Cisco 500 Series Administration Guide

Quality of Service
Configuring QoS - General
Cisco 500 Series Stackable Managed Switch Administration Guide 606
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By changing the CoS/802.1p to Queue mapping (CoS/802.1p to Queue) and the
Queue schedule method and bandwidth allocation (Queue page), it is possible to
achieve the desired quality of service in a network.
The CoS/802.1p to Queue mapping is applicable only if one of the following exists:
• The device is in QoS Basic mode and CoS/802.1p trusted mode
• The device is in QoS Advanced mode and the packets belong to flows that
are CoS/802.1p trusted
Queue 1 has the lowest priority, queue 4 or 8 has the highest priority.
To map CoS values to egress queues:
STEP 1 Click Quality of Service > General > CoS/802.1p to Queue.
STEP 2 Enter the parameters.
• 802.1p—Displays the 802.1p priority tag values to be assigned to an egress
queue, where 0 is the lowest and 7 is the highest priority.
12 1 Best Effort
2 3 2 Excellent Effort
3 6 5 Critical Application - LVS
phone SIP
45 4 Video
5 8 7 Voice - Cisco IP phone
default
68 7 Interwork Control
LVS phone RTP
77 6 Network Control
802.1p
Values
(0-7, 7 being
the highest)
Queue
(8 queues 1-
8, 8 is the
highest
priority)
Standalone
7 Queues
(8 is the highest
priority used for
stack control
traffic) Stack
Notes

Cisco 500 Series Specifications

General

Model	Cisco 500 Series
Category	Switch
Mounting	Rack-mountable
Management	Web-based, CLI, SNMP
Ports	24, 48
Port Speed	10/100/1000 Mbps
PoE Support	Available on some models
Switching Capacity	Up to 176 Gbps
MAC Address Table Size	16, 000 entries
Security	ACLs, 802.1X
Quality of Service (QoS)	Yes
Dimensions	Varies by model
Weight	Varies by model
Humidity	10% to 90% non-condensing
Power Supply	Internal
Power Consumption	Varies by model
Jumbo Frame Support	Up to 9216 bytes