User's Manual

E–6
PacketMax 100/300 User Manual, 10007306, Rev J
Chapter E. Virtual Local Area Network
E.6 Looping Prevention
The communication between SS and PM 5000 and the communication between SS
and EMS server occurs over the management VLAN. The management traffic des
-
tined to EMS server from SS is sent out only on management port of PM5000 and it
will not be sent out of backhaul port.
Also, if backhaul port receives any management traffic, it will drop it. Hence, if you
try to ping PM5000 (which is in VLAN Mode) using management VLAN ID through
backhaul, it will not work. Ping will work if it is tagged with appropriate management
VLAN ID and it is sent through management port.
NOTE: Base Station Unit and Subscriber Stations need to be configured in the
VLAN Mode to avoid any configuration issues. It is not recommended to run the
base station in the Bridge Mode and Subscriber station in the VLAN Mode. However,
this combination might work but we do not guarantee and Aperto does not support
in this mode.
E.7 Subscriber Station scenarios
There are a few scenarios in which Base Station and Subscriber Station behave and
this depends on the mode they are in. These scenarios are captured in the
Table E-1:
Table E-1 Subscriber Station behavior in different scenarios
Scenario 1
Device Mode Management VLAN
ID
Base Station Bridge Should not be set
Subscriber Station Bridge should not be set
Scenario 2
Device Mode Management VLAN
ID
Base Station VLAN Data is tagged, whether
or not set
Subscriber Station VLAN Data is tagged, whether
or not set
Scenario 3
Device Mode Data Traffic
Base Station N/A N/A
Subscriber Station VLAN See Table E-2
Scenario 4
Device Mode Network Manage-
ment
Base Station N/A N/A
Subscriber Station VLAN No Set-up.
See Table E-3