Specifications

Functions
94
4.3 Frame switching
RS2-4R
Release 1.0 03/04
4.3.3 Learning addresses
A RS2-4R monitors the age of the learned addresses. Address entries which
exceed a certain age (30 seconds, aging time) are deleted by the
RS2-4R
from its address table.
The RS2-4R floods data packets with an unknown target address.
The RS2-4R transmits data pakets with known target addresses to specific
destinations.
Note: A reboot deletes the learned address entries.
4.3.4 Prioritization
The RS2-4R supports two priority queues (traffic classes in compliance with
IEEE 802.1D-1998). The received data packets are assigned to these class
-
es by the priority of the data packet contained in the VLAN tag.
D Data packets with the priority field value 0-3 are forwarded with low
priority.
D Data packets with the priority field value 4-7 are forwarded with high
priority.
D All data packets with a VLAN tag are forwarded corresponding to the
entered priority.
This function prevents high priority data traffic being disrupted by other traffic
during busy periods. The lower priority traffic will be discarded when the
memory or transmission channel is overloaded.
The RS2-4R offers for handling the priority classes:
D Strict priority.