Cisco SCE 1000 2xGBE User's Guide download pdf (Page 39)

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Chapter 2 Topology

Functionality

SCE 1000 2xGBE Release 2.0.10 User Guide

OL-7117-02 2-3

• Forwarding: This is the normal operational mode, in which the SCE 1000 processes the

traffic for monitoring and control purposes.

• Sniffing: The bypass mechanism preserves the network link, while in parallel allowing the

SCE 1000 to process the traffic for monitoring only.

• Cutoff: There is no forwarding of traffic, and the physical link is forced down (cutoff

functionality at layer 1).

Functionality

The SCE 1000 can serve one of two general functions:

• Monitoring and Control: The SCE 1000 monitors and controls traffic flow. Decisions are

enforced by the SCE 1000 depending on the results of the monitoring functions of the SCE

1000 and the configuration of the Service Control Application for Broadband or Mobile

solution.

In order to perform control functions, the SCE 1000 must be physically installed as a bump-

in-the-wire, and the connection mode must be “Inline”.

• Monitoring only: The SCE 1000 monitors traffic flow, but cannot control it.

Either a bump-in-the-wire installation or an optical splitter installation may be used for

monitoring only. In the latter case connection mode must be “receive-only”.

Physical Installation

There are two options for the physical installation configuration of the SCE 1000 Platform:

• Inline installation (provides control functionality).

• Out-of-line installation utilizing an external optical splitte

The physical installation determines the connection mode that should be configured.

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Cisco SCE 1000 2xGBE User's Guide Page 39

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