BugZero | Cisco BugID CSCvr77583 - New IP/PPPoE subscribers not reachable after port-...

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BugZero | Cisco BugID CSCvr77583 - New IP/PPPoE subscribers not reachable after port-...

ODD
Cisco
CSCvr77583

Cisco - Defect ID: CSCvr77583

New IP/PPPoE subscribers not reachable after port-channel reduced to single member link

ODD
Cisco
CSCvr77583

Cisco - Defect ID: CSCvr77583

New IP/PPPoE subscribers not reachable after port-channel reduced to single member link

Last updated on June 28th, 2025

BugZero Risk Score
6.1 Medium

Overall: 6.1

Severity: 6.4

Lifecycle: 9.1

Popularity: 4.6

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Bug Details

Description

Symptom

IPoE/PPPoE subscribers that come up when the port-channel has been reduced to a single member link will not be reachable.

Conditions

- Port-channel member links reduced to 1 - New subscribers come up while port-channel is in this state - Affects aggregate port-channels, hence requires "platform qos port-channel-aggregate port-channel-number" configured on the port-channel with subscribers running across it.

Workaround

- Add "lacp min-bundle 2" to port-channel configuration to prevent the port-channel being up with a single member link.

Further Problem Description

Change history

2025-06-28 Added: 16.6.6

Relevant Products

Click on a version to see all relevant bugs

Affected versions:16.6.6

Fixed versions: 16.12.10, 16.12.5, 16.12.5a, 16.12.5b, 16.12.6, 16.12.6a, 16.12.7, 16.12.8, 16.12.9, 16.6.10, 16.6.9, 16.9.7, 16.9.8, 16.9.8a, 16.9.8b, 17.05.01c, 17.10.1, 17.10.1a, 17.10.1b, 17.11.1, 17.11.1a, 17.12.1, 17.3.2, 17.3.2a, 17.3.3, 17.3.3a, 17.3.4, 17.3.4a, 17.3.4b, 17.3.4c, 17.3.5, 17.3.5a, 17.3.5b, 17.3.6, 17.3.7, 17.4.1, 17.4.1a, 17.4.1b, 17.4.1c, 17.4.2, 17.4.2a, 17.5.1, 17.5.1a, 17.5.1b, 17.5.1c, 17.6.1, 17.6.1a, 17.6.1w, 17.6.1x, 17.6.1y, 17.6.1z, 17.6.1z1, 17.6.2, 17.6.3, 17.6.3a, 17.6.4, 17.6.5, 17.7.1, 17.7.1a, 17.7.1b, 17.7.2, 17.8.1, 17.8.1a, 17.9.1, 17.9.1a, 17.9.1w, 17.9.1x, 17.9.1x1, 17.9.1y, 17.9.1y1, 17.9.2, 17.9.2a, 17.9.3, 17.9.3a, 17.9.4, Amsterdam-17.3.2a, Bengaluru-17.4.1, Bengaluru-17.5.1, Fuji-16.9.7, Gibraltar-16.12.5

Relevant Products

Click on a version to see all relevant bugs

Affected versions:16.6.6

Fixed versions: 16.12.10, 16.12.5, 16.12.5a, 16.12.5b, 16.12.6, 16.12.6a, 16.12.7, 16.12.8, 16.12.9, 16.6.10, 16.6.9, 16.9.7, 16.9.8, 16.9.8a, 16.9.8b, 17.05.01c, 17.10.1, 17.10.1a, 17.10.1b, 17.11.1, 17.11.1a, 17.12.1, 17.3.2, 17.3.2a, 17.3.3, 17.3.3a, 17.3.4, 17.3.4a, 17.3.4b, 17.3.4c, 17.3.5, 17.3.5a, 17.3.5b, 17.3.6, 17.3.7, 17.4.1, 17.4.1a, 17.4.1b, 17.4.1c, 17.4.2, 17.4.2a, 17.5.1, 17.5.1a, 17.5.1b, 17.5.1c, 17.6.1, 17.6.1a, 17.6.1w, 17.6.1x, 17.6.1y, 17.6.1z, 17.6.1z1, 17.6.2, 17.6.3, 17.6.3a, 17.6.4, 17.6.5, 17.7.1, 17.7.1a, 17.7.1b, 17.7.2, 17.8.1, 17.8.1a, 17.9.1, 17.9.1a, 17.9.1w, 17.9.1x, 17.9.1x1, 17.9.1y, 17.9.1y1, 17.9.2, 17.9.2a, 17.9.3, 17.9.3a, 17.9.4, Amsterdam-17.3.2a, Bengaluru-17.4.1, Bengaluru-17.5.1, Fuji-16.9.7, Gibraltar-16.12.5

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