Cisco Systems Cisco ONS 15310-MA Understanding CoS-Based Packet Statistics, Fast Ethernet, 12-28

Chapter 12 Configuring Quality of Service on the ML-Series Card

Understanding CoS-Based Packet Statistics

policy-map policy_egress_bandwidth class customer_core_traffic

bandwidth 1000

class customer_voice priority 1000

class customer_data bandwidth 3000 class class-default bandwidth 5000

!

!

interface POS0 no ip address

crc 32

service-policy output policy_egress_bandwidth

!

Understanding CoS-Based Packet Statistics

Note For IEEE 802.1Q (QinQ) enabled interfaces, CoS accounting is based only on the CoS value of the outer metro tag imposed by the service provider. The CoS value inside the packet sent by the customer network is not considered for CoS accounting.

Enhanced performance monitoring displays per-CoS packet statistics on the ML-Series card interfaces when CoS accounting is enabled. CoS-based traffic utilization is displayed at the Fast Ethernet interface or subinterface (VLAN) level, or at the POS interface level. It is not displayed at the POS subinterface level. RPR statistics are not available at the SPR interface level, but statistics are available for the individual POS ports that make up the SPR interface. EtherChannel (port-channel) and BVI statistics are available only at the member port level. Table 12-6shows the types of statistics available at specific interfaces.

Table 12-6	Packet Statistics on ML-Series Card Interfaces
		Fast Ethernet	Fast Ethernet	POS	POS
Statistics Collected		Interface	Subinterface (VLAN)	Interface	Subinterface
Input—Packets and Bytes		Yes	Yes	No	No
Output—Packets and Bytes		Yes	Yes	No	No
Drop Count—Packets and		Yes	No	Yes	No
Bytes1

1. Drop counts only include discards caused by output congestion and are counted at the output interface.

CoS-based packet statistics are available through the Cisco IOS command-line interface (CLI) and Simple Network Management Protocol (SNMP), using an extension of the CISCO-PORT-QOS MIB. They are not available through Cisco Transport Controller (CTC).

	Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2
12-28	78-19415-01