[j-nsp] MX routers and DAC cables?

[Emille Blanc]

Though not had any experience with MX's, we were never successful in getting DAC's to work with our EX's.
Had to go for optics.
We learned to just not bother with DAC's in future due to off-list anecdotes of such behavior - not just with Juniper (HPE, Cisco...)

-----Original Message-----
From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Chris Adams
Sent: Friday, June 12, 2020 11:39 AM
To: juniper-nsp at puck.nether.net
Subject: [j-nsp] MX routers and DAC cables?

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>
_______________________________________________
juniper-nsp mailing list juniper-nsp at puck.nether.net
https://puck.nether.net/mailman/listinfo/juniper-nsp