Dell S5148F-ON OS10 Enterprise Edition User Guide Release 10.3.2E-R2 - Page 509

Con ETS, Optional

Page 509 highlights

• The CEE/IEEE2.5 versions of ETS TLVs are supported. ETS configurations are received in a TLV from a peer. Configure ETS ETS provides traffic prioritization for lossless storage, latency-sensitive, and best-effort data traffic on the same link. • Configure classes of dot1p and DSCP traffic and assign them to lossless queues. Use the class-trust class map to honor ingress dot1p and DSCP traffic. • Allocate guaranteed bandwidth to each lossless queue. An ETS queue can exceed the amount of allocated bandwidth if another queue does not use its share. ETS is disabled by default on all interfaces. 1 Configure trust maps of dot1p and DSCP values in CONFIGURATION mode. A trust map does not modify ingress values in output flows. Assign a qos-group (traffic class 0-7) to trusted dot1p/DSCP values in TRUST mode. A qos-group number is used only internally to schedule classes of ingress traffic. Enter multiple dot1p and dscp values in a hyphenated range or separated by commas. trust dot1p-map dot1p-map-name qos-group {0-7} dot1p {0-7} exit trust dscp-map dscp-map-name qos-group {0-7} dscp {0-63} exit 2 Configure a QoS map with trusted traffic-class (qos-group) to lossless-queue mapping in CONFIGURATION mode. Assign one or more qos-groups (0-7) to a specified queue in QOS-MAP mode. Enter multiple qos-group values in a hyphenated range or separated by commas. Enter multiple queue qos-group entries, if necessary. qos-map traffic-class queue-map-name queue {0-7} qos-group {0-7} exit 3 Create a service policy for the class-trust class in CONFIGURATION mode. Enter POLICY-CLASS-MAP mode and specify that dot1p or DSCP values are trusted. policy-map trust-policy-map-name class class-trust trust {dot1p | dscp} exit 4 Create a queuing class map for each ETS queue in CONFIGURATION mode. Enter match queue criteria in CLASS-MAP mode. class-map type queuing class-map-name match queue {0-7} exit 5 Create a queuing policy map in CONFIGURATION mode. Enter POLICY-CLASS-MAP mode and configure the percentage of bandwidth allocated to each traffic class-queue mapping. The sum of all DWRR-allocated bandwidth across ETS queues must be 100% (not including the strict priority queue). Otherwise, QoS automatically adjusts bandwidth percentages so that ETS queues always receive 100% bandwidth. The remaining non-ETS queues receive 1% bandwidth each. policy-map type queuing policy-map-name class class-map-name bandwidth percent {1-100} (Optional) To configure a queue as strict priority, use the priority command. Packets scheduled to a strict priority queue are transmitted before packets in non-priority queues. policy-map type queuing policy-map-name class class-map-name priority 6 Apply the trust maps for dot1p and DSCP values, and the traffic class-queue mapping globally on the switch in SYSTEM-QOS mode or on an interface or interface range in INTERFACE mode. system qos trust-map dot1p dot1p-map-name trust-map dscp dscp-map-name qos-map traffic-class queue-map-name Converged data center services 509

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The CEE/IEEE2.5 versions of ETS TLVs are supported. ETS
configurations
are received in a TLV from a peer.
Configure
ETS
ETS provides
traffic
prioritization for lossless storage, latency-sensitive, and
best-effort
data
traffic
on the same link.
Configure
classes of dot1p and DSCP
traffic
and assign them to lossless queues. Use the class-trust class map to honor ingress dot1p
and DSCP
traffic.
Allocate guaranteed bandwidth to each lossless queue. An ETS queue can exceed the amount of allocated bandwidth if another queue
does not use its share.
ETS is disabled by default on all interfaces.
1
Configure
trust maps of dot1p and DSCP values in CONFIGURATION mode. A trust map does not modify ingress values in output
flows.
Assign a
qos-group
(traffic
class 0-7) to trusted dot1p/DSCP values in TRUST mode. A
qos-group
number is used only
internally to schedule classes of ingress
traffic.
Enter multiple
dot1p
and
dscp
values in a hyphenated range or separated by
commas.
trust dot1p-map
dot1p-map-name
qos-group {0-7} dot1p {0-7}
exit
trust dscp-map
dscp-map-name
qos-group {0-7} dscp {0-63}
exit
2
Configure
a QoS map with trusted
traffic-class
(
qos-group
) to lossless-queue mapping in CONFIGURATION mode. Assign one or
more qos-groups (0-7) to a
specified
queue in QOS-MAP mode. Enter multiple
qos-group
values in a hyphenated range or
separated by commas. Enter multiple
queue qos-group
entries, if necessary.
qos-map traffic-class
queue-map-name
queue {0-7} qos-group {0-7}
exit
3
Create a service policy for the
class-trust
class in CONFIGURATION mode. Enter POLICY-CLASS-MAP mode and specify that
dot1p or DSCP values are trusted.
policy—map
trust-policy—map-name
class class-trust
trust {dot1p | dscp}
exit
4
Create a
queuing
class map for each ETS queue in CONFIGURATION mode. Enter
match queue
criteria in CLASS-MAP mode.
class—map type queuing
class—map-name
match queue {0-7}
exit
5
Create a
queuing
policy map in CONFIGURATION mode. Enter POLICY-CLASS-MAP mode and
configure
the percentage of
bandwidth allocated to each
traffic
class-queue mapping. The sum of all DWRR-allocated bandwidth across ETS queues must be
100% (not including the strict priority queue). Otherwise, QoS automatically adjusts bandwidth percentages so that ETS queues
always receive 100% bandwidth. The remaining non-ETS queues receive 1% bandwidth each.
policy—map type queuing
policy—map-name
class
class—map-name
bandwidth percent {1-100}
(Optional) To
configure
a queue as strict priority, use the
priority
command. Packets scheduled to a strict priority queue are
transmitted before packets in non-priority queues.
policy—map type queuing
policy—map-name
class
class—map-name
priority
6
Apply the trust maps for dot1p and DSCP values, and the
traffic
class-queue mapping globally on the switch in SYSTEM-QOS mode
or on an interface or interface range in INTERFACE mode.
system qos
trust-map dot1p
dot1p-map-name
trust-map dscp
dscp-map-name
qos-map traffic-class
queue-map-name
Converged data center services
509