[j-nsp] Link establishment issues with 1Gbps SX/LX SFPs on QFX5110

[Colton Conor]

Do you know when this will be fixed in the mainline releases? I have no
clue what  3.5R1-S4.1 is?

On Fri, Jun 28, 2019 at 2:22 PM Timothy Creswick <timothy at creswick.eu>
wrote:

> For anyone interested in this, JTAC released to us 3.5R1-S4.1 for the
> satellite devices (I don't believe this will be generally available until
> tomorrow). This addresses the issue and confirms that there were 2 or 3
> different PRs relating to the Broadcom chipset being incorrectly programmed
> by Junos.
>
> Some output, testing with a variety of 1Gbps optics (coded SX, LX, uncoded
> BX, LX and SX).
>
> > show chassis hardware satellite
> Hardware inventory:
> Item             Version  Part number  Serial number     Description
> FPC 100          REV 27   650-061152   WS37183----X      QFX5110-48S-4C
>   PIC 0          REV 27   650-061152   WS37183----X      48x10G-4x100G
>     Xcvr 0       850nm    740-011782   F----------X      SFP-SX
>     Xcvr 2       1310nm   740-011783   F----------X      SFP-LX10
>     Xcvr 4                NON-JNPR     VS51208----X
> SFP-1000BASE-BX10-D
>     Xcvr 6                NON-JNPR     VS60930----X      SFP-LX10
>     Xcvr 8                NON-JNPR     VS50930----X      SFP-SX
>
> > show interfaces ge-100/0/[02468] terse
> Interface               Admin Link Proto    Local                 Remote
> ge-100/0/0              up    up
> ge-100/0/2              up    up
> ge-100/0/4              up    up
> ge-100/0/6              up    up
> ge-100/0/8              up    up
>
> > show configuration interfaces
> ge-100/0/0 {
>     unit 0;
> }
> ge-100/0/2 {
>     unit 0;
> }
> ge-100/0/4 {
>     unit 0;
> }
> ge-100/0/6 {
>     unit 0;
> }
> ge-100/0/8 {
>     unit 0;
> }
>
> # bcmshell ps 1,3,5,7,9
>
> HW (unit 0)
>                  ena/    speed/ link auto    STP                  lrn
> inter   max  loop
>            port  link    duplex scan neg?   state   pause  discrd ops
>  face frame  back
>        ge0(  1)  up      1G  FD   HW  Yes  Forward          None    F
>  GMII  1518
>        ge1(  3)  up      1G  FD   HW  Yes  Forward          None    F
>  GMII  1518
>        ge2(  5)  up      1G  FD   HW  Yes  Forward          None    F
>  GMII  1518
>        ge3(  7)  up      1G  FD   HW  Yes  Forward          None    F
>  GMII  1518
>        ge4(  9)  up      1G  FD   HW  Yes  Forward          None    F
>  GMII  1518
>
> We note that now changing the auto-negotiate state in Junos correctly
> updates the underlying chipset and link negotiation works correctly.
> Interface is shown as GMII which we understand to be correct also.
>
> All-in, pretty terrible that - as far as we can tell - 1Gbps ports have
> *never worked* on QFX5110 properly in all the four basic combinations (i.e.
> SX and LX at both auto- and no-auto negotiation) until this release. Quite
> how Juniper have been shipping the hardware for so long in that state is a
> mystery to me.
>
>
> Tim
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