Directed Frame Forwarding; Store-And-Forward; Multi-Address Capability - Hirschmann MS30, Power MICE, MACH 4000, OCTOPUS User Manual

Industrial ethernet gigabit switch
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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
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
ries" on page
104).
102
8.1 Directed frame forwarding
"Entering static address ent-
Layer 2 Enhanced with Layer 2 Professional
Release 1.0 10/05

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