RUGGEDCOM ROX II
User Guide
Chapter 3
Device Management
Adding an Ethernet Trunk Interface 137
Parameter Description
mtu Default: 1500
Maximum transmission unit (largest packet size allowed for this interface).
alias The SNMP alias name of the interface
6. On the Multicast Filtering form, configure the following parameter(s) as required:
Parameter Description
GMRP Synopsis: advertise_only, learn_advertise
GMRP (GARP Multicast Registration Protocol) operation on the port. There are several
GMRP operation modes:
• DISABLED : the port is not capable of any GMRP processing.
• ADVERTISE ONLY : the port will declare all MCAST addresses existing in the switch
(configured or learned) but will not learn any MCAST addresses.
• ADVERTISE and LEARN : the port will declare all MCAST Addresses existing in the
switch (configured or learned) and can dynamically learn MCAST addresses.
7. On the CoS form, configure the following parameter(s) as required:
Parameter Description
Default Priority Default: 0
The priority of frames received on this port that are not prioritized based on the frame's
contents (e.g. priority field in the VLAN tag, DiffServ field in the IP header, prioritized
MAC address).
Inspect ToS Enables or disables parsing of the Type-Of-Service (TOS) field in the IP header of the
received frames to determine what Class of Service they should be assigned. When
TOS parsing is enabled the switch will use the Differentiated Services bits in the TOS
field.
8. On the VLAN form, configure the following parameter(s) as required:
Parameter Description
PVID The Port VLAN Identifier specifies the VLAN ID associated with untagged (and 802.1p
priority tagged) frames received on this port. Frames tagged with a non-zero VLAN ID
will always be associated with the VLAN ID retrieved from the frame tag.
Type Synopsis: edge, trunk, pvlanedge
Default: edge
How the port determines its membership in VLANs. There are the following port types:
• EDGE : the port is only a member of one VLAN (its native VLAN specified by
the'PVID' parameter).
• PVLAN Edge : the port does not forward traffic to other PVLAN edge ports within the
same VLAN.
• TRUNK : the port is automatically a member of all configured VLANs. Frames
transmitted out of the port on all VLANs except the port's native VLAN will be always
tagged. It can also be configured to use GVRP for automatic VLANconfiguration.
Format Synopsis: untagged, tagged
Default: untagged
Whether frames transmitted out of the port on its native VLAN(specified by the 'PVID'
parameter) will be tagged or untagged.
GVRP Mode Synopsis: advertise_only, learn_advertise
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