Default Standard Qos Configuration; Default Ingress Queue Configuration - Cisco Catalyst 3750 Software Configuration Manual

Configuring Standard QoS

Default Standard QoS Configuration

QoS is disabled. There is no concept of trusted or untrusted ports because the packets are not modified
(the CoS, DSCP, and IP precedence values in the packet are not changed). Traffic is switched in
pass-through mode (packets are switched without any rewrites and classified as best effort without any
policing).
When QoS is enabled with the mls qos global configuration command and all other QoS settings are at
their defaults, traffic is classified as best effort (the DSCP and CoS value is set to 0) without any policing.
No policy maps are configured. The default port trust state on all ports is untrusted. The default ingress
queues and egress queue-set settings are described in the
on page 26-38
traffic on an ES port, see the

Default Ingress Queue Configuration

Table 26-6
Table 26-6 Default Ingress Queue Configuration
Feature
Buffer allocation
Bandwidth allocation
Priority queue bandwidth
WTD drop threshold 1
WTD drop threshold 2
1. The bandwidth is equally shared between the queues. SRR sends packets in shared mode only.
2. Queue 2 is the priority queue. SRR services the priority queue for its configured share before servicing the other queue.
Table 26-7
Table 26-7 Default CoS Input Queue Threshold Map
CoS Value
Queue ID - Threshold ID
Table 26-8
Table 26-8 Default DSCP Input Queue Threshold Map
DSCP Value
Queue ID - Threshold ID
Catalyst 3750 Metro Switch Software Configuration Guide
26-38
and the "Default Egress Queue-Set Configuration" section on page
"Default Hierarchical QoS Configuration" section on page
shows the default ingress queue configuration when QoS is enabled.
1
2
shows the default CoS input queue threshold map when QoS is enabled.
0–4
1 - 1
shows the default DSCP input queue threshold map when QoS is enabled.
0–39
1 - 1
"Default Ingress Queue Configuration" section
Queue 1
90 percent
4
0
100 percent
100 percent
5 6, 7
2 - 1 1 - 1
40–47 48–63
2 - 1 1 - 1
Chapter 26 Configuring QoS
26-39. For outbound
26-76.
Queue 2
10 percent
4
10
100 percent
100 percent
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