Nera WiLink-I 3000, System Manual, Page: 176 / 250

156 Operation
Chapter 4 - Operation and Administration
1
Transparent Marking Mode (No Priority Marking): In this case, the system
should forward the frames to the uplink network without any changes.
If 802.1p classification is used at the SU, the frames will be transmitted to the
operator's network according to the following rules:
¯
If VLAN Transparency Mode is Off, the frames will be forwarded with their
original 802.1p value and the configured VPL ID. If no VPL ID is configured
(VPL ID = Null), the 802.1p tags will not be forwarded.
¯
If VLAN Transparency Mode is On, the frames will be forwarded without
any change (with the original 802.1p value and VLAN ID, if exists).
For DSCP classification at the SU:
¯
If the VPL ID is configured (VLAN Transparency Mode Off), the NPU adds
an 802.1Q header with the configured VPL ID and 802.1p=0.
¯
If VLAN Transparency Mode is On, The NPU adds a 802.1Q header with the
original VLAN ID (if exists).
Note that there may be a disparity between the DSCP values and the default
802.1p = 0 value.
2
802.1p Marking Mode:
¯ If VLAN Transparency Mode is Off, all frames are marked with the
configured VPL ID and the 802.1p Marking Value. If no VPL ID is
configured (VPL ID = None), the 802.1Q header will include a VLAN ID = 0.
¯
If VLAN Transparency Mode is On, all frames are marked with the original
VLAN ID and the 802.1p Marking Value.
¯
If 802.1p classification is used at the SU, the original 802.1p tags are
replaced by the configured 802.1p Marking Value.
¯ If DSCP classification is used at the SU, an 802.1Q header is added, with
the configured VPL ID (if VLAN Transparency Mode is Off) or the original
VLAN ID (if VLAN Transparency Mode is On), and the 802.1p Marking
Value. The original DSCP bits are kept.
NOTE
If the Priority Marking Value is set to 0, untagged packets (without VLAN ID) will be forwarded
without any change. This is applicable to transparent services and to to non-transparent services
with no VPL ID.