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Cisco Bug: CSCun33532 - Ring port went down after cable pull on CPT50 side

Last Modified

Jan 29, 2017

Products (1)

  • Cisco Carrier Packet Transport (CPT) System

Known Affected Releases


Description (partial)

Ring port went down after cable pull on CPT50 side

1. Have 3 Rings in total in CTC mode.

Ring 1 -> 4 PB, closed
Ring 2 -> 3 PB, open
Ring 3 -> 3 PB, closed

4/1 and 5/2 are the East and West port for Ring 1 respectively.

2. Removed 56/45 from the CPT50
3. Port 5/2 flapped and went down.
4. Connected back 56/45.
5. 5/2 and 4/1 both didn't come up.
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