Nokia SRA Composite case studies
Nokia SRA Composite · Put your knowledge to work in context.
The Nokia SRA Composite is an independent study target for networking professionals who want a single credential that spans the breadth of Nokia's portfolio rather than a single product line. Nokia describes its certification programs as building technical expertise and enhancing professional standing, and its solutions portfolio as covering fixed, mobile and transport networks, so a composite-style exam naturally reaches across those areas. The Nokia SRA Composite case studies are 5 cases and about 3,637 words.
1GPON shelf upgrade: 1:64 re-split versus XGS-PON optics
An operator runs a 7360 ISAM FX in a suburb with four GPON line cards, 1:32 splitters and 3,800 residential subscribers. Two cards reach 85–92% downstream utilisation between 20:00 and 22:30, driven by 4K streaming and work-from-home uploads; upstream peaks at 70%.
734 words, about 4 min2Stadium 5G uplink: frame change versus coverage fix
A 60,000-seat stadium is covered by a Nokia AirScale macro layer: three LTE carriers on 1800 and 2100 MHz (20 MHz each, 4×4 MIMO) and 12 rooflop 3.5 GHz massive-MIMO AAUs (64T64R, 100 MHz TDD). At the last match downlink peaked at 4.2 Gbit/s venue-wide, but uplink drove complaints: 22% of attendees uploaded video, cell-edge users saw 0.8 Mbit/s with a 65 ms 99th-percentile latency.
734 words, about 4 min3Microwave chain availability and protection on a rural backhaul
A regional operator backhauls 14 rural 4G/5G sites over a seven-hop Nokia 9500 MPR microwave chain. Hops are 8–14 km at 15/18 GHz with 56 MHz channels.
736 words, about 4 min4SR-MPLS migration on an LDP/RSVP network with an SRv6 pilot
A 10-year-old MPLS network has 42 PE and 180 P routers on 7750 SR and 7250 IXR, running LDP for service labels plus 30 manually provisioned RSVP-TE tunnels. A new SLA requires TI-LFA repair within 50 ms for any single link or node failure.
719 words, about 4 min5Automated VPN change blows up: blast radius and BGP containment
An enterprise customer has 320 sites on an L3VPN delivered by a pair of 7750 SR PEs, with provisioning automated through Nokia NSP. A change window added 40 sites using a template; the route policy that constrained import and export was omitted.
714 words, about 4 min