D-Link DPH-120SE User Manual page 34

broadcast information is sent out from port 1 then transmitted to port 2,3and 4.
In chart 2, red and blue indicate two different VLANs in the switch, and port 1 and
port 2 belong to red VLAN, port 3 and port 4 belong to blue VLAN. If a broadcast
frame is sent out from port 1, switch will transmit it to port 2, the other port in the
red VLAN and not transmit it to port3 and port 4 in blue VLAN. By this means,
VLAN divide the broadcast domain viarestricting the range of broadcast frame
transition.
Note: chart 2 use red and blue to identify the different VLAN, but in practice,
VLAN uses different VLAN IDs to identify.
Link Layer
Discovery Protocol
(LLDP) Settings
Enable LLDP
Enable Learning
Function
Packet
Interval(1-3600)
Quality of Service
(Qos) Settings
Enable DSCP
QoS Configuration
Enable LLDP by selecting it.
After enabling LLDP Learn, telephone can
automatically learn the data of DSCP, 802.1p, VLAN
ID from the switch. If the data is different from the
data of the LLDP server, telephone will change its
own value as the value of theswitch (Synchronous
with VLAN in switch).
The time interval of sending LLDP Packet.
Enable DSCP by selecting it.