Specifications

Watson-Ethernet-Manual.doc
Version 3.3-01
Watson Ethernet
Operating Manual
Revision: 2010-01-20
3-25
3.5.4 Management VLAN configuration
The Watson Ethernet plug-in modems support Ethernet inband management, i.e.
it is possible to manage the modems through the Ethernet user interfaces or
through the Ethernet payload carried over the DSL.
Ethernet inband management traffic is always routed through the internal man-
agement port MGMT3 that connects the plug-in controller to the Ethernet bridge.
To configure Ethernet inband management and to isolate management traffic
from user traffic a dedicated management VLAN has to be set up. By default the
MGMT3 port is member of VLAN 4094, but it is possible to use a VID different
from 4094 for management traffic.
To access MGMT3 from a user interface this user interface (ETH1 .. ETH4) has
to be member of the management VLAN. To access MGMT3 through the DSL
Ethernet payload the corresponding DSL span (DSL1 .. DSL4) has to be member
of the management VLAN.
3.5.5 Transparent bridging with inband management
The Watson Ethernet plug-in supports a special bridging mode that allows for in-
band management in combination with transparent bridging. This bridging mode
uses stacked VLAN tags for packets from the Ethernet user interfaces and sin-
gle-tagged packets for management information on the DSL interfaces:
Figure 3-19: Transparent bridging with inband management
Management packets ingressing at the Q interface of the Central Office are
routed to port MGMT3 of the management controller. There they are tagged with
the default VLAN tag m and are sent as single-tagged packets over the DSL to
the Watson Ethernet plug-in at the Customer side.