HP 8000M User Manual

Page 221

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6-145

Configuring the Switch

Class of Service (CoS): Managing Bandwidth More Effectively

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Table 6-9.

How the Switch Uses the ToS Configuration

Outbound Port

ToS Option:

IP Precedence
(Value = 0 - 7)

Differentiated Services

IP Packet in an
Untagged VLAN or
No VLAN

Depending on the value of the IP Precedence bits
in the packet’s ToS field, the packet will go to
either the high or normal priority outbound port
queue in the switch:

0 - 3 = normal priority
4 - 7 = high priority

For a given packet carrying a given codepoint in
the ToS field:
• If a priority (0 - 7) has been configured for that

codepoint, the packet will go to either the high
or normal priority outbound port queue in the
switch:
0 - 3 = normal priority
4 - 7 = high priority

• If No override (the default) has been

configured for that codepoint, then the packet
is not prioritized by ToS.

IP Packet in a
Tagged VLAN

Same as above, plus the IP Precedence value (0
- 7) will be used to set a corresponding 802.1p
priority in the VLAN tag carried by the packet to
the next downstream device.

Same as above, plus the user-configured Priority
value (0 - 7) will be used to set a corresponding
802.1p priority in the VLAN tag carried by the
packet to the next downstream device.

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