Vsan Versus Zone-Based Qos; Configuring Data Traffic - Cisco DS-X9530-SF1-K9 - Supervisor-1 Module - Control Processor Configuration Manual

Data Traffic
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m .
A similar occurrence in Switch 2 sends a response to the transaction request. The round trip delay
experienced by the OLTP server is independent of the volume of low priority traffic or the ISL
congestion. The backup traffic uses the available ISL bandwidth when it is not used by the OLTP traffic.
Tip To achieve this traffic differentiation, be sure to enable FCC (see the
page

VSAN Versus Zone-Based QoS

While you can configure both zone-based QoS and VSAN-based QoS configurations in the same switch,
both configurations have significant differences.
configuring QoS priorities based on VSANs versus zones.
Table 47-1
VSAN-Based QoS
If you configure the active zone set on a given
VSAN and also configure QoS parameters in any
of the member zones, you will not be able to
associate the policy map with the VSAN.
If the same flow is present in two class maps
associated to a policy map, the QoS value of the
class map attached first takes effect.
—
Takes effect even if QoS is disabled.
See the
policy.

Configuring Data Traffic

To configure QoS, follow these steps.
Enable the QoS feature.
Step 1
Create and define class maps.
Step 2
Define service policies.
Step 3
Apply the configuration.
Step 4
Cisco MDS 9000 Family Configuration Guide
47-6
47-3).
QoS Configuration Differences
"Zone-Based Traffic Priority" section on page 19-15
Chapter 47 Configuring Fabric Congestion Control and QoS
"Enabling FCC" section on
Table 47-1 highlights the differences between
Zone-Based QoS
You cannot activate a zone set on a VSAN which
already has a policy map associated.
If the same flow is present in two zones in a given
zoneset with different QoS values, the higher QoS
value is considered.
During a zone merge, if the Cisco SAN-OS
software detects a mismatch for the QoS
parameter, the link is isolated.
Takes effect only when QoS is enabled.
for details on configuring a zone-based QoS
OL-6973-03, Cisco MDS SAN-OS Release 2.x