
Quality of Service
Configuring a QoS Policy for IP Type of Service (ToS)
7.Click on OK. This returns you to the IP Device Address page. Repeat steps 4 through 7 for up to 30 IP Address policies.
Click on the Apply All IP Address Policies button. All buttons will appear temporarily
Configuring a QoS Policy for IP Type of
Service (ToS)
Every IP packet includes a ToS field. This field carries priority settings that are read and used, but not altered by HP Procurve switches. When an HP TopTools prioritization policy is configured for ToS criteria, the Procurve switches in the network read the content of the ToS field in packets received from upstream devices and applications and take actions based on whether the policy applies to the packets. To use ToS to configure priority, you need to anticipate the ToS field settings in IP packets entering Procurve switches from upstream devices. This involves having knowledge of how an upstream device or application will set the bits in the ToS field of IP packets transmitted onto the network. A ToS policy can prioritize IP packets in either of two ways:
■Use the Differentiated Services bits to select the packets to prioritize (ToS Differentiated Services option)
■Use the Precedence bits to prioritize a packet (ToS IP precedence option)
ToS Configuration Options
ToS policy configuration includes three options:
■Disabled (the default)
■IP Precedence
■Differential Services