METRODATA LTD
WCM1400/WCM1800/WCM1820
Quick Start Guide
76-02-087 Rev D
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In this application, WCM1800-A is connected to a VLAN enabled LAN switch. The LAN
switch is configured as a VLAN trunk and all packets are tagged with VLAN Tags.
WCM1800-A is operating with VLAN support disabled, but with a VLAN ID allocated to the
Manager. In this way, the management VLAN, in this case 101, can be used to manage
the WCM1800. WCM1800-B is configured with VLAN support enabled and thus each port
is isolated to a single VLAN.
2.3 WCM1800 VLAN Access Mode
In this mode, both WCM1800 units have VLAN support enabled. VLAN 101 is used as the
management VLAN and in unit WCM1800-A the VLAN group 101 includes the LAN Port 1,
the Manager and the E1 port. At the remote end, Port 1 is disabled to prevent customer
access to the WCM1800 manager.
2.4 WCM1800 S-Tag Mode
In this mode, the WCM1800 adds a, port based, S-TAG to all incoming traffic. Where
customer traffic is already VLAN tagged, this leads to double tagging or ‘QinQ’ operation.
The use of the S-TAG enables the carrier to isolate customer traffic. Carrier management
traffic is carried with a separate S-Tag giving management access to both units, and on
the customer site the external management access is disabled.
