Media Links MD8000 Series, Руководство по эксплуатации

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MD8000 Rev. H MD8000 Series Transport System Summary 2.37
Bandwidth Control
The MD8000 system always secures the necessary bandwidth for Stream frames with the
highest priority. Being handled with the lower priority, Data frames may be discarded within
the system when the necessary bandwidth for higher priority frames is becoming unavailable.
Figure 2-33 illustrates the usage of 10Gbps Ethernet circuit where two streams of Stream
frames and various Data frames are multiplexed and transported. When the traffic volumes of
Stream 1, 2 and Data frames fluctuate and the sum of them is to exceed the 1Gbps limit, Data
frames with lower priority are partly discarded in order to secure the necessary bandwidth for
the Stream1 and 2 Stream frames.
Figure 2-33: Bandwidth Control
Source Video MAC Address
A unique 48 bit “Video MAC address” is automatically assigned to each source port of the
MD8000 Channel Service boards as shown below. Users cannot change the Source Video
MAC address.
Stream2
Stream1
Data
10Gbps
Data packets discarded
t
Data packets discarded
Bit 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24
Vendor ID
x'0010C4' for Media Links
Bit 23 22 21 20
Product Code
b'0001' for MD8000EX; b'0010' for MD8000
Bit 19 18 17 16 15 14 13 12 11 10
Chassis ID
Assigned at factory shipment
Bit 9 8 7 6 5 4
Slot Number
b'000001' for Slot 1,….., b'100010' for Slot 34. b'000000' unused.
Bit 3 2 1
Port Number
b'000' for Port 1,….., b'111' for Port 8
Bit 0
East/West
b'0' for East, b'1' for West