Reference Guide
1222 | Quality of Service (QoS)
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clear qos statistics
c e s
Clears Matched Packets, Matched Bytes, and Dropped Packets. For TeraScale, clears 
Matched Packets, Matched Bytes, Queued Packets, Queued Bytes, and Dropped Packets.
Syntax
clear qos statistics interface-name.
Parameters
Defaults
No default behavior or values
Command Modes
EXEC
EXEC Privilege
Command
History
Usage
Information
E-Series Only Behavior
If a Policy QoS is applied on an interface when 
clear qos statistics is issued, it will clear the 
egress counters in 
show queue statistics and vice versa. This behavior is due to the values 
being read from the same hardware registers. 
The 
clear qos statistics command clears both the queued and matched byte and packet 
counters if the queued counters incremented based on classification of packets to the queues 
because of policy-based QoS. If the queued counters were incremented because of some other 
reason and do not reflect a matching QoS entry in CAM, then this command clears the 
matched byte and packet counters only. 
Related
Commands
match ip access-group
c e s
Configure match criteria for a class map, based on the access control list (ACL).
interface-name
Enter one of the following keywords:
• For a 1-Gigabit Ethernet interface, enter the keyword 
GigabitEthernet followed by the slot/port information. 
• For a 10-Gigabit Ethernet interface, enter the keyword 
TenGigabitEthernet followed by the slot/port information.
Version 8.3.19.0 Introduced on S4820T
Version 8.3.7.0 Introduced on S4810 
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.1.1.1 Introduced on E-Series
show qos statistics Display qos statistics.










