Juniper MX204 allow oversubscription?

Mon May 16 17:10:07 UTC 2022

Adam,

Simply put - No there isn't a way to oversubscribe the front panel.

Juniper has a handy tool to check your port combinations though -
https://apps.juniper.net/home/port-checker/index.html

The lack of being able to oversubscribe has to do with # of lanes to the EA
ASIC, and how those can be broken down.

Kevin

On Mon, May 16, 2022 at 11:04 AM Adam Thompson <athompson at merlin.mb.ca>
wrote:

> Hi all,
>
> Hoping some Juniper-using folks know:
>
> On the MX204, which comes with 4x100G + 8x10G ports, you can only use 3 of
> the 4 100G ports if you want to use any of the 10G ports at all.
>
> Supposedly this is to prevent oversubscription on what is a 400G-rated
> router.  However, I’m perfectly fine with oversubscription with a 400G
> aggregate throughput cap.
>
> Is there a way to stop the automatic “oh, I’ll disable these other ports
> for you so you don’t oversubscribe the box” behaviour and let all the
> front-panel ports be used at once?
>
> -Adam
>
>
>
> *Adam Thompson*
>
> Consultant, Infrastructure Services
>
> [image: MERLIN]
>
> 100 - 135 Innovation Drive
>
> Winnipeg, MB R3T 6A8
>
> (204) 977-6824 or 1-800-430-6404 (MB only)
>
> https://www.merlin.mb.ca
>
> Chat with me on Teams
> <https://teams.microsoft.com/l/chat/0/[email protected]>
>
>
>
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