[j-nsp] MX routers and DAC cables?

[David Miller]

Juniper's official Hardware Compatibility Guide lists 100G DACs as
officially supported on MX10003, so "no DACs" being officially
supported is not true.
https://apps.juniper.net/hct/product/#prd=MX10003

We have used DAC cables (10G, 40G, & 40G -> 4x10G) with MX204s up to
18.4R3.  I have also labbed up 40G DACs with EX4300s (for VC and
uplink to MX) with no issues.

-- 
______________________
David Miller
dmiller at tiggee.com

On Fri, Jun 12, 2020 at 2:41 PM Chris Adams <cma at cmadams.net> wrote:
>
> Is anybody using DAC cables on MX routers?  We have a customer with an
> MX10003 connected to EX4600 switches with 40G DAC cables (Juniper parts,
> not third-party).  Upon upgrading the router JUNOS to 18.2R3-S3, none of
> the interfaces with a DAC cable would come up on the router end.
>
> JTAC's response was that no DAC cables are supported on any MX routers.
>
> That seems a little odd to me... I thought DAC cables are a part of the
> various specs, so saying they're not supported is saying those aren't
> actually Ethernet ports to me.
>
> --
> Chris Adams <cma at cmadams.net>
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