Cable operators have seen exponential growth in broadband traffic in recent years. According to industry reports, downstream and upstream traffic grew significantly annually for the past several years. Even after many years of high rates of traffic growth, the pace continues. Much of this growth is due to the consumption of video, which accounts for a significant and growing percentage of bandwidth used in Hybrid Fiber-Coaxial (HFC) networks.
| DOCSIS support | DOCSIS 3.1 (backward compatible with 3.0) |
| Downstream capacity | Up to 8 OFDM (D3.1) channels |
| Upstream capacity | Up to 16 OFDMA (D3.1) channels |
| Chassis compatibility | Cisco cBR-8 Converged Broadband Router |
| Role | Integrated CCAP line card for HFC networks |
| DOCSIS 3.0 interop | Supports 3.0 channel bonding (e.g., 32x8 per SG) |
| Modulation | OFDM/OFDMA with up to 4096‑QAM (DS), 1024‑QAM (US) |
| Spectrum options | Supports sub-/mid-/high-split profiles (system dependent) |
| Throughput | Multi‑gigabit per service group (design dependent) |
| Licensing | Requires appropriate cBR DOCSIS 3.1 feature licenses |
| Redundancy | N+1 line card redundancy support |
| Security | BPI+ downstream encryption; secure provisioning |
| Management | IOS‑XE on cBR; SNMP/CLI; telemetry |
| Use cases | Gigabit broadband, IPTV/video, business services over HFC |
| RF interface | Connects to external RF plant via cBR backplane I/O modules |
Yes, the Cisco CBR Line Card 2 DS D3.1 modules and 1 US D3.1 Module - CBR-LC-8D31-16U31 is currently in stock and available for immediate shipment from our Boulder, CO warehouse. Same-day shipping on orders placed before 2pm MT.
This CBR-LC-8D31-16U31 is professionally refurbished or new-surplus enterprise hardware. Every unit is fully tested, factory-reset, and inspected before shipping. Cosmetic blemishes (rack marks, minor scuffs) may be present but never affect functionality.
The CBR-LC-8D31-16U31 comes with the Eldo Systems Lifetime Warranty covering hardware defects. We are an independent reseller — manufacturer warranties do not apply, but our lifetime coverage matches or exceeds typical OEM terms.
Free ground shipping on every order, included in the price. Orders ship same-day if placed before 2pm MT (Mon–Fri). Expedited overnight and 2-day options are available at checkout for urgent deployments.
Yes — we ship worldwide. International orders are quoted individually so we can present accurate freight, duties, and lead time. Use the Request a Quote form or call (484) 630-1533 to start.
Absolutely. We offer volume discounts and project pricing for resellers, integrators, and end-users buying in quantity. Submit a quote with your target quantity and our team will respond within 15 minutes during business hours.
Get the CBR-LC-8D31-16U31 from Eldo Systems with lifetime warranty and free ground shipping.
Independent Reseller Notice: Eldo Systems is an independent reseller of refurbished and new-surplus enterprise networking equipment. We are not affiliated with, authorized by, or endorsed by Cisco, Juniper, Arista, HPE, Dell, Meraki, Fortinet, Mellanox, NVIDIA, Finisar, or any other manufacturer listed on this site. All product names, logos, and brands are property of their respective owners. All products sold are refurbished or new-surplus unless otherwise noted. Manufacturer warranties do not apply; all items are covered by the Eldo Systems Lifetime Warranty.
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