9500 MXC User Manual
3DB 23063 ADAA - Rev 004 July 2007 Vol. II-6-5
• Traffic can be configured to ride side-by-side with E1 or DS1 traffic.
DAC GE
• DAC GE supports one or two transport channels with capacities selected in
multiples of 2 Mbps, 1.5 Mbps, or 150 Mbps.
• For Nx2 Mbps or Nx1.5 Mbps selections, a maximum of 200 Mbps is
supported on one channel, or 200 Mbps total using both channels.
• For Nx150 Mbps, channel capacity selections support 150 Mbps on each
channel, or 300 Mbps on one channel.
• Options include selection of transparent, VLAN or mixed-mode operation, QoS
traffic policing and prioritization, RWPR
TM
, link aggregation, and VLAN
tagging.
• RWPR delivers enhanced RSTP (Rapid Spanning Tree Protocol), but
whereas RSTP re-convergence times are typically between 1 to 5 seconds,
RWPR times are as low as 50 milliseconds.
• The same RWPR fast-switch capability is also used to optimize layer 2 link
aggregation, when traffic from a failed link is switched to share the
bandwidth available on the remaining link or links.
• Ethernet traffic can be configured to ride side-by-side with E1 or DS1 traffic.
• Using L2 (layer 2) link aggregation multiple Nodes may be co-located to
support virtual link configurations with throughputs to 1000 Mbps.
• L1 (layer 1) link aggregation is also available, which has particular relevance
for 300 Mbps router-to-router connections on parallel-path 150 Mbps links.
Co-channel XPIC
Co-channel operation (CCDP) allows two links to operate on different
polarizations over the same radio path and on the same frequency, to provide
double the capacity of a normal link, and only occupy one radio channel. XPIC
enhances polarization discrimination between the vertical and horizontal radio
paths.
RAC 40 supports capacities to 75xE1, 100xDS1, 1xSTM1/OC3, or 150 Mbps
Ethernet per link. Together, the paired RAC 40s support up to 150xE1, 300xDS1,
2xSTM1/OC3 or 300 Mbps Ethernet on the same 28 MHz or 30 MHz radio
channel.
Auxiliary Data and Alarm I/O
The Node supports six 64 kbps synchronous, or 19.2 kbps (1.2 to 19.2 kbps)
asynchronous auxiliary data channels per link, plus an alarm I/O capability. The
alarm I/O supports up to six TTL alarm inputs and 4 Form C relay outputs per
AUX plug-in.
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