________________________________________________ DS33X162/X161/X82/X81/X42/X41/X11/W41/W11
Rev: 063008
46 of 375
Figure 8-5. Forwarding Mode 3: Single Ethernet Port with LAN-VLAN Forwarding
WAN
Group 1
LAN Queue 4-P4
LAN Queue 3-P3
LAN Queue 2-P2
Ethern
et
M
A
C
1
Serial
Port 1
LAN Queue 1
Priority 1
TRANSMIT:
The 16 Serial Ports
are assigned to the
four Encapsulator
WAN Groups with
VCAT.TCR3.TVGS
RECEIVE:
The 16 Serial Ports
are assigned to the
four Decapsulator
WAN Groups with
VCAT.RCR4.RVGS
WAN Ports
LAN Ports
WAN Insert
Queue
QoS
Bridge
/Filte
r
Scheduler
and
T
ransmit
VCAT/LC
AS
Processing
VLAN (VID)
Lookup Table
Receive
VCAT/LCAS
Processor
Decapsulator #1 WAN Trap
LAN Extract
Queue
WAN Extract
Queue
LAN Insert
Queue
Encapsulator
1
LAN
Tra
p
VLAN
Processing
WAN
Group 2
LAN Queue 8-P4
LAN Queue 7-P3
LAN Queue 6-P2
LAN Queue 5
Priority 1
QoS
Encapsulator
2
WAN
Group 3 LAN Queue 12-P4
LAN Queue 11-P3
LAN Queue 10-P2
LAN Queue 9
Priority 1
QoS
Encapsulator
3
WAN
Group 4 LAN Queue 16-P4
LAN Queue 15-P3
LAN Queue 14-P2
LAN Queue 13
Priority 1
QoS
Encapsulator
4
Priority Lookup Table
Serial
Port 2
Serial
Port 3
Serial
Port 4
Serial
Port 5
Serial
Port 6
Serial
Port 7
Serial
Port 8
Serial
Port 9
Serial
Port 10
Serial
Port 11
Serial
Port 12
Serial
Port 13
Serial
Port 14
Serial
Port 15
Serial
Port 16
VLAN
Processing
Decapsulator #2 WAN Trap
Decapsulator #3 WAN Trap
Decapsulator #4 WAN Trap
Frames from the
Ethernet Interface
are forwarded to
the WAN groups
based on VLAN
Tag, then
scheduled by
Priority
Frames
toward the
Ethernet
Interface are
forwarded based
on the order of
receipt.