IndexIndex
switching domain. In other words, one VLAN is used for upstream traffic and
the other VLAN is used for downstream traffic.
The second parallel VLAN ID (paths marked red in the figure below) is also
used for some upstream traffic, like ARP, DHCP and IGMP.
Figure 33 ARP and DHCP VLAN ID
Note: When configured from PEM, this feature is only available when Peer
to Peer allowed is selected as the Access Method. In this case, two
VLANs are configured for the Service: Downstream VLAN and
Upstream VLAN.
EFN324
End-user
IP A
MAC 11
End-user
IP B
MAC 22
I
P
I
P
Router
MAC 33
Packet
Dest. MAC 33
Dest. IP B
Router
MAC 33
Packet
Dest. MAC 33
Dest. IP B
Packet
Dest. MAC 22
Dest. IP B
Physical
port
EFN324
End-user
IP A
MAC 11
End-user
IP B
MAC 22
I
P
I
P
Upstream
VLAN
Downstream
VLAN
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