Metro Ethernet aggregation routers for rings and EVPN services
IP Infusion delivers the metro aggregation router: OcNOS-SP preloaded on qualified routers that carry Carrier Ethernet E-LINE, E-LAN and E-TREE over EVPN and VPLS, protect the ring with G.8032 or with SR-MPLS and TI-LFA, and measure each service with Y.1731, under one support contract.
Two ways to protect a metro ring
A metro ring of aggregation routers carries Carrier Ethernet services to the core. OcNOS-SP protects it in one of two designs: a G.8032 Ethernet ring, or EVPN services over SR-MPLS with TI-LFA.
The same metro ring, two protection designs
G.8032 Ethernet ring. One ring link is the ring protection link, blocked in normal operation. When a link fails, the ring unblocks it and traffic flows the other way. E-LAN services run over the ring.
EVPN over SR-MPLS. Services run as EVPN over segment routing, and TI-LFA sends traffic around a failed link on a precomputed backup path. EVPN multihoming dual-homes the access.
Illustrative.
Operators running OcNOS in the metro
Netplus Broadband
OcNOS-SP with MPLS and EVPN on UfiSpace open networking hardware, across eight states and 400+ cities in India.
Read the story →AnschlussWerk
OcNOS on Edgecore cell site and aggregation routers for backbone, peering and regional PoP traffic in Bavaria.
Read the story →Telcom
OcNOS-SP on Edgecore and UfiSpace for aggregation and cell site router roles across a UK full-fibre rollout.
Read the story →“IP Infusion’s OcNOS software with Edgecore hardware were selected for providing a compelling set of features to accommodate our rapid growth. OcNOS provides an easy and common platform across different use cases, with an upgrade path from existing solutions.”
Werner Rades, CEO of AnschlussWerk
What OcNOS-SP runs in the metro
Services, ring protection and service OAM on the aggregation router, from the OcNOS Feature Matrix.
| Capability | What it does | Where |
|---|---|---|
| EVPN E-LINE and E-LAN | Point-to-point and multipoint services over MPLS, single-homed or multihomed | All OcNOS-SP |
| EVPN E-TREE | Rooted multipoint services over MPLS | All OcNOS-SP |
| VPLS and H-VPLS | LDP or BGP signalling, with BGP auto-discovery | All OcNOS-SP |
| G.8032 Ethernet ring | ERPS v2 with sub-rings and multiple instances; E-LAN over the ring | All OcNOS-SP |
| MLAG into a G.8032 ring | Dual-homes a node pair into the major ring | Selected platforms |
| EVPN over SR-MPLS with TI-LFA | Services on segment routing with a precomputed backup path | All OcNOS-SP |
| Y.1731 delay measurement | Delay and delay variation per service, over VPWS, VPLS and EVPN | All OcNOS-SP |
| Y.1731 synthetic loss | Frame loss measurement over VPLS | All OcNOS-SP |
| CFM | Fault management over VPWS, VPLS and EVPN | All OcNOS-SP |
| Queuing hierarchy | One, two or three levels of queuing, shaping per queue and per port, strict priority and WFQ | All OcNOS-SP |
Support varies by platform, service type and license. Check each one in the OcNOS Feature Matrix.
Aggregation routers by ring size
Pick the router by the ring it aggregates and the uplink it needs.

Small ring, pre-aggregation
UfiSpace S9510-28DC
Qumran 2A · 800 Gbps
24 × 25G, 2 × 100G, 2 × 400G

25G access aggregation
UfiSpace S9600-72XC
Qumran 2C · 2.4 Tbps
64 × 25G, 8 × 100G

Metro aggregation
Edgecore AS7946-30XB (AGR400)
Qumran 2C · 2.4 Tbps
4 × 25G, 22 × 100G, 4 × 400G

Large metro ring
UfiSpace S9600-56DX
Qumran 2C · 4.8 Tbps
48 × 100G, 8 × 400G
The ring hands traffic to the IP core. See every qualified router on the OcNOS Hardware Compatibility List.
Questions about the metro aggregation router.
Datasheet and SR-MPLS brief.
The OcNOS-SP datasheet and the SR-MPLS upgrade brief to share with your team. Quick form, and the PDF downloads immediately.
Plan your metro ring.
We map your rings, services and uplinks to qualified aggregation routers and the protection design that fits them.
OcNOS-SP Datasheet
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SR-MPLS Upgrade with OcNOS
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