Alcatel-Lucent 9500 MXC User Manual page 440

Chapter 7. Node and Terminal Plug-ins
2
DAC ES supports a maximum 112 circuit connections to the backplane bus (2 Mbps or 1.5 Mbps
circuits), which for DS1 / 1.5 Mbps operation means that while one channel can be set for its maximum
65xDS1 / 100 Mbps, only 112xDS1 / 173 Mbps can be shared between channels when both C1 and C2
are selected.
Vol. IV-7-50
• The sum of the C1 and C2 capacities cannot exceed 112xDS1
• For ring operation the maximum supported by a single DAC ES using C1
and C2 is 56xDS1 west and 56xDS1 east (or any other east/west C1 and C2
capacity combination up to a total of 112xDS1 / 86 Mbps).
• C1 and C2 can be configured for same-link operation. With a RAC 30, RAC
3X or RAC 40, the sum of the C1 and C2 capacities cannot exceed the
100xDS1 / 154 Mbps RAC/Link maximums.
NxDS1 selection: IDU ES
• The maximum C1 or C2 capacity is 65xDS1 (100.3 Mbps).
• C1 and C2 can both be configured for same-link operation up to total
combined capacity of 127xDS1 (196 Mbps).
The capacity(s) must be set within the maximum for the link (RAC/Licence)
capacity, and take into account any capacity to be assigned to parallel NxE1 (or
NxDS1) channels over the same path.
4. : Select Transparent, Mixed or VLAN mode of operation
Operational Mode
for the Ethernet bridging-switching function.
• is the default, broadcast mode; all ports and channels are
Transparent
interconnected. It supports four customer connections (Ports 1 to 4) with
bridging to two separate channels (C1 or C2). Where a single path (link) is
used select only C1 (or C2) to avoid a traffic-loop. On the DAC ES C1 and
C2 may be used to support two star or ring links where each channel is
assigned to its own RAC (or RAC and DAC 155oM). It is particularly
applicable to ring networks using 9500 MXC ring-wrap protection, with
one channel assigned to the east, the other to the west.
Transparent Mode
Figure 7-13.
• Mode provides a two-channel VLAN/broadcast solution where
Mixed
VLAN P1-C1 provides dedicated transport for high priority, Port 1 traffic.
A second transparent, broadcast mode connection is provided with Ports 1,
2 and 3 and C2 interconnected. The two channels can be assigned on the
2
/ 173 Mbps.
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