Cisco Catalyst 3750 Software Configuration Guide

26-32
Catalyst 3750 Metro Switch Software Configuration Guide
78-15870-01
Chapter 26 Configuring QoS
Configuring Auto-QoS
The switch automatically maps DSCP values to an ingress
queue and to a threshold ID.
Switch(config)# no mls qos srr-queue input dscp-map
Switch(config)# mls qos srr-queue input dscp-map
queue 1 threshold 2 9 10 11 12 13 14 15
Switch(config)# mls qos srr-queue input dscp-map
queue 1 threshold 3 0 1 2 3 4 5 6 7
Switch(config)# mls qos srr-queue input dscp-map
queue 1 threshold 3 32
Switch(config)# mls qos srr-queue input dscp-map
queue 2 threshold 1 16 17 18 19 20 21 22 23
Switch(config)# mls qos srr-queue input dscp-map
queue 2 threshold 2 26 33 34 35 36 37 38 39
Switch(config)# mls qos srr-queue input dscp-map
queue 2 threshold 2 48 49 50 51 52 53 54 55
Switch(config)# mls qos srr-queue input dscp-map
queue 2 threshold 2 56 57 58 59 60 61 62 63
Switch(config)# mls qos srr-queue input dscp-map
queue 2 threshold 3 24 25 27 28 29 30 31 40
Switch(config)# mls qos srr-queue input dscp-map
queue 2 threshold 3 41 42 43 44 45 46 47
The switch automatically maps DSCP values to an egress
queue in the queue-set and to a threshold ID.
Switch(config)# no mls qos srr-queue output dscp-map
Switch(config)# mls qos srr-queue output dscp-map
queue 1 threshold 3 40 41 42 43 44 45 46 47
Switch(config)# mls qos srr-queue output dscp-map
queue 2 threshold 3 24 25 27 28 29 30 31 48
Switch(config)# mls qos srr-queue output dscp-map
queue 2 threshold 3 49 50 51 52 53 54 55 56
Switch(config)# mls qos srr-queue output dscp-map
queue 2 threshold 3 57 58 59 60 61 62 63
Switch(config)# mls qos srr-queue output dscp-map
queue 3 threshold 3 16 17 18 19 20 21 22 23
Switch(config)# mls qos srr-queue output dscp-map
queue 3 threshold 3 26 32 33 34 35 36 37 38
Switch(config)# mls qos srr-queue output dscp-map
queue 3 threshold 3 39
Switch(config)# mls qos srr-queue output dscp-map
queue 4 threshold 1 8
Switch(config)# mls qos srr-queue output dscp-map
queue 4 threshold 2 9 10 11 12 13 14 15
Switch(config)# mls qos srr-queue output dscp-map
queue 4 threshold 3 0 1 2 3 4 5 6 7
The switch automatically sets up the ingress queues, with
queue 2 as the priority queue and queue 1 in shared mode. The
switch also configures the bandwidth and buffer size for the
ingress queues.
Switch(config)# no mls qos srr-queue input
priority-queue 1
Switch(config)# no mls qos srr-queue input
priority-queue 2
Switch(config)# mls qos srr-queue input bandwidth 90
10
Switch(config)# no mls qos srr-queue input buffers
The switch automatically configures the egress queue-set
buffer sizes. It configures the bandwidth and the SRR mode
(shaped or shared).
Switch(config)# mls qos queue-set output 1 buffers
20 20 20 40
Switch(config-if)# srr-queue bandwidth shape 10 0 0
0
Switch(config-if)# srr-queue bandwidth share 10 10
60 20
Table 26-5 Generated Auto-QoS Configuration (continued)
Description Automatically Generated Command

Cisco Catalyst 3750 Specifications

General

Device Type	Switch
Switching Capacity	32 Gbps
Forwarding Rate	38.7 Mpps
Stacking Bandwidth	32 Gbps
RAM	128 MB
Jumbo Frame Support	Yes
Switch Type	Managed
Model	Catalyst 3750 Series
Uplink Interfaces	SFP
Form Factor	Rack-mountable
MAC Address Table Size	12, 000 entries
Routing Protocol	RIP, OSPF, EIGRP
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Layer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)	PoE
Operating Temperature	-5 - 45 °C
Operating Humidity	10% to 85% non-condensing