Full Outdoor 2+0 XPIC IP Link
Page 25 of 39
Version
1.0
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access – Port is a member of just one untagged VLAN defined with Default VLAN for the port. Only
such ingressed untagged packets are accepted, whose VLAN number (VID), which is assigned from port's
Default VLAN, exist in VTU table. Frames are transmitted untagged and they are allowed to exit only those
ports that are members of the frame's VLAN and are inside the same group.
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trunk – Port can be a member of more tagged VLANs (VID extracted from VLAN tag) and one un-
tagged VLAN defined with Default VLAN for such port. Only such frames are accepted, whose VLAN number
(assigned from VLAN tag or port's Default VLAN) exists in VTU table and Ingress port is member of VLAN.
Frames are transmitted untagged or tagged according to the specification in VTU record for each
port/VLAN and they are allowed to exit only those ports that are members of the frame's VLAN and are in-
side the same group.
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hybrid – When frame's VLAN number exists in VTU table the rules for trunk port are used, when the
number does not exist then the basic rules are applied.
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Port Group – This parameter defines a separate MAC address table domains inside the internal
switch and defines also the group of ports which can communicate to each other. Only the ports from the
same group can communicate with one another. The other ports are completely isolated. It is possible that
isolated networks (different groups) can use the same MAC addresses without any collision in the internal
ETH switch ATU table.
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Default VLAN – This parameter is configured automatically depending on records in the VTU table.
Default VLAN is updated for the port which is marked as untagged in the VTU record. VLAN No.1 can not be
added into VTU table and it is just fictive VLAN for internal purposes. The port cannot be configured into
access mode when Default VLAN of this port is 1. When Default VLAN value for the trunk port is 1, then the
port accepts tagged frames only.
VTU SETTINGS
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ACTION – It adds or removes VTU records. A VTU record can not be removed when contains un-
tagged port which is configured into access mode. Just simple VLAN NO. specification is required for VTU
record erase.
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VLAN N. – The VLAN number of edited VLAN (added or deleted). Every VLAN can be defined for on-
ly one Port Group, multiple records of the same VLAN for more groups is not allowed.
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GROUP – It defines the port Group for which is VLAN edited.
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QOS PRI – When VTU override mode is selected then the QOS priority value of original frame is
overridden. This configuration has influence only on the internal frame processing by means of queue con-
troller (QPRI defined by OQPRI instead of IQPRI bits), but frames are still egressed with the initial priority
assignment (FPRI is without any change).
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LAN 1-WAN P – It defines VLAN mode for each port in configured VLAN.
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Deny – Port is not a member of edited VLAN. Ports which are defined in different Groups should be
set into this mode.
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Untag – Port is a member of edited VLAN as untagged.
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