck.nether.net' <cisco-nsp at puck.nether.net>
Subject: Re: [c-nsp] Acceptable port configurations for ASR 9902 (gripe)

Drew Weaver via cisco-nsp wrote on 31/01/2024 14:00:
> So having a 1x100GE,1x100GE,4x25GE,10x10GE option and not a 
> 1x100GE,1x100GE,1x100GE,10x10GE option is just... laziness I guess is 
> how I would describe it.
4x25G is not the same as 1x100G - sounds like there's some weird gearbox stuff going on under the surface.  It would be interesting to see a technical description of why this restriction exists.

Nick