
Inbound Traffic Filter Criteria and Actions
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DLSw Criteria and Actions
You can filter inbound DLSw traffic based on specified bit patterns contained
within the DLSw header, as defined in RFC 1434.
Predefined DLSw Criteria
Table 3-2 lists the predefined filtering fields for DLSw inbound traffic filters and
the reference field, offset, and length value for each criterion.
User-Defined DLSw Criteria
In addition to the predefined DLSw filter criteria, you can create inbound traffic
filters with user-defined criteria by specifying an offset and length to these
reference fields in the DLSw header:
DLSw Actions
The DLSw filtering actions are
• Drop, Log –– common to all inbound traffic filters
• Forward to Peer –– specifies that any frame that matches the filter will be sent
to the circuits that you specify
Table 3-10. Predefined Criteria for DLSw Inbound Traffic Filters
Criterion Name Reference Field Offset Length
Destination MAC Address DLS_BASE 192 48
Source MAC Address DLS_BASE 240 48
DSAP DLS_BASE 288 8
SSAP DLS_BASE 296 8
Reference Field Description
DLS_CTRL_START Points to the start of the DLSw header
DLS_DATA_START Point to start of the DLSw data
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