BugZero | Cisco BugID CSCvq71294 - LR transceiver stops transmitting laser when port ...

Cisco - Defect ID: CSCvq71294

LR transceiver stops transmitting laser when port unshut after a long shut

Cisco - Defect ID: CSCvq71294

LR transceiver stops transmitting laser when port unshut after a long shut

Last updated on 5/8/2025

Overall: 7.87.8

Severity: 8.28.2

Lifecycle: 9.19.1

Popularity: 4.64.6

What is the BugZero Risk Score?

Vendor details

No defect details.

Overall: 7.87.8

Severity: 8.28.2

Lifecycle: 9.19.1

Popularity: 4.64.6

What is the BugZero Risk Score?

Vendor details

No defect details.

Symptom

Link does not come up after no shut of interface with a known good cable and transceiver. This is only known to affect the following transceivers: CPAK-100G-ER4L= CPAK-100G-LR4= CPAK-100G-ER4L CPAK-100G-LR4

Conditions

no shut of the interface after a prolonged shut.

Workaround

Physically OIR the transceiver.

Further Problem Description

Original Vendor Announcement

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Cisco - Defect ID: CSCvq71294

LR transceiver stops transmitting laser when port unshut after a long shut

Cisco - Defect ID: CSCvq71294

LR transceiver stops transmitting laser when port unshut after a long shut

Last updated on 5/8/2025

Vendor details

Vendor details

Description

Symptom

Conditions

Workaround

Further Problem Description

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