SW3-L3
GIGABIT/FAST ETHERNET SWITCH/ROUTER TYPE SW3-L3
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USER GUIDE - M0SW3M1902Iv07 - V06 February 2019
•
LAG leader.
For proper operation of the aggregate interfaces, all interfaces
belonging to the same group must match in their configuration parameters. It is
necessary to choose a
Leader
within the group to determine which set of
parameters will be used for all the interfaces included in the group. In case for
multiple selection, the last that is found is taken as Leader, ignoring the rest.
If interfaces are configured as members of a group but none of the interfaces is
selected as Leader of it, the group will not be effective.
Q in Q (Double tagging):
•
S-TAG type.
This parameter allows the user to set up the ‘ethertype’ field to be
used in the service tag or provider, and which allows to identify that a frame
includes double tagging. The default value is 0X88A8 according to the standards.
5.3.2
VLAN
A Virtual Local Area Network (VLAN) corresponds to an independent Ethernet spread
domain. The equipment can create many of these independent domains and can assign
each user ports to one of them. Domains can spread across many switches covering
different floors of a building, different buildings, and remote geographical zones.
Each VLAN is distinguished from the rest by a specific identifier, usually called a
VID
, which
spread in the standard tag specified in the IEEE 802.1q. The tag allows several VLANs to
share resources, including switching devices such as the SW3-L3, or links between
switching units, with the guarantee that the traffic from each VLAN will reach the correct
destination.
The fact that in relation to the equipment, the definition of the VLAN and assigning of the
ports to each one is done based on configuration parameters offers great flexibility, as it is
possible to alter the topology of the VLANs without having to make changes to the
infrastructure.
The SW3-L3 only processes frames with VLAN identifiers that are expressly defined,
regardless of the fact that there are local interfaces assigned to the VLAN defined or not.
