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New Member

Link stay down in a 3850 withe the Modul c3850-NM-4-10G and the 1000BaseZX SFP

Hi together,

i have trouble withe a 3850 withe the Modul c3850-NM-4-10G and the 1000BaseZX SFP. The Link stay down in the Switch. But thats not all. The SFP is working in an other Switch (3650) very well. The Port is also identified by the Switch. The transceiver detail looking also good. So i have no idea any more. Maybe you can give me some advices for troubleshooting or (that would be great yeeaahhh) a solution.

Thank you

Edvard Franke

 

and here are the details about the 3850 Switch

------------------ show running-config ------------------

interface TenGigabitEthernet1/1/4
 description
 switchport access vlan 68
 switchport mode access
 speed nonegotiate

 

------------------ show interfaces ------------------

TenGigabitEthernet1/1/4 is down, line protocol is down (notconnect)
  Hardware is Ten Gigabit Ethernet, address is 1c1d.8695.1f38 (bia 1c1d.8695.1f38)
  Description:
  MTU 9198 bytes, BW 10000000 Kbit/sec, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive not set
  Auto-duplex, Auto-speed, link type is force-up, media type is 1000BaseZX SFP
  input flow-control is off, output flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts (0 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 watchdog, 0 multicast, 0 pause input
     0 input packets with dribble condition detected
     0 packets output, 0 bytes, 0 underruns
     0 output errors, 0 collisions, 5 interface resets
     0 unknown protocol drops
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier, 0 pause output
     0 output buffer failures, 0 output buffers swapped out

 

3850#show interfaces tenGigabitEthernet 1/1/4 transceiver detail
ITU Channel not available (Wavelength not available),
Transceiver is internally calibrated.
mA: milliamperes, dBm: decibels (milliwatts), NA or N/A: not applicable.
++ : high alarm, +  : high warning, -  : low warning, -- : low alarm.
A2D readouts (if they differ), are reported in parentheses.
The threshold values are calibrated.

                              High Alarm  High Warn  Low Warn   Low Alarm
          Temperature         Threshold   Threshold  Threshold  Threshold
Port       (Celsius)          (Celsius)   (Celsius)  (Celsius)  (Celsius)
--------- ------------------  ----------  ---------  ---------  ---------
Te1/1/4     32.1                90.0        85.0        -5.0      -10.0

                              High Alarm  High Warn  Low Warn   Low Alarm
           Voltage            Threshold   Threshold  Threshold  Threshold
Port       (Volts)            (Volts)     (Volts)    (Volts)    (Volts)
---------  ---------------    ----------  ---------  ---------  ---------
Te1/1/4    3.28                  3.63        3.47        3.14       2.97

           Optical            High Alarm  High Warn  Low Warn   Low Alarm
           Transmit Power     Threshold   Threshold  Threshold  Threshold
Port       (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
---------  -----------------  ----------  ---------  ---------  ---------
Te1/1/4      2.5                 7.9         4.9         0.0       -4.0

           Optical            High Alarm  High Warn  Low Warn   Low Alarm
           Receive Power      Threshold   Threshold  Threshold  Threshold
Port       (dBm)              (dBm)       (dBm)      (dBm)      (dBm)
-------    -----------------  ----------  ---------  ---------  ---------
Te1/1/4    -17.2                 0.0        -2.9       -23.0      -26.9

 

------------------ show controllers ------------------


Transmit                  TenGigabitEthernet1/1/4         Receive                 
            0 Total bytes                              0 Total bytes              
            0 Unicast frames                           0 Unicast frames           
            0 Unicast bytes                            0 Unicast bytes            
            0 Multicast frames                         0 Multicast frames         
            0 Multicast bytes                          0 Multicast bytes          
            0 Broadcast frames                         0 Broadcast frames         
            0 Broadcast bytes                          0 Broadcast bytes          
            0 System FCS error frames                  0 IpgViolation frames      
            0 MacUnderrun frames                       0 MacOverrun frames        
            0 Pause frames                             0 Pause frames             
            0 Cos 0 Pause frames                       0 Cos 0 Pause frames       
            0 Cos 1 Pause frames                       0 Cos 1 Pause frames       
            0 Cos 2 Pause frames                       0 Cos 2 Pause frames       
            0 Cos 3 Pause frames                       0 Cos 3 Pause frames       
            0 Cos 4 Pause frames                       0 Cos 4 Pause frames       
            0 Cos 5 Pause frames                       0 Cos 5 Pause frames       
            0 Cos 6 Pause frames                       0 Cos 6 Pause frames       
            0 Cos 7 Pause frames                       0 Cos 7 Pause frames       
            0 Oam frames                               0 OamProcessed frames      
            0 Oam frames                               0 OamDropped frames        
            0 Minimum size frames                      0 Minimum size frames      
            0 65 to 127 byte frames                    0 65 to 127 byte frames    
            0 128 to 255 byte frames                   0 128 to 255 byte frames   
            0 256 to 511 byte frames                   0 256 to 511 byte frames   
            0 512 to 1023 byte frames                  0 512 to 1023 byte frames  
            0 1024 to 1518 byte frames                 0 1024 to 1518 byte frames
            0 1519 to 2047 byte frames                 0 1519 to 2047 byte frames
            0 2048 to 4095 byte frames                 0 2048 to 4095 byte frames
            0 4096 to 8191 byte frames                 0 4096 to 8191 byte frames
            0 8192 to 16383 byte frames                0 8192 to 16383 byte frames
            0 16384 to 32767 byte frame                0 16384 to 32767 byte frame
            0 > 32768 byte frames                      0 > 32768 byte frames      
            0 Late collision frames                    0 SymbolErr frames         
            0 Excess Defer frames                      0 Collision fragments      
            0 Good (1 coll) frames                     0 ValidUnderSize frames    
            0 Good (>1 coll) frames                    0 InvalidOverSize frames   
            0 Deferred frames                          0 ValidOverSize frames     
            0 Gold frames dropped                      0 FcsErr frames            
            0 Gold frames truncated    
            0 Gold frames successful   
            0 1 collision frames       
            0 2 collision frames       
            0 3 collision frames       
            0 4 collision frames       
            0 5 collision frames       
            0 6 collision frames       
            0 7 collision frames       
            0 8 collision frames       
            0 9 collision frames       
            0 10 collision frames      
            0 11 collision frames      
            0 12 collision frames      
            0 13 collision frames      
            0 14 collision frames      
            0 15 collision frames      
            0 Excess collision frames 

 

------------------ show interfaces switchport ------------------

Name: Te1/1/4
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 68 (Level3-Transfer)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

 

------------------ show inventory ------------------

NAME: "Switch 1", DESCR: "WS-C3850-48T"
PID: WS-C3850-48T      , VID: L0   , SN: ----

NAME: "Switch 1 FRU Uplink Module 0", DESCR: "4x10G Uplink Module"
PID: C3850-NM-4-10G    , VID: V01  , SN: ----

NAME: "TenGigabitEthernet1/1/4", DESCR: "1000BaseZX SFP"
PID: GLC-ZX-SMD         , VID: V01  , SN: ----

Everyone's tags (1)
1 ACCEPTED SOLUTION

Accepted Solutions
New Member

We did eventually find the

We did eventually find the issue.  It turned out to be a bug not on our side, but on the Carrier's ME3600X that we were connecting to.   Our 3750X and ASR routers using the same cables, same SFP optic, same XC pair, same everything both connected fine.   Apparently we hit a little known bug on the ME3600X platform.

6 REPLIES
New Member

 i have open a TAC Case for

 i have open a TAC Case for that...

New Member

did you got something?

we got nothing...

New Member

We did eventually find the

We did eventually find the issue.  It turned out to be a bug not on our side, but on the Carrier's ME3600X that we were connecting to.   Our 3750X and ASR routers using the same cables, same SFP optic, same XC pair, same everything both connected fine.   Apparently we hit a little known bug on the ME3600X platform.

New Member

But there is no BugID or?

But there is no BugID or?

New Member

Did you ever get a response

Did you ever get a response to this as I have a friend experiancing the same exact issue. The sfp works in another switch and router but shows down down in the 3850 but up up on the other side.

New Member

Hi, we get no solution for

Hi,

 

we get no solution for this Problem, because we have a workaround and have not enought time for test with the TAC. The TAC has no idea why it haoppend. We will reopen the case, why we get more time for troubleshooting. Please give me your feedback or mybe a solution.

 

thx

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