Cisco uBR10-LCP2-MC28C Manual de usuario descargar pdf (Pagina 2)

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The Cisco RF Switch provides maximum reliability for the Cisco uBR10012. See Figure 2. The Cisco uBR10012 contains seven active

line cards and one standby line card.

Figure 2. N+1 Redundancy on the Cisco uBR10012

The Cisco RF Switch also enables a fully redundant N+1 system configuration for the Cisco uBR7246VXR. See Figure 3.

Figure 3. N+1 Redundancy on the Cisco uBR7246VXR

With Cisco IOS

Software, each Cisco RF Switch delivers redundancy by sharing configuration and state information from "working" line

cards to "protect" line cards. If a working line card fails, a protect line card assumes traffic responsibilities. The Cisco Hot Standby

Connection-to-Connection Protocol (HCCP) maintains all necessary DOCSIS or Euro-DOCSIS state information-including service

identifier (SID), service flow, and Media Access Control (MAC) and IP information that enable a standby line card to completely replace

an active card when needed. HCCP automatically detects:

• Software or hardware failure, including an external upconverter failure

• Cable wiring failures

• Interface shutdowns

• Line card online insertion and removal (OIR)

• Manual switchover

The Cisco uBR system controls the Cisco RF Switch and external upconverters through Simple Network Management Protocol (SNMP)

messages that switch the upstream or downstream frequency on a protect line card as needed. The Cisco RF Switch also offers an SNMP

Ethernet interface that allows operators to control the unit without a Cisco uBR10012 or uBR7246VXR.

An external RF switch (instead of a line card with internal wiring that would operate as an RF switch) better addresses future scalability.

The external Cisco uBR 3x10 RF Switch can be stacked and used for multiple scenarios and different densities. The external design allows

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Cisco uBR10-LCP2-MC28C Manual de usuario Pagina 2