D-Link DES-6500 - Switch User Manual page 111

Priority
Replace Dscp (0-
63)
Offset
Port
To view the settings of a previously correctly configured rule, click
xStack DES-6500 Modular Layer 3 Chassis Ethernet Switch User Manual
This parameter can be specified to re-write the 802.1p default priority previously set in the
Switch, which is used to determine the CoS queue to which packets are forwarded. Once this
field is specified, packets accepted by the Switch that match this priority are forwarded to the
CoS queue specified previously by the user.
replace priority − Click the corresponding box to re-write the 802.1p default priority of a packet
to the value entered in the Priority field, which meets the criteria specified previously in this
command, before forwarding it on to the specified CoS queue. Otherwise, a packet will have its
incoming 802.1p user priority re-written to its original value before being forwarded by the
Switch.
For more information on priority queues, CoS queues and mapping for 802.1p, see the QoS
section of this manual.
Select this option to instruct the Switch to replace the DSCP value (in a packet that meets the
selected criteria) with the value entered in the adjacent field.
This field will instruct the Switch to mask the packet header beginning with the offset value
specified:
value (0-15) - Enter a value in hex form to mask the packet from the beginning of the packet
•
to the 15th byte.
value (16-31) - Enter a value in hex form to mask the packet from byte 16 to byte 31.
•
value (32-47) - Enter a value in hex form to mask the packet from byte 32 to byte 47.
•
value (48-63) - Enter a value in hex form to mask the packet from byte 48 to byte 63.
•
value (64-79) - Enter a value in hex form to mask the packet from byte 64 to byte 79.
•
The Access Rule may be configured on a per-port basis by entering the port number of the line
card in the chassis into this field. The port list is specified by listing the lowest line card number
and the beginning port number on that line card, separated by a colon. Then the highest line
card number, and the highest port number of the range (also separated by a colon) are
specified. The beginning and end of the port list range are separated by a dash. For example,
1:3 specifies line card number 1, port 3. 2:4 specifies line card number 2, port 4. 1:3 - 2:4
specifies all of the ports between line card 1, port 3 and line card 2, port 4 − in numerical order.
Entering all will denote all ports on the Switch.
Figure 6- 67. Access Rule Display window (Packet Content Mask)
in the Access Rule Table to view the following screen:
96