Dscp Screens; Dscp Setup Screen - ZyXEL Communications MSC1000G User Manual

Click ACL > AntiMacspoof to display the screen shown next. Use this screen to enable or disable
protection against MAC address spoofing.
Note: A line card can detect MAC spoofing only when the spoofed MAC address is already
in use by a device connected to another subscriber port.
Figure 53 ACL > AntiMacspoof
The following table describes the labels in this screen.
Table 36 ACL > AntiMacspoof
LABEL
Enable
Apply
Cancel

4.18 DSCP Screens

DSCP (Differentiated Services Code Point) is a field in the header of IP packets for packet
classification purposes. The system's QoS (Quality-of-Service) uses DSCP to provide different level
of services and priorities for downstream data transmission.
IEEE 802.1p lets the Device transmit frames according to their 3-bit priority (0~7) in an IEEE
802.1q header. Frames with higher priority are served first. This Device allows you to overwrite the
DSCP level of service with an IEEE 802.1p priority for downstream traffic.

4.18.1 DSCP Setup Screen

Click ACL > DSCP > Setup to display the screen shown next. Use this screen to configure the
mapping between DSCP code points and IEEE 802.1p priorities for subscribers. Use the Switch >
Switch Port Setup > DSCP screen to configure the mapping for Gigabit Ethernet interfaces (see
Section 13.18.1 on page
Management Switch Card User's Guide
DESCRIPTION
Turn on anti-MAC spoofing to have the system check for hosts with fake or duplicated MAC
addresses which attempt to access the system.
Click Apply to save the changes in this screen to the system's volatile memory. The system
loses these changes if it is turned off or loses power, so use the Config Save link on the
navigation panel and then the Save button to save your changes to the non-volatile memory
when you are done configuring.
Click Cancel to begin configuring the screen again.
538).
Chapter 4 Access Control List Screens
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