9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. II-3-59
VLAN Mode
VLAN Mode supports four separate LANs. LAN 1 is the same as for Mixed
Mode, where dedicated transport is provided for port 1 traffic. For ports 2, 3 and
4, three separate (virtual) LANs (VLANs 2, 3 and 4) are multiplexed to C2, with
internal tagging of the packets ensuring correct end-to-end matching of LANs
over the link.
Figure 3-40. VLAN Mode Port and Channel Assignment
Normally the two channels would be assigned on the same path, but they may be
used to support east and west paths in a ring network using an external RSTP
switch, where C1 is assigned to one direction and C2 to the other.
DAC GE Transport Channels
Channel Type
Channel type is selected for 2 Mbps, 1.5 Mbps or 150 Mbps.
• With a 2 Mbps or 1.5 Mbps backplane selected, DAC GE is compatible with
DAC ES (DAC GE at one end of the link and DAC ES at the other.
• With 2 Mbps or 1.5 Mbps backplane selected, DAC GE traffic can be mapped
to a RAC, or to a DAC 155oM for a fiber link.
• A RAC 30 or RAC 40 supports throughputs to 150 Mbps
• A RAC 3X supports throughputs to 200 Mbps
• The DAC 155oM supports throughputs to130 Mbps
• With 150 Mbps backplane selected, DAC GE traffic can only be mapped to a
RAC 30 or RAC 40 for 150 Mbps, or to a RAC 3X for 300 Mbps.
Channel Capacity
4
Channel capacity is selected on a per-channel basis (C1, C2):
• Channel capacity provides selection of one or two transport (link) channels.
• The maximum assignable capacities
5
for one channel or over both channels are:
4
Nominal capacities are generally used to represent Ethernet capacities, for example the maximum
assignable capacity of 204.8 Mbps (100x 2.048 Mbps) is shown as 200 Mbps.
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