Cisco Cisco Nexus 5010 Switch Guida Alla Progettazione

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The class-default value is associated with QoS group 0. No static allocation exists for FCoE traffic.

On the Cisco Nexus 5500 platform, traffic classes and QoS groups are allocated as follows:

●

class-default: This is the class for all traffic that is not otherwise classified as belonging to other classes.

This class exists by default; it cannot be removed, but it can be modified.

●

Five user-defined traffic classes: Of these, four can be configured as no drop (and one of the no-drop

classes can be used for FCoE traffic).

You can verify the traffic class allocation by using this command:

show policy-map [system]

show policy-map interface brief

By default on the Cisco Nexus 5500 platform, only default policies are applied.

class-map type qos match-any class-default

match any

policy-map type qos default-in-policy

class type qos class-default

set qos-group 0

policy-map type network-qos default-nq-policy

class type network-qos class-default

mtu 1500

multicast-optimize

policy-map type queuing default-out-policy

class type queuing class-default

bandwidth percent 100

As you can see in the default configuration, there is no class reserved for FCoE, which you can also confirm by

looking at the interface configurations:

nexus5500-1# show policy-map int eth1/1

Service-policy (qos) input: default-in-policy

Class-map (qos): class-default (match-any)

Match: any

set qos-group 0

Service-policy (queuing) output: default-out-policy

Class-map (queuing): class-default (match-any)

Match: qos-group 0

bandwidth percent 100

nexus5500-1# show queuing int eth1/1

Ethernet1/1 queuing information:

TX Queuing

qos-group sched-type oper-bandwidth

0 WRR 100

RX Queuing