[j-nsp] LACP on mixed virtual chassis QFX5100/EX4300

[ThienDuc Nguyen]

Hi,
On Wed, Nov 4, 2015 at 7:28 PM, Tobias Heister <lists at tobias-heister.de>
wrote:

> Hi,
>
> Am 03.11.2015 um 23:23 schrieb ThienDuc Nguyen:
>
>> I was trying to create a LACP bundle between two ports : one on a EX4300,
>> the other on a QFX5100.
>> Both link have their speed negotiated at 1GE (but the interface name on
>> the
>> QFX is xe-, I can't force it to ge-, and their are no way to force the
>> speed on the QFX).
>> if I set the lacp speed to 1ge, the configuration can't commit because it
>> sees the QFX interface as a 10G interface...
>>
>>
>> Is their a special knob to activate it, or I need to create LACP on the
>> same device family ?  (the version is  14.1X53-D30.3)
>>
>
> From what you wrote i would suspect that you use a QFX5100 copper version?
> If they behave anything like the EX45XX Copper Versions the interfaces
> will always be xe- regardless of them being only used with 1GE neighbors.
> Would be funny if the interface name would change when lower speeds are
> negotiated.
>

Yes, it's the 48T version. When I rename it to ge-, the xe- interface is
still here, and yes it would be funny ;-)
Note that this version is 3 rate (100m, 1g, 10g).


> Probably the config parser checks the physical interfaces and finds out
> that it is a 10G interface on QFX and 1G Interface on EX and will not
> commit as mixed speed AEs are only supported in later MX code.
>
> I do not know a way around that and do not have copper QFX at hand to
> check. Probably you will have hit one of these corner case situations that
> nobody thought about and nobody ever encountered and nobody ever asked
> about (at least if you ask jtac :))


Thanks a lot, I think next step will be jtac and new code.

Thien Duc