Hirschmann RS20 User Manual page 136

Network load control
Ports 1.1 to 1.3 are assigned to the terminal devices of the Yellow VLAN
and thus to VLAN ID 2, and ports 2.1 to 2.4 are assigned to terminal de-
vices of the Green VLAN and thus to VLAN ID 3. Because terminal de-
vices usually do not sent data packets with a tag, you select the
admitAll setting here.
Port 1.4 functions as the uplink port to the next device. It belongs to the
Brown VLAN and is thus assigned VLAN ID 1. It is assigned the admi-
tOnlyVlanTagged setting. Thus only packets with a VLAN tag can be
received by this port.
Activating GVRP, both locally and later globally, ensures the distribution
of the VLAN information. With this information the agents configure the
uplink ports on both ends of the uplink line so that they send the data
packets of the required VLANs via the uplink line.
Activating the Ingress Filter ensures that tags received at this port
are evaluated.
Figure 41: Globally activating GVRP
136
7.6 VLANs
Basic Configuration L2P
Release 4.2 07/08