Hirschmann RS20 Reference Manual page 122

Switching
Parameters Meaning
VLAN 0 When the VLAN 0 Transparent Mode
Transparent Mode is activated, the device accepts a
VLAN ID of 0 in the packet when it
receives it, regardless of the setting for
the port VLAN ID in the dialog
page 130
Activate "VLAN 0 Transparent Mode"
to transmit packets with a priority TAG
without VLAN membership, i.e. with a
VLAN ID of 0.
Double VLAN Tag Defines the value of the outer VLAN
Ethertype tag which a core port uses when
sending a frame.
The selectable values have the
following meaning:
–
–
Note: This setting is only effective for a
core port. Access ports and normal
ports ignore this setting and always
use 8100
Table 74: VLAN settings
Note: If you are using the GOOSE protocol in accordance with IEC61850-8-
1, then you activate the "VLAN 0 transparent mode". In this way, the
prioritizing information remains in the data packet in accordance with
IEEE802.1D/p when the device forwards the data packet.
This also applies to other protocols that use this prioritizing in accordance
with IEEE 802.1D/p, but do not require any VLANs according to
IEEE 802.1Q.
Note: When using the "Transparent Mode" in this way, note the following:
 For RS20/RS30/RS40, MS20/MS30, RSR20/RSR30, MACH 100,
MACH 1000 and OCTOPUS:
In "Transparent mode", the devices ignore the port VLAN ID set. Set the
VLAN membership of the ports of VLAN 1 to U (Untagged) or T (Tagged),
(see on page 127 "VLAN
122
"Port").
0x8100 (802.1Q): VLAN tag
0x88A8 (vman): Provider Bridging
H
Static").
Possible values Default setting
On, Off
(see on
0 - 65535
4.5 VLAN
Off
33024 (8100 )
H
RM GUI L2E
Release 8.0 05/2013