Cabletron Systems FRM User Manual - page 295
St atus Displays
19-23
Bridge Forwarding Table
The Bridge Forwarding Table is used to match MAC addresses with Bridge ports on
which to forward frames. If an address is not found in the table, the frame will be for-
warded out all Bridge ports except those configured for native LLC-2.
All MAC addresses are in non-canonical (Token Ring) format.
As a frame is received, its source and destination MAC addresses will be added (if not
already there) to the table. The FRM software contains a set of reserved MAC
addresses that are considered "static," and will always be in the table. The remaining
entries are considered "dynamic," and will remain in the table for the time period con-
figured as the
Bridge Aging Timer
in Bridge Node Defaults.
Press
[B]
at the Bridge Status Displays Menu to display a forwarding table for all MAC
addresses received on Bridge ports in the node.
Figure 19-12 Bridge Forwarding Table Display
[C],[F],[D],[B]
from Main Menu
Pressing
[F2]
will update the display. (It is not updated automatically.)
Pressing
[F4]
will allow you to delete all dynamic entries. New entries will
then be added as frames containing MAC addresses are received on Bridge
ports that are in
Learning
or
Forwarding
state.
Information in this Display:
●
MAC Address
– source or destination address received in a frame.
●
BrPort
– the Bridge port used for forwarding traffic to the associated
MAC
address
.
●
Flags
:
◆
Static
– The entry is fixed in the software.
◆
Dynamic
– The entry was added when the address was received.
Nod e Name=n ode_xyz
Bridge Forwarding Table Disp lay
MAC A ddress
BrPort
Flags
C 00000000002
10
Static, D on't Fwd
C 000000000F0
unk nown
Discovery Pending
PgUp
PgD n
F2:Refresh Table
F3:Exit
F4:Flus h Table