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Bridging
4-46 Filtering Database
Aging Time
Indicates the length of time, in seconds, that Dynamic and Learned Addresses in
the Source Address Table are allowed to remain inactive before they are dropped
from the database. The allowable time range for these entries is 10 to 1,000,000
seconds. Aging time is not applicable to Static or Permanent entries. You can
conÞgure this Þeld, as described in the next section.
The following Þelds are applicable to the scrollable Address Entry panel of
Filtering Database entries.
Address
Lists the addresses for which the bridgeÕs Filtering Database has forwarding
and/or Þltering information.
Type
Indicates the type of an entry in the database. The possible types are Static,
Dynamic, Learned, Self, or Permanent. You can alter the entry type, as described
in the next section.
Source Port
Indicates the port number on which the address entry was Þrst detected. A
question mark (?) indicates that the address entry was not a learned entry, but
Port Filtering information applies to it (i.e., the entry is a created Permanent,
Dynamic, or Static entry and has corresponding Þltering information).
Receive Port
Indicates the number of the port on which a frame must be received in order for
the entryÕs Port Filtering information to apply. An asterisk (
*
) indicates that the
receive port is promiscuous, and applies to all ports of the bridge (assuming no
conßicting entry applies). You can change the receive port, as described in the
following section.
Port Filtering
Indicates the action that will take place at each bridge port when it receives
frames from the selected address entry. A green arrow indicates that the frames
received from the address will be forwarded to the portÕs associated segment
( ). A red circle indicates that frames will be Þltered (blocked) from the portÕs
associated segment ( ). You can change the Port Filtering action, as described
in the next section. (Note that port Þltering is scrollable among all the potential
ports; however, only two consecutive ports can be viewed simultaneously.)
Configuring the Filtering Database
You can conÞgure the Filtering Database by:
¥ Altering the Aging Time for Dynamic and Learned entries.
¥ Changing the type of entry with the Type buttons.