Cisco WS-C4507R Troubleshooting Manual page 48

RST-3508
9805_05_2004_c2
RST-3508
9805_05_2004_c2
© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
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Catalyst 4500 QoS Capabilities
Supervisor II (CAT OS)
Layer 2 only
•
System-wide QoS
•
Dual queues per port
•
Queue 1
Queue 2
© 2004 Cisco Systems, Inc. All rights reserved.
QoS on Supervisor I/II (Catalyst OS)
System-wide QoS configuration
•
Global configuration applies to all ports on
•
the switch
Disabling QoS configuration disables QoS on
•
all ports
By default a port state is untrusted
•
Ports can be set to have a default CoS on a
•
system-wide basis
© 2004 Cisco Systems, Inc. All rights reserved.
Cisco IOS Supervisors
Layer 2, 3, or 4 QoS
•
Per-port QoS
•
Four Tx queues per port
•
Strict priority queue
•
Dynamic queue memory
•
allocation
Packet classification and
•
marking
Policing/bursting
•
Shaping/sharing
•
Queue 4
Queue 3
Queue 2
Queue 1
95 95 95
96 96 96