Quality of Service

Configuring a QoS Policy for IP Type of Service (ToS)

IP Packet in

Depending on the value of

For a given packet carrying a given codepoint

an

the IP Precedence bits in

in the ToS field:

Untagged

the packet's ToS field, the

• If a priority (0 - 7) has been configured for

VLAN or No

packet will go to either the

that codepoint, the ToS policy sends the

VLAN

high or normal priority

packet to either the high or normal priority

 

outbound port queue of

outbound port queue in the network's

 

Procurve switches:

Procurve switches.

 

0 - 3 = normal priority

• If No override (the default) has been

 

4 - 7 = high priority

configured for that codepoint, then the

 

 

packet is not prioritized by a ToS policy.

 

 

 

IP Packet in

Same as above, plus the IP

Same as above, plus the user-configured

a Tagged

Precedence value (0 - 7)

Priority value (0 - 7) will be used to set a

VLAN

will be used to set a

corresponding 802.1p priority in the VLAN tag

 

corresponding 802.1p

carried by the packet when it exits from a

 

priority in the VLAN tag

Procurve switch.

 

carried by the packet when

 

 

it exits from a Procurve

 

 

switch.

 

 

 

 

How To Configure a ToS Policy

1.In the HP TopTools navigation frame, click on the Policies button.

2.In the resulting pull down menu, click on Quality of Service to display the Main QoS window.

3.In the Main QoS window click on IP ToS to display the IP ToS window.

4.Select a group, then using the IP Type of Service pull down menu, select a ToS option:

•Disabled -- Disables IP ToS prioritization policy in your network.

•IP Precedence -- Enables IP Precedence as the ToS policy in your network.

•Differential Services --Enables Differential Services as the ToS policy in your network.

5.Click on the Apply IP ToS Policy button to configure the ToS policy on the QoS-capable, discovered HP switches on the network.

6.Click on the Return button to return to the main ToS screen.

7.Do one of the following:

•If you selected IP Precedence (in step 4, above) for your ToS policy, you are finished configuring ToS prioritization policy and can go on to other HP TopTools activities.

•If you selected Differential Services (in step 3, above) for your ToS policy:

a. Open a window in which you can Telnet to the console interface in each of the individual Procurve switches in your network.

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