
Inbound Traffic Filter Criteria and Actions
117348-A Rev. A 3-13
OSI Criteria and Actions
You can configure OSI inbound traffic filters based on specified bit patterns in the
Connectionless Network Protocol (CLNP) header.
Predefined OSI Criteria
Table 3-9 lists the predefined criteria for OSI inbound traffic filters, and the
reference field, offset, and length for each criterion.
User-Defined OSI Criteria
In addition to the predefined OSI filter criteria, you can create traffic filters with
user-defined criteria by specifying an offset and length to these reference fields in
the CLNP header:
OSI Actions
The OSI filtering actions are Accept, Drop, and Log.
Table 3-9. Predefined Criteria for OSI Inbound Traffic Filters
Criterion Name Reference Field Offset Length
Destination Area OSI_DEST 0 16
Destination System ID OSI_DEST 16 48
Source Area OSI_SRC 0 16
Source System ID OSI_SRC 16 48
Reference Field Description
OSI_BASE Points to the first byte of the CLNP header
OSI_DEST Points to the last two bytes of the OSI_DEST reference field
OSI_SRC Points to the last two bytes of the OSI_SRC reference field
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