User's Manual

260-668066-003 Rev 002 October 2001 3-5
Eclipse Installation Manual
RAC 6X
RAC 6X adds CCDP operation to RAC 60 capabilities. Two RAC 6X cards are operated
as a CCDP pair, either in the same INU, or in separate co-located INUs to provide
double the capacity over one channel using both the horizontal and vertical
polarizations. An XPIC function between the RACs ensures cross-polarization
interference is eliminated.
Figure 3-4. RAC 6X
DAC GE
DAC GE interfaces three 10/100/1000Base-T electrical ports and one 1000Base-LX
optical port, to one or two transport channels. Features include:
• Advanced QoS settings.
• Transparent, VLAN and mixed modes of operation.
•Enhanced, fast-switched RSTP.
•Layer 1 or Layer 2 link aggregation.
• VLAN tagging.
• DPP and backplane traffic connections.
• Inter-frame gap (IFG) and preamble stripping and re-insertion.
• Frame sizes to 9600 bytes.
• Assignment to radio or fiber links.
• SFP optical port options for 1310nm single or multi-mode, or 850nm multi-mode.
• Compatibility with DAC ES.
Figure 3-5. DAC GE
For DPP traffic a DAC GE must be operated with a RAC 60 or RAC 6X.
DAC ES
DAC ES interfaces four 10/100Base-T Ethernet ports to one or two radio and/or fiber
transport channels. Features include:
• Advanced QoS settings.
• Transparent, VLAN and mixed modes of operation.
• Throughputs to 100 Mbit/s per transport channel.
• Assignment to radio or fiber links.
• Inter-frame gap (IFG) and preamble stripping and re-insertion.
• Compatibility with DAC GE.