Hirschmann Power MICE - Directed frame forwarding

Traffic control
122
8.1 Directed frame forwarding
Basic - L3P
Release 3.1 06/07
8.1 Directed frame forwarding
Directed frame forwarding is a method used by the Switch to avoid unneces-
sary increases in the network load. The Switch features the following directed
frame forwarding functions:
D Store-and-forward
D Multiadress capability
D Aging of learned addresses
D Static address entries
D Disabling the specific packet distribution
8.1.1 Store-and-forward
All data received by the Switch is stored, and its validity is checked. Invalid
and defective data packets (> 1,522 Bytes or CRC errors) as well as frag
-
ments (< 64 Bytes) are discarded. Valid data packets are forwarded by the
Switch.
8.1.2 Multi-address capability
The Switch learns all the source addresses for a port. Only packets with
D unknown addresses
D these addresses or
D a multi/broadcast address
in the destination address field are sent to this port. The Switch enters
learned source addresses in its filter table
(see “Entering static address ent-
ries” on page 124).