Juniper MX204 allow oversubscription?

Mon May 16 17:50:11 UTC 2022

If additional ports are more important than the full 100G throughput, you can configure it as 2x100+2x40+8x10.

We tend to break out 10G ports on switches, so we can more fully utilize the 100G ports.

My hope for a successor (MX205 ?) would be more flexibility and 25G ports. 4x100G+8x25G would be awesome.

thanks,
-Randy

--
Randy Carpenter
Vice President - IT Services
First Network Group, Inc.
(800)578-6381, Opt. 1
http://www.network1.net

----- On May 16, 2022, at 1:10 PM, Kevin Shymkiw kshymkiw at gmail.com wrote:

> 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 |
> 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 < [ mailto:athompson at merlin.mb.ca
> | 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

>> 100 - 135 Innovation Drive

>> Winnipeg, MB R3T 6A8

>> (204) 977-6824 or 1-800-430-6404 (MB only)

>> [ https://www.merlin.mb.ca/ | https://www.merlin.mb.ca ]

>> [ https://teams.microsoft.com/l/chat/0/[email protected] | Chat
>>  with me on Teams ]