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Settings 34
SmartLink 4020 Getting Started Guide 4 • Network—WAN
MTU Size
Figure 10. MTU section of the Settings window
MTU (Maximum Transfer Unit) Size
The size limit (bytes) of the packet for all outgoing packets.
WAN VLAN Configuration
The SmartLink 4020 can mark outgoing Ethernet frames on the WAN interface with VLAN and priority tags.
Other devices on the LAN can use the tags to control how frames from the SmartLink 4020 are processed. All
data leaving the SmartLink 4020 will be marked with the specific value unless overridden on the telephony
VLAN configuration settings.
Figure 11. WAN VLAN Configuration section of the Settings window
WAN
VLAN Tag (IEEE 802.1q)
IEEE 802.1q Ethernet VLAN tag for all outgoing packets on WAN Ethernet interface. The value should be
between 0 and 4094.
WAN
Priority Tag (IEEE 802.1q)
IEEE 802.1q Ethernet Priority tag for all outgoing packets on WAN Ethernet interface. The value should be
between 0 and 7.
Saving your work
When you are finished configuring the VLAN settings, click the Save Internet Settings button (see figure 9 on
page 33) to save all changes.