Cisco Bug: CSCtc73097 - 4GE-SFP-LC produces incorrect byte subif counts upon roll-over
Jan 09, 2017
- Cisco 12000 Series Routers
Known Affected Releases
3.6.0.LC 3.6.3.BASE 3.8.1.BASE
Symptom: When using a 4GE-SFP-LC card in a c12k router running IOS-XR, byte counts on 802.1Q subinterfaces will be reported incorrectly. Specifically, after every 68,719,476,735 bytes, a number of 206,158,430,209 bytes are added to the corresponding input/output bytes counter. As a result, counters seen on "show interface", as well as the input/output rate seen during the interval at which the error occurs, are wrong. Also SNMP will report incorrect data. Conditions: This is seen only: - on a c12k router running IOS-XR - with 4GE-SFP-LC card - using 802.1q subinterfaces - for the input/output byte counter on the subinterface(s) only.
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