[j-nsp] Junos upgrade 7.0R2.7->7.3R2.9 on M5 and a problem with auto negotiation on 12xFE pic

[David Williamson]

See PR #64425.  This is a bug.  Note that only the 12-port FE PIC seems
to have a problem, and the 4-port FE PIC works just fine.

This bug is one that I find a bit surprising...you would think something
like this would have been caught before release!

-David

On Mon, Nov 07, 2005 at 04:21:59PM +0000, dmitri at nominet.org.uk wrote:
> I agree. But if the Junos behaviour changed I think it should have been 
> mentioned in Release Notes.
> 
> Regards
> Dmitri
> 
> "Richmond, Jeff \(ELI\)" <jeff_richmond at eli.net> wrote on 07/11/2005 
> 15:42:29:
> 
> > Not sure if it is a bug or not, but setting fixed on one side and 
> > auto on the other is never a good idea. I know it is convenient, but
> > more often than not, you'll find that it causes more problems than 
> > it solves, unfortunately.
> > 
> > Good luck,
> > -Jeff
> > 
> > -----Original Message-----
> > From: juniper-nsp-bounces at puck.nether.net
> > [mailto:juniper-nsp-bounces at puck.nether.net]On Behalf Of
> > dmitri at nominet.org.uk
> > Sent: Monday, November 07, 2005 6:58 AM
> > To: juniper-nsp at puck.nether.net
> > Subject: [j-nsp] Junos upgrade 7.0R2.7->7.3R2.9 on M5 and a problem with
> > auto negotiation on 12xFE pic
> > 
> > 
> > Hi,
> > 
> > I just tried to upgrade Junos on M5 from 7.0R2.7 to 7.3R2.9 and 
> > encountered a problem. We have some devices connected to 12xFE pic which 
> 
> > only can do 10M half-duplex. With any Junos up to 7.0 we hadn't had any 
> > problems with them and M5 always auto-negotiated half-dulex and 10M. 
> Now, 
> > after upgrading to 7.3R2.9, phisical links with these devices stay down 
> > unless I explicitly set the interfaces on M5 to 10M and half-duplex. I 
> > haven't found anything about it in Release Notes.
> > Has anyone encountered it? Is it a bug? Below is our hardware 
> > configuration.
> > 
> > Thanks
> > Dmitri
> > 
> > show chassis hardware
> > Hardware inventory:
> > Item             Version  Part number  Serial number     Description
> > Chassis                                50434             M5
> > Midplane         REV 03   710-002650   HF1461            M5 Backplane
> > Power Supply A   Rev 04   740-002497   LK23061           AC Power Supply
> > Power Supply B   Rev 04   740-002497   LK23063           AC Power Supply
> > Display          REV 04   710-001995   HF1167            M10 Display 
> Board
> > Routing Engine   REV 06   740-003239   9000006978        RE-2.0
> > FEB              REV 09   710-002503   HF1641            Internet 
> > Processor IIv1
> > FPC 0                                                    FPC
> >   PIC 1          REV 04   750-004176   AV1687            12x FE, 100 
> > BASE-TX
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