User's Manual

18 MDS Mercury 16E Technical Manual MDS 05-6302A01, Rev. B
The Management VLAN IP address allows administrators to manage
the transceiver using the usual networked interfaces, such as Web,
telnet, and SNMP. Those services are only available through the
Management VLAN IP address while VLAN is enabled. The
Management VLAN IP Address settings are configured under the
MGMT VLAN Subnet Configuration Menu or the IP Address section
on the web page.
The Serial VLAN IP address allows SCADA networks to connect to the
Serial Terminal Server on the transceiver. The terminal server provides
access to the transceiver's local COM port so IP networks can utilize
serial devices. The terminal server is only available through the Serial
VLAN IP address while VLAN is enabled. The Serial VLAN IP
Address settings are configured under the Serial VLAN Subnet
Configuration Menu or the Serial VLAN IP Address section on the web
page.
When configuring VLAN, Ids must be assigned to the Management
VLAN, Serial VLAN, LAN 1 Port and LAN 2 Port. The Management
VLAN ID and Serial VLAN ID cannot be the same value.
The Wi-Fi VLAN is available on subscribers and ODU units that have
802.11 Wi-Fi. In order to use the Wi-Fi VLAN, the 802.11 Mode must
be set to Access Point. The Wi-Fi VLAN may share a VLAN ID with the
Serial VLAN. In this case, the Wi-Fi interface is part of the Serial
VLAN and shares the Serial VLAN’s IP address. If the Wi-Fi VLAN is
given a unique VLAN ID, it operates as a third, separate VLAN and can
be configured with its own IP address under the Wi-Fi VLAN Subnet
Configuration menu on the web page.
The VLAN Ethport Mode parameter determines how IP frames are
handled with respect to VLAN tagging. When the mode is set to Access,
a VLAN tag is added to IP frames that are received on that Ethernet port.
In the case of the LAN 1 port, the LAN 1 VLAN ID would be added to
the frame prior to forwarding the frame over-the-air. Likewise, the tag
is removed from the IP frame for traffic that is going to be transmitted
out of the Ethernet port. This is the mode that is most likely to be used
on Subscribers where the LAN connected to the subscriber is
non-VLAN and it would be tagged before it reaches the Base Station.
When the VLAN Ethport Mode is set to Trunk, IP frames received from
the Ethernet port are not automatically tagged. It is assumed that the
LAN that is connected to the Ethport is already tagged with VLAN Ids.
This mode is most likely to be used on Base Stations where the network
connected to the Base Station Ethports are VLAN aware.
The last mode for VLAN Ethport Mode is Auto, where the Subscriber
or Base Station can automatically determine whether or not to tag
frames based on the traffic it receives.