User guide

Overview

The Radiance 1000Mbps redundant interface line card offers the resiliency

of data link redundancy to ensure network integrity with no down time. This

link duplication provides the nonstop networking capability essential for high

priority traffic and mission-critical applications. The Radiance redundant

interface line card provides full redundant data paths for Gigabit Ethernet

devices. The card also provides 1000Base copper-to-fiber migration.

The redundant line card actively monitors the primary link and if it fails,

automatically activates the secondary link without interruption to network

operation. Every redundant line card also features SONAR (Switch On No

Activity Received). With SONAR enabled, the card provides protection against

loss of data activity in addition to link integrity.

Management control over the Radiance redundant interface line card allows the

network administrator to monitor and configure the card via a PC through

console commands, Metrobility’s NetBeacon

™

or WebBeacon

™

management

software, or any SNMP application.

The Radiance 1000Mbps redundant interface line card includes the following

features:

• Can be configured to operate in Dynamic Recovery Mode (DRM) to ensure

session integrity and increased uptime.

• Can be configured to operate in Network Select Mode (NSM) to redirect

and isolate traffic adding extra security.

• Immediately switches from the primary port to the secondary port if the

primary link fails.

• In addition to switching on loss of link, the card can be configured to switch

on loss of data (SONAR).

• Full signal retiming, reshaping and re-amplification, thus allowing the

maximum segment length.

• Fast failover time (750 ms for the R752-11, and 672 ns for the R752-1S and

R752-SS) for low packet/frame loss.

• A maximum loss of 1-2 packets (measured with minimum packet size and

minimum inter-packet gap) due to failover transition.