Cisco Sg3008 Manual

							Quality of Service
QoS Advanced Mode
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To add a QoS policy:
STEP 1Click Quality of Service > QoS Advanced Mode > Policy Table.
This page displays the list of defined policies.
STEP  2Click Policy Class Map Table to display the Policy Class Maps page.
-or
Click Add to open the Add Policy Table page.
STEP  3Enter the name of the new policy in the New Policy Name field.
STEP  4Click Apply. The QoS policy profile is added, and the Running Configuration file is 
updated.
Policy Class Maps
One or more class maps can be added to a policy. A class map defines the type of 
packets that are considered to belong to the same traffic flow.
NOTEYou cannot configure a policer to a class map when the device is operating in 
Layer 3 mode. The device supports policers only in Layer 2 mode.
To add a class map to a policy:
STEP 1Click Quality of Service > QoS Advanced Mode > Policy Class Maps.
STEP  2Select a policy in the Filter, and click Go. All class maps in that policy are 
displayed.
STEP  3To add a new class map, click Add.
STEP  4Enter the parameters.
•Policy Name—Displays the policy to which the class map is being added.
•Class Map Name—Select an existing class map to be associated with the 
policy. Class maps are created in the Class Mapping page.
•Action Type—Select the action regarding the ingress CoS/802.1p and/or 
DSCP value of all the matching packets.
-
Use default trust mode—Ignore the ingress CoS/802.1p and/or DSCP 
value. The matching packets are sent as best effort. 
						

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QoS Advanced Mode
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-Always Trust—If this option is selected, the device trusts the CoS/802.1p 
and DSCP of the matching packet. If a packet is an IP packet, the device 
puts the packet in the egress queue based on its DSCP value and the 
DSCP to Queue Table. Otherwise, the egress queue of the packet is 
based on the packets CoS/802.1p value and the CoS/802.1p to Queue 
Table.
-
Set—If this option is selected, use the value entered in the New Value box 
to determine the egress queue of the matching packets as follows:
If the new value (0..7) is a CoS/802.1p priority, use the priority value and 
the CoS/802.1p to Queue Table to determine the egress queue of all the 
matching packets.
If the new value (0..63) is a DSCP, use the new DSCP and the DSCP to 
Queue Table to determine the egress queue of the matching IP packets.
Otherwise, use the new value (1..8) as the egress queue number for all the 
matching packets.
•Police Type—Available in Layer 2 system mode only. Select the policer type 
for the policy. The options are:
-None—No policy is used.
-Single—The policer for the policy is a single policer.
-Aggregate—The policer for the policy is an aggregate policer.
•Aggregate Policer—Available in Layer 2 system mode only. If Police Type 
is Aggregate, select a previously-defined (in the Aggregate Policer page) 
aggregate policer.
If Police Type is Single, enter the following QoS parameters:
•Ingress Committed Information Rate (CIR)—Enter the CIR in Kbps. See a 
description of this in the Bandwidth page.
•Ingress Committed Burst Size (CBS)—Enter the CBS in bytes. See a 
description of this in the Bandwidth page.
•Exceed Action—Select the action assigned to incoming packets exceeding 
the CIR. The options are:
-None—No action.
-Drop—Packets exceeding the defined CIR value are dropped. 
						

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QoS Advanced Mode
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-Out of Profile DSCP—IP packets exceeding the defined CIR are 
forwarding with a new DSCP derived from the Out Of Profile DSCP 
Mapping Table.
STEP  5Click Apply. 
Policy Binding
The Policy Binding page shows which policy profile is bound and to which port. 
When a policy profile is bound to a specific port, it is active on that port. Only one 
policy profile can be configured on a single port, but a single policy can be bound 
to more than one port .
When a policy is bound to a port, it filters and applies QoS to ingress traffic that 
belongs to the flows defined in the policy. The policy does not apply to traffic 
egress to the same port.
To edit a policy, it must first be removed (unbound) from all those ports to which it 
is bound.
NOTEIt is possible to either bind a port to a policy or to an ACL but both cannot be bound.
To define policy binding:
STEP 1Click Quality of Service > QoS Advanced Mode > Policy Binding.
STEP  2Select a Policy Name and Interface Type if required.
STEP  3Click Go. The policy is selected.
STEP  4Select the following for the policy/interface:
•Binding—Select to bind the policy to the interface.
•Permit Any—Select to forward packets on the interface if they do not match 
any policy. 
NOTEPermit Any can be defined only if IP Source Guard is not activated on 
the interface.
STEP  5Click Apply. The QoS policy binding is defined, and the Running Configuration file 
is updated. 
						

							Quality of Service
Managing QoS Statistics
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Managing QoS Statistics
From these pages you can manage the Single Policer, Aggregated Policer, and 
view queues statistics.
Policer Statistics
A Single Policer is bound to a class map from a single policy. An Aggregate Policer 
is bound to one or more class maps from one or more policies. 
Viewing Single Policer Statistics 
The Single Policer Statistics page indicates the number of in-profile and out-of-
profile packets that are received from an interface that meet the conditions 
defined in the class map of a policy. 
NOTEThis page is not displayed when the device is in Layer 3 mode.
To  v i e w  p o l i c e r  s t a t i s t i c s :  
STEP 1Click Quality of Service > QoS Statistics > Single Policer Statistics.
This page displays the following fields:
•Interface—Statistics are displayed for this interface.
•Policy—Statistics are displayed for this policy.
•Class Map—Statistics are displayed for this class map.
•In-Profile Bytes—Number of in-profile bytes received. 
•Out-of-Profile Bytes—Number of out-profile bytes received.
STEP  2Click Add.
STEP  3Enter the parameters.
•Interface—Select the interface for which statistics are accumulated.
•Policy Name—Select the policy name.
•Class Map Name—Select the class name. 
						

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Managing QoS Statistics
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STEP  4Click Apply. An additional request for statistics is created and the Running 
Configuration file is updated.
Viewing Aggregated Policer Statistics 
To view aggregated policer statistics: 
STEP 1Click Quality of Service > QoS Statistics > Aggregate Policer Statistics.
This page displays the following fields: 
•Aggregate Policer Name—Policer on which statistics are based.
•In-profile bytes—Number of in-profile packets that were received. 
•Out-of-profile bytes—Number of out-of-profile packets that were received. 
STEP  2Click Add.
STEP  3Select an Aggregate Policer Name, one of the previously-created Aggregate 
Policers for which statistics are displayed.
STEP  4Click Apply. An additional request for statistics is created, and the Running 
Configuration file is updated.
Viewing Queues Statistics
The Queues Statistics page displays queue statistics, including statistics of 
forwarded and dropped packets, based on interface, queue, and drop 
precedence. 
To view Queues Statistics: 
STEP 1Click Quality of Service > QoS Statistics > Queues Statistics.
This page displays the following fields: 
•Refresh Rate—Select the time period that passes before the interface 
Ethernet statistics are refreshed. The available options are: 
-No Refresh—Statistics are not refreshed.
-15 Sec—Statistics are refreshed every 15 seconds. 
						

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-30 Sec—Statistics are refreshed every 30 seconds.
-60 Sec—Statistics are refreshed every 60 seconds.
•Counter Set—T h e  o p t i o n s  a r e :
-Set 1—Displays the statistics for Set 1 that contains all interfaces and 
queues with a high DP (Drop Precedence). 
-Set 2—Displays the statistics for Set 2 that contains all interfaces and 
queues with a low DP.
•Interface—Queue statistics are displayed for this interface.
•Queue—Packets were forwarded or tail dropped from this queue.
•Drop Precedence—Lowest drop precedence has the lowest probability of 
being dropped.
•To t a l  P a c k e t s—Number of packets forwarded or tail dropped.
•Tail Drop Packets—Percentage of packets that were tail dropped.
STEP  2Click Add.
STEP  3Enter the parameters.
•Counter Set—Select the counter set:
-Set 1—Displays the statistics for Set 1 that contains all interfaces and 
queues with a high DP (Drop Precedence). 
-Set 2—Displays the statistics for Set 2 that contains all interfaces and 
queues with a low DP.
•Interface—Select the ports for which statistics are displayed. The options 
are: 
-Por t—Selects the port on the selected unit number for which statistics 
are displayed.
-All Por ts—Specifies that statistics are displayed for all ports.
•Queue—Select the queue for which statistics are displayed.
•Drop Precedence—Enter drop precedence that indicates the probability of 
being dropped. 
						

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Managing QoS Statistics
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STEP  4Click Apply. The Queue Statistics counter is added, and the Running Configuration 
file is updated. 
						

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Managing QoS Statistics
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Managing QoS Statistics
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Managing QoS Statistics
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