Cisco 15454-DS1-14= - 1.544Mbps Expansion Module Spezifikationen PDF herunterladen (Seite 15)

Cisco ONS 15454 Product Overview, R3.3

May 2002

Cisco ONS 15454 Product Overview

Card Protection

Figure 7 Gigabit interface converter

G1000-4 Card

Like the E1000-2 and E1000-2-G cards, the G1000-4 card provides

IEEE-compliant, 1000 Mbps ports for full-duplex operation and requires a GBIC

as its optical interface. However, the G1000-4 has four ports rather than two and

requires the XC10G as its cross-connect card. The additional ports give the ONS

15454 a practical limit of 40 Gigabit Ethernet ports per node. The G1000-4

operates on layer 1 and is used only for point-to-point circuits. OC-48 is the

maximum bandwidth on each G1000-4 card.

Card Protection

The ONS 15454 provides 1:1 and 1:N electrical protection and 1+1 optical

protection methods. This section describes the protection options and explains

protection switching in the ONS 15454. For a description of Ethernet protection,

see the “Spanning Tree Protocol” section on page 32.

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Receiver Transmitter

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