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Troubleshooting Switching Plane Connections to TX Matrix Plus TXP-F13-3D SIBs

 

Troubleshooting the Switching Planes

Problem:

Description:

  • The LINK LED for a switching plane port is not lit, blinking yellow, steadily yellow, or steadily red.

  • The CBL LED for a switching plane port is not lit or yellow.

  • The output for the show chassis fabric plane extensive and the show chassis fabric fpc commands show the state of the switching planes. The commands provide information about the state, cable errors, link errors and destination errors.

    user@host>show chassis fabric plane
    user@host>show chassis fabric fpc
  • The output for the show chassis fabric topology command shows the state of faulty electrical switch fabric links.

    show chassis fabric topology
  • The output of show chassis sibs command shows that the SIBs have faults.

    user@host>show chassis sibs sfc 0
  • The output of show chassis fabric optics command shows that the optical module or the optical link has fault.

    user@host>show chassis fabric optics

Solution

To troubleshoot the switching planes:

  1. Check the LEDs:
    • LINK LED for a switching plane port is blinking yellow— Verify that the switching plane cable along with the CXP transceiver is connected to the correct ports on both the SFC and the LCC. The switching plane cable is connected to either the wrong TXP-LCC-3D SIB port or the wrong TXP-F13-3D SIB port.

    • LINK LED for a switching plane port is lit red—Use the CLI to check the status of the TXP-F13-3D SIB. The link either has detected errors or is not functioning normally.

    • CBL LED for a switching plane port is lit yellow—We recommend that you clean the corresponding TXP-F13-3D SIB and TXP-LCC-3D SIB CXP ports and the switching plane cables.

  2. The output for the show chassis fabric plane extensive or show chassis fabric fpc command indicates that the state of any optical link is not OK—We recommend that you clean the corresponding TXP-F13-3D SIB and TXP-LCC-3D SIB CXP ports and the cables.
  3. Issue the request chassis sib f2s offline <slot> command to make faulty optical link offline and bring the spare plane online.
  4. Issue the request chassis sib optics sfc 0 sib <f13-sib-slot><optics-num> disable command to bring down the optical link gracefully.
  5. Replace fiber-optic switching plane cable with a new cable. See Replacing a TX Matrix Plus CXP Cable or Replacing a TX Matrix Plus Active Optic Cable with Embedded Transceivers.
  6. Verify if the cable state is shown CABLE_ CONNECTED in the output of the show chassis fabric optics command. When the cable is inserted, links train automatically. Verify if the link trains successfully and marked Up by using the show chassis fabric optical-links command.
  7. If the link on the CXP switching plane cable does not train successfully replace the CXP transceiver one side at a time (on the F13-3D SIB and the LCC-3D SIB) and ascertain if the CXP transceiver has fault. See Replacing a TX Matrix Plus CXP Transceiver. Replacing the CXP transceiver recovers the links.
  8. On the TXP-F13-3D SIB, replace the CXP transceiver with the loopback module on one of the SIBs.
  9. Issue the show chassis fabric optics command to verify that loopback module is detected.
  10. Links retrain automatically. Issue the show chassis fabric topology command to verify the link status.
  11. If the loopback link does not come up on the TXP-F13-3D SIB, replace the SIB. See Replacing a TXP-F13-3D SIB. Verify the links and SIB comes up online using command show chassis fabric topology.
  12. Bring the TXP-F2-3D SIB online to make it the spare plane.
Caution

Do not connect and disconnect a switching plane cable or CXP transceiver, 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).

Table 1: TXP-F13-3D SIB Alarm Messages

Alarm Type

LCD Message

CLI Message

Alarm Condition

Solution

Red

SIB sib-number Failure

SIB sib-number Fault

A TXP-F13-3D SIB on an active switching plane or a TXP-F2 -3D SIB has failed.

Replace the TXP-F13-3D SIB or the TXP-F2-3D SIB .

SIB sib-number Removed

SIB sib-number Absent

A TXP-F13-3D SIB on an active switching plane or a TXP-F2-3D SIB has been removed.

Reinstall the TXP-F13-3D SIB or the TXP-F2 -3D SIB in the chassis.

FAULTY_MODULE

FAULTY_MODULE

Optics module is not working.

Replace the optics module.

CABLE_CONNECTED_W_ERROR

CABLE_CONNECTED_W_ERROR

Cable is dirty or not working.

  1. Clean the switching plane cables and ports on the TXP-F13-3D SIB and TXP-LCC-3D SIB.
  2. Verify that the switching plane cables are connected correctly to the SIBs.
  3. Bring the TXP-F13-3D SIB and TXP-LCC-3D SIB online.
  4. If the link errors is not recovered after cleaning and re-inserting, offline the plane and bring it online and check if link errors is cleared.
  5. If the problem persists, isolate the problem by methodically replacing the each fiber-optic array cable, TXP-F13-3D SIB and TXP-LCC-3D SIB with a spare.
  6. If you are unable to isolate the problem, contact JTAC.

Yellow

Spare SIB Failure

Spare SIB Fault

A TXP-F13-3D SIB on a backup switching plane has failed.

Replace the TXP-F13-3D SIB.

Spare SIB Removed

Spare SIB Absent

A TXP-F13-3D SIB on a backup switching plane has been removed.

Reinstall the TXP-F13-3D SIB.

SIB sib-number config mismatch

SIB sib-number config mismatch

The TXP F13-3D SIB is installed in an unsupported slot.

Remove TXP F13-3D SIB is installed from the unsupported slot, and install in a supported slot.

Check SIB sib-number Fbr Cbl

SIB sib-number Fbr Cbl

Either a switching plane cable is not connected or the switching plane cable is not seated correctly.

Verify that the switching plane cables are connected correctly.

SFC: SIB F2-3Dsib-number CLOS Links SIB F13 sib-number CLOS Links

SFC: SIB F2-3Dsib-number CLOS HSL Link Error SIB F13 sib-number CLOS HSL Link Error

An error has occurred in the link between an F2S-3D SIB and F13-3D SIB.

To isolate the problem:

  1. Replace the TXP-F2-3D SIB with a spare.
  2. If the problem persists, replace the TXP-F13-3D SIB with a spare.
  3. If you are unable to isolate the problem, contact JTAC.

SFC: SIB F13 sib-slot CXP optics-slot XC HSL Link Error

SFC: SIB F13 sib-slot CXP optics-slot XC HSL Link Error

The TXP-F13-3D SIB has detected errors on the optical links to the router line-card chassis (LCC).

  1. Clean the switching plane cables and ports on the TXP-F13-3D SIB and TXP-LCC-3D SIB.
  2. Verify that the switching plane cables are connected correctly to the SIBs.
  3. Bring the TXP-F13-3D SIB and TXP-LCC-3D SIB online.
  4. If the link errors is not recovered after cleaning and re-inserting, offline the plane and bring it online and check if link errors is cleared.
  5. If the problem persists, isolate the problem by methodically replacing the each fiber-optic array cable, TXP-F13-3D SIB and TXP-LCC-3D SIB with a spare.

If you are unable to isolate the problem, contact JTAC.

LCC: LCC SIB sib-slot CXP optics-slot XC HSL Link Error

LCC: LCC SIB sib-slot CXP optics-slot XC HSL Link Error

The TXP-LCC-3D SIB has detected errors on the optical links to the router switch fabric chassis (SFC).

  1. Clean the fiber-optic array cables and ports on the TXP-F13-3D SIB and TXP-LCC-3D SIB.
  2. Verify that the fiber-optic array cables are connected correctly to the SIBs.
  3. Bring the TXP-F13-3D SIB and TXP-LCC-3D SIB online.
  4. If the link errors is not recovered after cleaning and re-inserting, offline the plane and bring it online and check if link errors is cleared.
  5. If the problem persists, isolate the problem by methodically replacing the each fiber-optic array cable, TXP-F13-3D SIB and TXP-LCC-3D SIB with a spare.

If you are unable to isolate the problem, contact JTAC.

Flashing Yellow

CABLE_MIS_CONNECTED

CABLE_MIS_CONNECTED

Software has detected a mis-connection as seen in the show chassis fabric optical-links command output.

Connect the inter-chassis cables correctly to the designated slot.

Dark

MODULE_ABSENT or CABLE_NOT_CONNECTED

MODULE_ABSENT or CABLE_NOT_CONNECTED

No CXP module or MODULE_ABSENT.

CXP module is inserted without the cable or CABLE_NOT_CONNECTED.

Remote end of the cable is not terminated in a CXP module CABLE_NOT_CONNECTED

Verify that the optics module and the cable is connected properly.

If the problem persists replace the cable and then the optics module.

CABLE_NOT_SUPPORTED

Unsupported Optics

Optics module is not supported on this platform.

Replace the existing module with a supported optics module.

Troubleshooting the Line-Card Chassis TXP-LCC-3D SIBs

Problem:

Description:

  • The LINK LED for a switching plane port is not lit, blinking yellow, steadily yellow, or steadily red.

  • The CBL LED for a switching plane port is not lit or yellow.

  • The output of the show chassis environment sib lcc or show chassis sibs lcc <lcc number> shows faults and link errors.

Solution

  1. For TXP-LCC-3D SIBs, the show chassis environment sib lcc command generates the following output:

    user@host> show chassis environment sib lcc
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  3. Remove the dust covers from the optical loopback connector. Temporarily store the dust covers in a dust-free resealable plastic bag.

    Remove the CXP cable and transceiver or AOC transceiver from the TXP-LCC-3D SIB port.

  4. Place dust covers on the AOC transceiver or CXP cable.
  5. Align an optical loopback connector with each TXP-LCC-3D SIB port, and carefully press it into the port until it stops and you hear a click. The optical loopback connector and fiber-optic array switching plane port are keyed to ensure proper mating.
  6. Issue the show chassis fabric optics command to verify that loopback module is detected.
  7. Links retrain automatically. Issue the show chassis fabric topology command to verify the link status.
  8. If the loopback link does not come up on the TXP-LCC-3D SIB, replace the TXP-LCC-3D SIB.

    To replace a TXP-LCC-3D SIB see the T1600 Core Router Hardware Guide or T4000 Core Router Hardware Guide. After replacing the SIB, verify that the links and SIB come online using the show chassis fabric topology command.

Caution

Do not connect and disconnect a switching plane cable or CXP transceiver, 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).

Troubleshooting Active Optic Cable (AOC) Transceivers

Problem:

Description:

The show chassis fabric optics command generates the following output:

user@host>show chassis fabric optics

Solution

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Remove the dust covers from the optical loopback connector. Temporarily store the dust covers in a dust-free resealable plastic bag.
    Figure 1: Optical Loopback with Dust Cover
    Optical Loopback
with Dust Cover
  3. Remove the AOC transceiver from the SIB port.
  4. Place dust covers on the AOC transceiver.
  5. Align an optical loopback connector with each SIB port, and carefully press it into the port until it stops and you hear a click. The optical loopback connector and fiber-optic array switching plane port are keyed to ensure proper mating.
  6. Issue the show chassis fabric optics command to verify that loopback module is detected.
  7. Links retrain automatically. Issue the show chassis fabric topology command to verify the link status.
  8. After you finish testing the SIB port, remove a dust cover from the dust-free resealable plastic bag and reinstall the dust cover on the optical loopback connector. Align the dust cover with the electrical loopback, and carefully press them together until they stop. The dust covers and the loopback connectors are keyed to ensure proper mating. Store the optical loopback connectiors in the dust-free resealable plastic bag.
  9. If the loopback link does not come up on the SIB, replace the Active Optic Cable (AOC) Transceivers. See Replacing a TX Matrix Plus Active Optic Cable with Embedded Transceivers
Caution

Do not connect and disconnect a switching plane cable or CXP transceiver, 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).

Figure 2: Optical Loopback
Optical Loopback

Troubleshooting CXP Transceivers

Problem:

Description:

The show chassis fabric optics command generates the following output:

user@host>show chassis fabric optics

Solution

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to one of the ESD points on the chassis.
  2. Remove the dust covers from the optical loopback connector. Temporarily store the dust covers in a dust-free resealable plastic bag.
  3. Remove the CXP transceiver from the SIB port.
  4. Place dust covers on the CXP transceiver.
  5. Issue the show chassis fabric optics command to verify that loopback module is detected.
  6. Links retrain automatically. Issue the show chassis fabric topology command to verify the link status.
  7. Align an optical loopback connector with each SIB port, and carefully press it into the port until it stops and you hear a click. The optical loopback connector and fiber-optic array switching plane port are keyed to ensure proper mating.
  8. After you finish testing the SIB port, remove a dust cover from the dust-free resealable plastic bag and reinstall the dust cover on the optical loopback connector. Align the dust cover with the electrical loopback, and carefully press them together until they stop. The dust covers and the loopback connectors are keyed to ensure proper mating. Store the optical loopback connectiors in the dust-free resealable plastic bag.
  9. If the loopback link does not come up on the SIB, replace the CXP transceiver. See Replacing a TX Matrix Plus CXP Transceiver
Caution

Do not connect and disconnect a switching plane cable or CXP transceiver, 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).

Troubleshooting CXP Cables

Problem:

Description:

The show chassis fabric plane extensive or show chassis fabric fpc command indicates that the state of the optical links.

user@host>show chassis fabric plane extensive
user@host>show chassis fabric fpc

Solution

  1. Issue the request chassis sib f2s offline <slot> command to bring the faulty optical link offline, and bring the spare switching plane online.
  2. Issue the request chassis sib optics sfc 0 sib f13-sib-slot port disable command to bring down the optical link gracefully.
  3. Replace the CXP cable with a new cable. See Replacing a TX Matrix Plus CXP Cable .
  4. Issue the show chassis fabric optics command, and verify that the cable state in the output is CABLE_ CONNECTED. When a cable is inserted, links train automatically.
  5. Issue show chassis fabric optical-links command to verify that the link is Up , indicating that the link has trained successfully. If the link is not Up, replace the CXP transceiver one side at a time (on the TXP-F13-3D SIB and the TXP-LCC-3D SIB) to determine if either CXP transceiver has a fault. Replace the CXP transceiver to recovers the links. See Replacing a TX Matrix Plus CXP Transceiver.
  6. 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 System Log Explorer.

    Your customer support representative can assist you with using the information in the system log, along with the supplied loopback connector and adapter, to determine if you have a faulty TXP-F13-3D SIB, TXP-LCC-3D SIB, or the switching plane cable.

    Caution

    Do not connect and disconnect a switching plane cable or CXP transceiver, 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).