User Manual
Product information and planning
9500 MPR Rel. 3.1
3DB18809AAAA Issue 1 195/980
TDM flows classification
All the TDM2TDM traffic flows will be assigned to the highest egress priority queue (Q8). All the TDM2ETH
traffic flows will be assigned to the Q7 egress priority queue. All the MEF-8 ETH2ETH traffic flows will
be assigned to the Q5 egress priority queue.
Ethernet flows classification
For generic Ethernet flows in the switch the priority of each packet can be assigned according to the
information in:
– IEEE 802.1p: the packet is examined for the presence of a valid 802.1P user-priority tag. If the tag
is present the correspondent priority is assigned to the packet
.
– DiffServ: each packet is classified based on DSCP field in the IP header to determine the priority.
ATM PW flows classification
ATM PW flows will be assigned to Ethernet switch egress priority queues according to their CoS , as below
reported:
802.1P priority Queue
111, 110 Q5 (higher priority)
101 Q4
100 Q3
011, 000 Q2
010, 001 Q1
DiffServ priority Queue
111000, 110000, 101110, 101000 Q5 (higher priority)
100110, 100100, 100010, 100000 Q4
011110, 011100, 011010, 011000 Q3
010110, 010100, 010010, 010000
001110, 001100, 001010, 001000
000000
Q2
All remaining values Q1
ATM PW CoS Switch Egress Queue
Guaranteed (CBR) Q7 (higher priority)
Best Effort (UBR+) Q6
BackGround (UBR) Q1
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