Troubleshoot QOS in packet drop

[akhildevv]

Hello guys,

Need your help to understand below highlighted.

I am getting exceed drops in QOS voice class and value is showing as -ve.

Anyone having any idea about this? is it is a bug or what? Please suggest your ideas. Thanks. 

Class-map: VOICE-OUT (match-any)

          5273617 packets, 848716051 bytes

          30 second offered rate 281000 bps, drop rate 1000 bps

          Match: access-group 110

            5273617 packets, 848716051 bytes

            30 second rate 281000 bps

          Priority: 2048 kbps, burst bytes 51200, b/w exceed drops: -5170

          QoS Set

            precedence 5

              Packets marked 5273618

#mpls #QOS

[Giuseppe Larosa · Accepted solution]

Hello akhildevv,

I think this can be considered a cosmetic SW bug.

clearly you cannot have a negative number of drops.

also the total number of packets in the class is 5273617 so this cannot be the result of a wrapping of a 32 bit counter.

the offered rate is 281000 bps far less then 20148 kbps so your device should not be dropping any packet.

Hope to help

Giuseppe

[akhildevv]

Thanks Giuseppe, Yes it was a software bug.
Cheers,
Akhildev