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[MX150] IFD (xe-0/0/10, xe-0/0/11) status is Up without fibers if SFP+(10G) is inserted in sfp-0/0/10 or sfp-0/0/11

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Article ID: KB34580 KB Last Updated: 21 Jun 2019Version: 1.0
Summary:

On MX150 Series routers, IFD (xe-0/0/10, xe-0/0/11) status is Up without any fibers if an SFP+(10G) is inserted in sfp-0/0/10 (Xcvr 10) or sfp-0/0/11(Xcvr 11). This unexpected behavior is seen if an SFP+(10G) is wrongly installed in Xcv 10 or Xcv 11 under FPC 0.

This article describes the correct way to install the hardware and avoid such behavior.

 

Symptoms:

The issue is demonstrated as follows:

User@MX150> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                EB0518AF0035      MX150
Midplane         REV 04   650-080658   EB0518AF0035      MX150
Power Supply 0
Routing Engine 0                                         RE-VMX
  vtbd0     0 MB                                         Hard Disk
CB 0                                                     VMX SCB
FPC 0                                                    Virtual FPC
  CPU            Rev. 1.0 RIOT-PERF    BUILTIN
  MIC 0                                                  Virtual
    PIC 0                 BUILTIN      BUILTIN           Virtual
      Xcvr 10    REV 01   740-021309   HAJ2000468        SFP+-10G-LR
Fan Tray 0                                               fan-ctrl-0 0, Front to Back Airflow - AFO
Fan Tray 1                                               fan-ctrl-0 1, Front to Bac
k Airflow - AFO


*** messages ***
May 21 13:20:45  MX150 fpc0 sfp-0/0/10 SFP plugged in
May 21 13:20:46  MX150 fpc0 cos-halp: setup ifd:158, pfe-id 0, direction:egress, queue capable:no, ingress queue capable:no
May 21 13:20:46  MX150 fpc0 DCBCM: Attaching ifd xe-0/0/10
May 21 13:20:46  MX150 fpc0 dcbcm_tvp_flexport_setup Unable to get Port ctrllanes for port 12 rv=-16
May 21 13:20:46  MX150 fpc0 dcbcm_tvp_flexport_change: Failed to setup flex mode for port=12 mode=1
May 21 13:20:46  MX150 fpc0 : dcbcm_init_port_common: Speed Set failed for port 12 ret=-15
May 21 13:20:46  MX150 fpc0 PORTDEV: DEVINIT for PIC: 0 PORT: 10
May 21 13:20:46  MX150 fpc0 : port command handler failed processing cmd 1 for port 12
May 21 13:20:46  MX150 fpc0 eth_ifd_bind: failed for (xe-0/0/10)....
May 21 13:20:46  MX150 fpc0 DCBCM(0/0): eth_ifd_bind failed for xe-0/0/10
May 21 13:20:46  MX150 fpc0 DCBCM(0/0): eth attach for xe-0/0/10 failed
May 21 13:20:46  MX150 rpd[6265]: STP handler: IFD=xe-0/0/10, op=add, state=Discarding, Topo change generation=0
May 21 13:20:46  MX150 rpd[6265]: *STP Add*, notify to other modules
May 21 13:20:46  MX150 rpd[6265]: EVENT <Add Bandwidth MTU Encapsulation ESI Options Change> xe-0/0/10 index 158 <Broadcast Multicast> address #0 7c.25.86.d6.65.6e
May 21 13:20:46  MX150 mib2d[6131]: getEvents: Event ifd-admin not subscribed
May 21 13:20:46  MX150 mib2d[6131]: No event subscription for ifd-admin
May 21 13:20:47  MX150 rpd[6265]: EVENT <UpDown> xe-0/0/10 index 158 <Up Broadcast Multicast> address #0 7c.25.86.d6.65.6e
May 21 13:20:47  MX150 rpd[6265]: STP handler: IFD=xe-0/0/10, op=change, state=Forwarding, Topo change generation=0
May 21 13:20:47  MX150 rpd[6265]: *STP Change*, notify to other modules
May 21 13:20:47  MX150 mib2d[6131]: SNMP_TRAP_LINK_UP: ifIndex 561, ifAdminStatus up(1), ifOperStatus up(1), ifName xe-0/0/10
 
Physical interface: xe-0/0/10, Enabled, Physical link is Up
  Interface index: 158, SNMP ifIndex: 561, Generation: 183
  Link-level type: Ethernet, MTU: 1514, MRU: 1522, LAN-PHY mode, Speed: 10Gbps, Duplex: Full-Duplex, BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled
  Pad to minimum frame size: Disabled
  Device flags   : Present Running
  Interface flags: SNMP-Traps Internal: 0x4000
  Link flags     : None
  CoS queues     : 8 supported, 8 maximum usable queues
  Hold-times     : Up 0 ms, Down 0 ms
  Damping        : half-life: 0 sec, max-suppress: 0 sec, reuse: 0, suppress: 0, state: unsuppressed
  Current address: 7c:25:86:d6:65:6e, Hardware address: 7c:25:86:d6:65:6e
  Last flapped   : 2019-05-21 13:20:47 JST (00:05:27 ago)
 

 

Cause:

This unexpected behavior is seen if an SFP+(10G) is wrongly installed in Xcv 10 or Xcv 11 under FPC 0.

Refer to "Figure 2: MX150 Front Panel Components" on page 19 of MX150 Universal Routing Platform Hardware Guide.

  • Xcvr 10 and Xcvr 11 support only SFP(1G).

  • Xcvr 12 and Xcvr 13 support SFP(1G) and SFP+(10G).

 

Solution:

To avoid unexpected behavior as indicated above, install the hardware correctly as shown:

User@mx150> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                EB4817AF0047      MX150
Midplane         REV 01   650-080658   EB4817AF0047      MX150
Power Supply 0
Routing Engine 0                                         RE-VMX
CB 0                                                     VMX SCB
FPC 0                                                    Virtual FPC
CPU              Rev. 1.0 RIOT-PERF    BUILTIN
MIC 0                                                    Virtual
PIC 0                     BUILTIN      BUILTIN           Virtual
Xcvr 10          REV 01   740-011614   C08C07847         SFP-LX10
Xcvr 11          REV 01   740-011614   C10C08029         SFP-LX10
Xcvr 12          REV 01   740-021308   AP31CD1           SFP+-10G-SR
Xcvr 13          REV 01   740-031980   AA15073MMN8       SFP+-10G-SR
Fan Tray 0                                               fan-ctrl-0 0, Front to Back Airflow - AFO
Fan Tray 1                                               fan-ctrl-0 1, Front to Back Airflow - AFO

 

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