Cisco WS-C4507R User Manual

© 2004 Cisco Systems, Inc. All rights reserved. Printed in USA.
Presentation_ID.scr
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© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Scheduling: Shaping
• Max rate (10K to 1 Gbps)
Shaped queue like a “virtual wire”
Packets clock out exactly at shaped rate
• Hold packets in queue when rate exceeded
• Example use:
Shape a bursty application to 1 Mbps to smooth it
• Supported on all ports, typically used with strict
priority queue
Shaper (Specifies Max BW)
TX Port Q
102102102
© 2004 Cisco Systems, Inc. All rights reserved.
RST-3508
9805_05_2004_c2
Scheduling: Sharing
• Minimum rate (32 Kbps to 1 Gbps)
Rate is guaranteed minimum
• Scheduling algorithm:
If below share rate, queue is high priority
High priority queues serviced first
• Sharing only on non-blocking gigabit ports in Supervisor IV
and II-Plus
• Supported on ALL ports on Supervisor Engine V
Shaper (Specifies Max BW)
Non-Blocking
Port
TX Port Q
Sharer (Specifies Min Guaranteed BW)

Cisco WS-C4507R Specifications

General

Brand	Cisco
Model	WS-C4507R
Category	Network Router
Language	English