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Adapter Configuration
Corinex AV200 Powerline Ethernet Wall Mount
There is one offset, and one bitmask and pattern for the trigger condition. The trig-
ger condition is used to make sure that the Ethernet frame contains, for example,
an IP frame. To check this condition, the offset must be set to 16 and the bitmask
to 0xFFFF. If the resulting pattern is 0x0800, then the Ethernet frame contains an IP
packet and the classification can be made to a known field.
There is another offset and bitmask for the classification condition. The resulting
value is compared with a set of patterns. If the value matches a given pattern, the
packet will be classified with the specified priority. If the value does not match any of
the patterns, it will get a default priority.
There is a set of pre-defined criteria which classifies traffic based on the 802.1p field
of the Ethernet packet or the TOS field of the IP packet.
3.4.8 Security Configuration
The configuration page allows you to change the password. Type your new pass-
word and confirm by typing it in a second time. If both fields are left empty, the
password will be disabled (the message ‘No password installed’ will be shown).
You can turn the password protection back on at any time by simply entering a pass-
word, as described above.
When several traffic flows are sharing the same network, it is sometimes necessary
to establish several levels of priority in order to guarantee that bandwidth-sensitive
applications like video and telephony function smoothly under network congestion.
The traffic classifier is a packet inspector that is able to recognize several patterns
in an Ethernet frame, and assign a different priority to each of them. To ensure
that the classification is done correctly, there is a trigger mechanism prior to the
actual classification. The trigger mechanism is also based on pattern recognition of
a given location in each Ethernet packet. The following picture depicts the packet
classification mechanism:
Bitmask
Bitmask
Pattern
Pattern 1
Pattern 3
Trigger
Pattern 8
Other
Prio 1
Ethernet Packet
Offset
Offset
Prio 3
Prio 8
Default Priority
Pattern 2
Prio 2
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