Cabletron Systems EMME User Manual page 18

Eavesdrop prevention delivers a modified data portion (filled with a
random pattern of binary ones and zeros) of the Ethernet packet to all
ports except the port specified in the original packet's destination MAC
address field. Effectively all ports, except the actual destination port,
receive meaningless information. There are two learned MAC addresses
per port.
Full security allows the network administrator to configure the ports, so
that "broadcast" and "multicast" packets have the data portion of the
packet modified with a random pattern of ones and zeroes. Therefore, the
ports set to this mode do not see these packet types. The default setting for
"Full security" is disabled. Enabling the "Full security" function modifies
the broadcast and multicast packets.
LANVIEW
SECURE
addresses per LANVIEW
one or divided among several ports on the chip.
For LANVIEW
MAC addresses but may not exceed 34 MAC addresses, on that port, in
order to secure it. A port with 35 or more addresses can never be secured.
Ports with 3 - 34 MAC addresses can be secured and will need the
addresses manually entered to secure the port. Non-LANVIEW
ports can only be secured with 2 or less MAC addresses associated with
that port. Non-LANVIEW
never be secured.
LANVIEW
SECURE
When enabled, the first two addresses that are learned become the
expected address associated with that port on any LANVIEW
module.
EMME USER'S GUIDE
ETHERNET MANAGEMENT MODULE OVERVIEW
products support assignment of up to 32 MAC
SECURE
products, trunk ports are defined as 3 or more
SECURE
SECURE
is enabled upon locking a channel, module, or port.
chip. The addresses can be assigned to
ports with three or more addresses can
SECURE
SECURE
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