Alcatel-Lucent 7750 Network Router User Manual


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Alcatel-Lucent 7750 Service Router | Data Sheet2
• Supportsbytefairnesstoensure
bandwidthisscheduledequally
between flows of same-priority traffic
with wide variations in packet size
• Deliversanexpandedsetofcounters
for each subscriber context, totaling
16setswitheachcounterset,tracking
stats such as:
¬ Discarded low-priority packets
and octets
¬ Discarded high-priority packets
and octets
¬ Forwarded low-priority packets
and octets
¬ Forwarded high-priority packets
and octets
• Providesadditionalcapabilitiesfor
managing congestion through egress
802.1p bit re-marking, based on the
committed information rate (CIR) state
• Supportsingressqueue(color-aware)
policing where a CIR leaky-bucket is
configured with a threshold:
¬ Discards all packets that exceed
this CIR threshold
¬OffersanalternativetousingPIR
shaping with maximum burst size
(MBS) where eliminating jitter is
important
• SupportsaCIRbypass-modewhen
usingingressqueuepolicing,allowing
packets with trusted markings to
ignore the CIR processing. PIR
processing will still be enforced:
¬ Forwards packets with un-trusted
markings with the usual CIR and
PIR processing enforcements
¬ Ensures that trusted packets enjoy
preferential treatment when CIR is
a factor
Benefits
The HS-MDA is ideal for large-scale
servicedeploymentsrequiringhigh
scale, high density and fine granularity
ofqueues.Thebenetsofenhancing
the 7750 SR with the HS-MDA include:
• Delivershighqueuingdensities,the
equivalentof19.2millionqueuesper
rack, reducing demand on scarce and
costly facility space within central
ofces(COs)
• AllowsmultipleHS-MDAstobeexibly
deployedasandwhererequired,
creating an on-demand and service-
rich operating environment fully
interoperable with other MDA-types
• Ensuresendusersenjoythehighest
qualityofexperience(QoE)bybeing
fully integrated with the depth and
breadth of all service-rich 7750 SR
capabilities
• OffersserviceprovidersaBroadband
Remote Access Server (BRAS) replace-
ment plan that, combined with other
7750 SR features and functions,
leverages investment in a strategic
next-generation IP/MPLS and Carrier
Ethernet service edge to consolidate
legacy high-speed Internet (HSI)
services and subscriber authentication
• Providesserviceproviderswiththe
scale,densityandqueuinggranularity
toembraceemergingservicerequire-
ments for mass-market residential,
business and mobile offerings,
including those delivered in conjunc-
tion with the Alcatel-Lucent Applica-
tion Assurance Integrated Service
Adapter (AA-ISA) for application-
based policy
Table 1. SFPs available for the HS-MDA
PART NUMBER INTERFACE TYPE SUBTYPE CONNECTOR FIBER TYPE WAVELENGTH POWER RANGE
3HE00028AA GigE SFP LX SFP-LC Single mode 1310 nm 11 dB 10 km
3HE00027AA GigE SFP SX SFP-LC Multimode 850 nm 7.5 dB 550 m
3HE00867AA GigE SFP EX SFP-LC Single mode 1310 nm 18 dB 40 km
3HE00029AA GigE SFP ZX SFP-LC Single mode 1550 nm 24 dB 70 km
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