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Troubleshoot QOS in packet drop

akhildevv
Level 1
Level 1

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

1 Accepted Solution

Accepted Solutions

Giuseppe Larosa
Hall of Fame
Hall of Fame

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

 

View solution in original post

2 Replies 2

Giuseppe Larosa
Hall of Fame
Hall of Fame

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

 

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