In chart 1, there is a layer 2 that switches without setting VLAN. Any broadcast
frame will be transmitted to the other ports except the send port. For example, a
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 via
restricting 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.
QoS Configuration
Link Layer
Discovery Protocol
(LLDP) Settings
Enable LLDP
Enable LLDP by selecting it.
Enable Learning
Function
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 the switch (Synchronous
with VLAN in switch).
Package
Interval(1-3600)
The time interval of sending LLDP Packet.
Quality of Service
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