Alcatel-Lucent 7750 SR manual Key Features, SR vs. Internet-era Routers

Key Features

The Alcatel-Lucent 7750 SR delivers the features that service providers need to offer a new generation of highly profitable media- rich services. The service orientation of the Alcatel-Lucent 7750 SR means that all the features are designed around the concept of

a service, whereas existing routers and switches were designed around physical interfaces. This fundamental difference in architecture and design separates the Alcatel-Lucent 7750 SR from other vendors’ routers.

Table 1. The 7750 SR vs. Internet-era Routers

	Internet-era Router	Alcatel-Lucent 7750 SR
Architecture and	Repurposed core router, positioned as edge platform	Purpose-built portfolio
system characteristics

Architecture optimized for low fan-out “fat pipe” forwarding

ASIC-based architecture results in costly proliferation

of specialized service modules: results in exponential CAPEX, slot exhaustion, and low feature velocity

Substandard, unpredictable delay/jitter and loss characteristics

Known packet re-ordering issues

Inadequate for media-rich voice and video deployments

Highly-available hardware and software architecture built to exceed stringent SP requirements

Flexible Fast Path architecture combines high performance and flexibility

Scales service instances, subscriber count and bandwidth with uncompromised performance

Optimal delay/jitter characteristics

Density/flexibility in form factor

QoS	“Coarse” QoS implementation	Unique hierarchical QoS capabilities are ideally suited for triple-play
		deployment
	Static QoS implementation, inadequate for voice and video applications
		Highly scalable QoS implementation scales to tens of thousands of
	Low queue count results in queue depletion and forced costly upgrade	subscribers: 16,000+ queues available per interface slot
	to enhanced line cards
Routing	Good support	Leading high-availability routing capabilities
	No high-availability routing	Leading all-around routing scalability
	Service deployments result in costly service module proliferation:	Leading service scale
Services	maximized cumulative CAPEX
		Unique ability to scale Layer 2 and Layer 3 services within one
	Cannot scale services across all dimensions without forced compromise	platform: 11,000+ concurrent active service instances per chassis
	Cannot scale Layer 2 and Layer 3 services concurrently	Flexible Fast Path architecture scales service instances, subscriber
		count and bandwidth with uncompromised performance
	Non-scalable proprietary VPLS implementation

8 Alcatel-Lucent 7750 Service Router