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Key Features
The
a service, whereas existing routers and switches were designed around physical interfaces. This fundamental difference in architecture and design separates the
Table 1. The 7750 SR vs. Internet-era Routers
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Architecture and | Repurposed core router, positioned as edge platform | |
system characteristics |
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Architecture optimized for low
of specialized service modules: results in exponential CAPEX, slot exhaustion, and low feature velocity
Substandard, unpredictable delay/jitter and loss characteristics
Known packet
Inadequate for
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 |
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| deployment |
| Static QoS implementation, inadequate for voice and video applications |
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| 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 |
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Routing | Good support | Leading |
| No | Leading |
| Service deployments result in costly service module proliferation: | Leading service scale |
Services | maximized cumulative CAPEX |
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| 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 |
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| count and bandwidth with uncompromised performance |
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