Cisco SGE2000 Configuration Guide - Page 94

Connecting the line ports to the network Chapter 6 Cabling the Line Ports and Completing the Installation - Single Link: Receive-only Topology - Dual Link: Single SCE 2000 Topologies • Dual SCE 2000 topologies (cascaded) - Dual Link: Two SCE 2000s Topology Note When installing a cascaded system, it is extremely important to follow the sequence of procedures outlined in the section Step 1To enter the Global Configuration Mode, at the SCE 2000# prompt, type configure, and press Enter.. Single Link: Inline Topology In the inline topology, the SCE 2000 resides physically on the GBE (Gigabit Ethernet) link between the subscribers, which are usually connected through either a BRAS (in DSL access), a PDSN (in wireless access), a CMTS (in the Cable access), or a switch or router aggregator (in other topologies), and the network, where the SCE 2000 usually connects to a router or layer 3 switch network element. Figure 6-1 Cabling Diagram for Single Link Inline Topology Subscribers 1 Subscribers 2 PWR A PWR B STATUS BYPASS LINK RX TX LINK RX TX Cisco SCE 2000 Series 4xGBE LINK RX TX LINK RX TX RX MM TX RX MM TX GBE-1 SUB LINE NET RX MM TX RX MM TX GBE-2 SUB LINE/CASCADE NET PWR A PWR B STATUS BYPASS LINK RX TX LINK RX TX Cisco SCE 2000 Series 4xGBE LINK RX TX LINK RX TX OR RX MM TX RX MM TX GBE-1 SUB LINE NET RX MM TX RX MM TX GBE-2 SUB LINE/CASCADE NET 92786 Network 1 Network 2 In the single link inline topology, either the first GBE link (first two ports) of the SCE 2000 or the second GBE link (third and fourth ports) can be used, as illustrated in the diagram above. The remaining pair of ports is unused. Either port 1 or port 3 is used for connecting to the network element that is deployed on the subscriber side of the SCE 2000 while port 2 or port 4 is used for connecting to the network element that is deployed on the network side of the SCE 2000 . Inline topology requires both Receive and Transmit fibers. Single Link: Receive-only Topology In this topology, an optical splitter resides physically on the GBE link that the SCE 2000 should monitor. The optical splitter is connected to the SCE 2000 via Rx links only. In this topology, the traffic passes through the optical splitter, which splits traffic to the SCE 2000 . Note Receive-only topologies can also be implemented using a switch. Such a switch must support SPAN functionality that includes separation between ingress and egress traffic and multiple SPAN-ports destinations. Cisco SCE 2000 4xGBE Installation and Configuration Guide 6-2 OL-7824-06