Single Link: Inline Topology; Single Link: Receive-Only Topology; C H A P T E R 6 Cabling The Line Ports And Completing The Installation; Dual Link: Single Cisco Sce8000 Topologies - Cisco SCE8000 Installation And Configuration Manual

Connecting the Line Ports to the Network

Single Link: Inline Topology

In the inline topology, the Cisco SCE8000 resides physically on the 10 GBE (Ten Gigabit Ethernet) link
between the subscribers and the network. The subscribers 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). The network is a router or layer 3 switch network element connecting
the Cisco SCE8000 towards the core of the network.
Guidelines for single link inline topologies
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Single link inline connectivity
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Single Link: Receive-only Topology

In this topology, an optical splitter unit resides physically on the 10 GBE link that the Cisco SCE8000
should monitor. The optical splitter unit is connected to the Cisco SCE8000 Rx links only. For each link
monitored, there will be two Rx connections to the Cisco SCE8000, one for each direction of traffic flow
in the link. The traffic passes through the optical splitter, which allows the Cisco SCE8000 to monitor
traffic without affecting the normal optic and data path between subscriber and network.
Receive-only topologies can also be implemented using a switch. Such a switch must support SPAN
Note
functionality that includes separation between ingress and egress traffic and multiple SPAN-ports
destinations.
Guidelines for single link receive-only topologies:
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Single link receive-only connectivity
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Dual Link: Single Cisco SCE8000 Topologies

In this topology, one Cisco SCE8000 is connected to two full duplex, 10GBE links. The Cisco SCE8000
may be either inline, to support both monitoring and traffic control functionality, or receive-only for
traffic monitoring functionality only.
Guidelines for dual link topologies:
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Cisco SCE8000 Installation and Configuration Guide, Rel 3.1.7
6-2
If only two SPA modules are installed (only two SPA modules are required for a single link), they
must be installed in bays 0 and 1 of the SPA jacket card.
Inline topologies require both Receive and Transmit fibers.
To maintain link continuity at all times, an optical bypass module should be installed.
Port 3/0/0: Link 0, Subscribers side
Port 3/1/0: Link 0, Network side
If only two SPA modules are installed (only two SPA modules are required for a single link), they
must be installed in bays 0 and 1 of the SPA jacket card.
Receive-only topologies use only Receive fibers.
Port 3/0/0: Link 0, Split of optic signal transmitted by subscribers side
Port 3/1/0: Link 0, Split of optic signal transmitted by network side
SPA modules 0 and 1 are connected to the first link (Link 0)
SPA modules 2 and 3 are connected to the second link (Link 1)
Chapter 6 Cabling the Line Ports and Completing the Installation
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