Ethernet bridging Chapter 1: Product description
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phn-2513_004v000 (Oct 2012)
VLAN membership
The management agent can be configured to transmit and receive either untagged,
priority-tagged, C-tagged (IEEE 802.1Q) or S-tagged (IEEE 801.ad) frames. S-tagged
frames must be single tagged, in other words, an S-tag with no encapsulated C-tag. The
VLAN ID can be 0 (priority tagged) or in the range 1 to 4094.
Out-of-band management
PTP 800 supports an end-to-end out-of-band management mode in which the management
agent can be reached from the management port at the local CMU, and (assuming that the
wireless link is established) the management port at the remote CMU. This management
mode allows communication from the CMU management port to Ethernet end stations
reached through the remote CMU, supporting construction of an extended management
network that is isolated from the customer network.
End-to-end out-of-band management is possible only when the network management mode
is configured to “out-of-band” at every CMU.
Out-of-band quality of service
Out-of-band management traffic is forwarded over the wireless link using a dedicated
channel. The management channel represents a single traffic class, and the same quality
of service is afforded to all management frames. Traffic in the management channel is
fragmented for transmission over the wireless link to minimize the jitter imposed on high
priority traffic in the customer network.
The management channel has higher priority than traffic in the customer network, subject
to a configurable committed information rate (CIR) with a range between 200 Kbit/s and 2
Mbps. Committed capacity that remains unused by management traffic is available for
customer traffic.
Out-of-band local management
The out-of-band local management mode is similar to the standard out-of-band mode,
except that management frames are not forwarded over the wireless link. Connection to
the management agent is solely through the management port of the local CMU. The
management channel CIR control is disabled in out-of-band local mode.
Out-of-band local management is the default management mode.
If the management port is not accessible remotely, this mode should be changed to permit
remote management.
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