
Configuring Traffic Filters and Protocol Prioritization
3-2
Transparent Bridge Criteria and Actions
Bridge filters are the most complex, because they support multiple encapsulation
methods and media types. Table 3-1 shows the encapsulation methods supported
on physical media types.
You filter inbound transparent bridge frames based on header fields within each of
the four supported encapsulation methods:
• Ethernet
• IEEE 802.2 logical link control (LLC)
• IEEE 802.2 LLC with Subnetwork Access Protocol (SNAP) header
• Novell Proprietary
Each transparent bridge encapsulation method has specific, predefined criteria for
filtering frames. Figure 3-1 illustrates the header content of each supported
encapsulation method.
Table 3-1. Bridge Encapsulation Support for Physical Media Types
Physical Medium
Bridge Encapsulation Method Supported
Ethernet 802.2 LLC LLC with SNAP Novell
Ethernet/802.3 Yes Yes Yes Yes
FDDI No Yes Yes No
Synchronous interface Yes Yes Yes Yes
Token Ring No Yes Yes No
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