Bug ID 527206: Management interface may flap due to LOP sync error

Last Modified: Oct 06, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP All(all modules)

Known Affected Versions:
11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5, 11.6.0 HF6, 11.6.0 HF7, 11.6.0 HF8, 11.6.1, 11.6.1 HF1, 11.6.1 HF2, 11.6.2, 11.6.2 HF1, 11.6.3, 11.6.3.1, 11.6.3.2, 12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4, 12.1.0, 12.1.0 HF1, 12.1.0 HF2, 12.1.1, 12.1.1 HF1, 12.1.1 HF2

Fixed In:
13.0.0, 12.1.2, 11.6.3.3, 11.5.9

Opened: Jun 10, 2015
Severity: 3-Major
Related AskF5 Article:
K42065632

Symptoms

An error that occurs while reading the management interface registers might cause incorrect interpretation of the management interface state, which might cause the management interface to flap. Example error sequence: -- warning chmand[7018]: 012a0004:4: getLopReg exception: No LopCmd reply match found for action=0x1 obj_id=0x67 subobj=0x0 slot=0xff. -- err chmand[7018]: 012a0003:3: GET_MEDIA failure (status=0xffffffff) page=0x%1 reg=0x0 : File mgmtif/BourneMgmtIfSvc.cpp Line 357. -- warning chmand[7018]: 012a0004:4: getLopReg: lop data size does not match, u16DataLen=0x5 expected=0x7. -- warning chmand[7018]: 012a0004:4: getLopReg: lop data size does not match, u16DataLen=0x7 expected=0x5. ... notice chmand[7018]: 012a0005:5: Interface: 2/mgmt is DOWN. ... notice chmand[7018]: 012a0005:5: Interface: 2/mgmt is UP.

Impact

The management interface on the affected blade or appliance might be down for several seconds, 15 seconds being a typical interval.

Conditions

This problem might occur rarely on BIG-IP 2000-/4000-series, 5000-/7000-series, and 10000-/12000-series appliances and on VIPRION 2100, 2150, 2250 blades.

Workaround

None.

Fix Information

Rare Management interface flap due to LOP sync error no longer occurs on BIG-IP 2000-/4000-series, 5000-/7000-series, and 10000-/12000-series appliances and on VIPRION 2100, 2150, 2250 blades.

Behavior Change