Cabletron Systems MicroMMAC 22ES Reference Manual page 12

M MMAC Protocol Support
ICRO
Bridge Filtering
Bridge filtering enables a network administrator to control the flow of
packets across the MicroMMAC. Bridge filtering can be used to "deny"
or "allow" packets based on a "matched pattern" using a specified
position and hexadecimal content within the packet. This enables
restricting or forwarding of messages based on address, protocol, or data
content. Common uses include preventing access to remote networks,
controlling unauthorized access to the local network, and limiting
unnecessary traffic.
The MicroMMAC supports the following Bridge Filters:
• dot1dStatic Filters (IETF RFC1493)
• Ethernet Special Filtering Database (from the ctbridge-mib)
6
3
MicroMMAC Local Management Routing Addendum