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Summit 200 Series Switch Installation and User Guide 165
NOTE
DiffServ examination requires one access mask while it is enabled. See “Maximum Entries” on
page 119 for more information.
Changing DiffServ Code point assignments in the QoS Profile
The DiffServ code point has 64 possible values (2
6
= 64). By default, the values are grouped and
assigned to the default QoS profiles listed in Table 44.
You can change the QoS profile assignment for a code point by using an access list. See Chapter 9,
“Access Policies”, for more information.
Replacing DiffServ Code Points
An access list can be used to change the DiffServ code point in the packet prior to the packet being
transmitted by the switch. This is done with no impact on switch performance.
To replace the DiffServ code point, you will use an access list to set the new code point value. See
Chapter 9, “Access Policies”, for more information on using access lists. You will use the
set
code-point
parameter of the create access list command to replace the value.
To display the DiffServ configuration, use the following command:
show ports <portlist> info {detail}
NOTE
The show ports command displays only the default code point mapping.
DiffServ Examples
For information on the access list and access mask commands in the following examples, see Chapter 9,
“Access Policies”.
Use the following command to use the DiffServe code point value to assign traffic to the hardware
queues:
enable diffserv examination ports all
Table 44: Default Code Point-to-QoS Profile Mapping
Code Point QoS Profile
0-7 Qp1
8-15 Qp2
16-23 Qp3
24-31 Qp4
32-39 Qp5
40-47 Qp6
48-55 Qp7
56-63 Qp8