Troubleshooting the Switching Planes in the Routing Matrix

Problem

• The LINK LED and RxPWR LED for a fiber-optic array port are both lit green.
• The output for the show chassis fabric plane extensive command shows that the state of the optical switch fabric links are Links ok.
• The output for the show chassis fabric topology command shows that the state of the electrical switch fabric links are OK.

• The LINK LED for a fiber-optic array port is not lit, blinking yellow, steadily yellow, or steadily red.
• The RxPWR LED for a fiber-optic array port is not lit or yellow.
• The output for the show chassis fabric plane extensive command shows that the state of any optical switch fabric link is not Links ok.
• The output for the show chassis fabric topology command shows that the state of any electrical switch fabric link is not OK.

Solution

1. Check the LEDs:
   • LINK LED for a fiber-optic array port is blinking yellow—Verify that the same label is attached to both sides of the fiber-optic array cable and that the cable is connected to the correct ports. The fiber-optic array cable is connected to either the wrong TXP-T1600 SIB port or wrong TXP-F13 SIB port.
   • LINK LED for a fiber-optic array port is lit red—Use the CLI to check the status of the TXP-F13 SIB. The link either has detected errors or is not functioning normally.
   • RxPWR LED for a fiber-optic array port is lit yellow—We recommend that you clean the corresponding TXP-F13 SIB and TXP-T1600 SIB fiber-optic array ports and the fiber-optic array cable connectors.
2. show chassis fabric plane extensive command indicates that the state of any optical link is not OK—We recommend that you clean the corresponding TXP-F13 SIB and TXP-T1600 SIB fiber-optic array ports and the fiber-optic array cables.
   user@host> show chassis fabric plane extensive

   sfc0-re0:
   --------------------------------------------------------------------------
   Fabric Management PLANE State:
   PLANE 0:    Spare            
      ABS-SIB-F13        0   :    Spare           
      ABS-SIB-F13        1   :    Spare           
      ABS-SIB-F2         0/0 :    Spare           
      ABS-SIB-F2         0/2 :    Spare           
      ABS-SIB-F2         0/4 :    Spare           
      ABS-SIB-F2         0/6 :    Spare           
      ABS-SIB-F13  0 Even:
           LCC 0, ST-SIB-L 0 : Links ok 
               SG 0
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 1
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 2
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 3
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
      ABS-SIB-F13  0 Odd:
           LCC 1, ST-SIB-L 0 : Links ok 
               SG 0
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 1
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 2
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 3
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
           ABS-SIB-F2 0/0: Links ok
           ABS-SIB-F2 0/2: Links ok
           ABS-SIB-F2 0/4: Links ok
           ABS-SIB-F2 0/6: Links ok
      ABS-SIB-F13  1 Even:
           LCC 2, ST-SIB-L 0 : Links ok 
               SG 0
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 1
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 2
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 3
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
      ABS-SIB-F13  1 Odd:
           LCC 3, ST-SIB-L 0 : Links ok 
               SG 0
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 1
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 2
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 3
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
           ABS-SIB-F2 0/0: Links ok
           ABS-SIB-F2 0/2: Links ok
           ABS-SIB-F2 0/4: Links ok
           ABS-SIB-F2 0/6: Links ok
   PLANE 1:    Online           
      ABS-SIB-F13        3   :    Online          
      ABS-SIB-F13        4   :    Online          
      ABS-SIB-F2         1/0 :    Online          
      ABS-SIB-F2         1/2 :    Online          
      ABS-SIB-F2         1/4 :    Online          
      ABS-SIB-F2         1/6 :    Online          
      ABS-SIB-F13  3 Even:
           LCC 0, ST-SIB-L 1 : Links ok 
               SG 0
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 1
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 2
                   Port 0    : Links ok
                   Port 1    : Links ok
                   Port 2    : Links ok
                   Port 3    : Links ok
               SG 3
                   Port 0    : Links ok
   ...

3. Display the system log messages to obtain information about link failures. The /var/log/messages file is a commonly configured destination for system log messages. To display it, issue the show log command. For example:
   user@host> show log messages

   For more information about system log messages, see the Junos OS System Log Messages Reference .

   Your customer support representative can assist you with using the information in the system log, along with the supplied fiber-optic array loopback connector and adapter, to determine if you have a faulty TXP-F13 SIB, TXP-T1600 SIB, or fiber-optic array cable.

   Caution: Do not connect and disconnect a fiber-optic array cable connector, a loopback connector, or a loopback adapter more frequently than required to perform the procedures in this hardware guide. These fiber-optic components are rated for a limited number of insertions (approximately 100).