[j-nsp] Interfaces with copper SFPs not getting torn down when partner is disabled (not correctly recognizing Media type?)

[Jason Lixfeld]

Hi Graham,

These are 3rd party.  I was told that by my SE that the platform fully supports 3rd party optics... not that that really means anything :)

> On Jul 18, 2016, at 4:38 PM, Graham Brown <juniper-nsp at grahambrown.info> wrote:
> 
> Hi Jason,
> 
> Are these SFPs Juniper supplied or third party? Over the years there have been many documented issues with Base-T SFPs, where you lose physical and they report as being up.
> 
> IIRC, the Juniper supplied SFPs are ok and I have tested third party ones that do work, but it's a little hit and miss.
> 
> NB: I have not tested the EX9200.
> 
> HTH,
> Graham
> 
> Graham Brown
> Twitter - @mountainrescuer
> LinkedIn
> 
> On 19 July 2016 at 08:04, Jason Lixfeld <jason-jnsp at lixfeld.ca> wrote:
> Hey there,
> 
> I’m messing around with a lab EX9204 with a EX9200-40x1G-SFP running 14.2R4.9
> 
> I’ve got two ports (on the same box) connected together with 10/100/1000T SFPs in each.
> 
> ario at lab01.juniper# show interfaces | display set
> set interfaces ge-0/1/0 unit 0
> set interfaces ge-0/3/0 unit 0
> 
> ario at lab01.juniper# run show lldp neighbors
> Local Interface    Parent Interface    Chassis Id          Port info          System Name
> ge-0/1/0           -                   30:7c:5e:96:ac:80   ge-0/3/0           lab01.juniper
> ge-0/3/0           -                   30:7c:5e:96:ac:80   ge-0/1/0           lab01.juniper
> 
> [edit]
> ario at lab01.juniper#
> 
> I’m noticing that if I disable either interface, it’s partner interface does not go down.  I’m not talking about Ethernet OAM, just simple layer 1 link detection with copper SFPs.  In my past experiences with various Cisco platforms, this works with no special configuration required.  One thing of interest is that the box thinks the media type is Fiber.
> 
> ario at lab01.juniper# set interfaces ge-0/1/0 disable
> 
> [edit]
> ario at lab01.juniper# commit
> commit complete
> 
> [edit]
> ario at lab01.juniper# Jul 18 15:56:42.333 2016  lab01.juniper mib2d[2006]: %DAEMON-4-SNMP_TRAP_LINK_DOWN: ifIndex 558, ifAdminStatus down(2), ifOperStatus down(2), ifName ge-0/1/0
> 
> 
> [edit]
> ario at lab01.juniper# run show interfaces ge-0/1/0
> Physical interface: ge-0/1/0, Administratively down, Physical link is Down
>   Interface index: 149, SNMP ifIndex: 558
>   Link-level type: Ethernet, MTU: 1514, MRU: 0, LAN-PHY mode, Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled,
>   Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online, Media type: Fiber
>   Device flags   : Present Running Down
>   Interface flags: Hardware-Down Down SNMP-Traps Internal: 0x4000
>   Link flags     : None
>   CoS queues     : 8 supported, 8 maximum usable queues
>   Current address: 30:7c:5e:96:a5:65, Hardware address: 30:7c:5e:96:a5:65
>   Last flapped   : 2016-07-18 15:56:42 EDT (00:00:11 ago)
>   Input rate     : 0 bps (0 pps)
>   Output rate    : 0 bps (0 pps)
>   Active alarms  : LINK
>   Active defects : LINK
>   Interface transmit statistics: Disabled
> 
>   Logical interface ge-0/1/0.0 (Index 345) (SNMP ifIndex 570)
>     Flags: Device-Down SNMP-Traps 0x4004000 Encapsulation: ENET2
>     Input packets : 3
>     Output packets: 4
>     Protocol multiservice, MTU: Unlimited
> 
> [edit]
> ario at lab01.juniper# run show interfaces ge-0/3/0
> Physical interface: ge-0/3/0, Enabled, Physical link is Up
>   Interface index: 169, SNMP ifIndex: 526
>   Link-level type: Ethernet, MTU: 1514, MRU: 0, LAN-PHY mode, Speed: 1000mbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled,
>   Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online, Media type: Fiber
>   Device flags   : Present Running
>   Interface flags: SNMP-Traps Internal: 0x4000
>   Link flags     : None
>   CoS queues     : 8 supported, 8 maximum usable queues
>   Current address: 30:7c:5e:96:a6:af, Hardware address: 30:7c:5e:96:a6:af
>   Last flapped   : 2016-07-18 14:52:35 EDT (01:04:23 ago)
>   Input rate     : 0 bps (0 pps)
>   Output rate    : 0 bps (0 pps)
>   Active alarms  : None
>   Active defects : None
>   Interface transmit statistics: Disabled
> 
>   Logical interface ge-0/3/0.0 (Index 348) (SNMP ifIndex 544)
>     Flags: Up SNMP-Traps 0x4004000 Encapsulation: ENET2
>     Input packets : 4
>     Output packets: 4
>     Protocol multiservice, MTU: Unlimited
> 
> [edit]
> ario at lab01.juniper#
> 
> Am I missing something somewhere?
> 
> Thanks in advance.
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