Powerful - Wire-speed performance, true pay-as-you-grow Stackable Chassis capabilities, delivering up to 400 ports, 672 Gbps of virtual backplane throughput, and up to 40 Gbps uplink capacity.

Fabric-enabled - Support for Avaya Fabric Connect that extends virtual fabric services from the data center all the way to the wiring closet.

Comprehensive Layer 3 Services - Advanced routing features enable traffic segregation ideal for network distribution and core applications.

Mitigates Risk - Standards-based IEEE 802.1x with integration with Avaya’s Identity Engines portfolio for centralized, policy-based authenticated network access. Also MACSec-ready (IEEE 802.1AE) for encryption-based protection services.1

Flexible - Mix-and-match best-in-class stacking capabilities with support for PoE/PoE+ and optional 1GbE / 10GbE SFP+ uplinks.
The Ethernet Routing Switch 5900 Series provide resilient Stackable Chassis capabilities, high-performance Layer 2 switching, Layer 3 routing, advanced convergence features and a full suite of security, QoS and management capabilities.
The ERS 5900 hardware is based on
next-generation ASIC technology that combines wire-speed performance
and non-blocking throughput with sophisticated QoS capabilities to support even the most demanding suite of applications. It can be positioned for a variety of customer scenarios, including:

High-end wiring closet - with advanced convergence features, including PoE/PoE+, QoS, comprehensive security risk mitigation and up to 40 Gbps uplink capacity, the ERS 5900 is a flexible high-performance switching option for converged edge deployments.

Network distribution switch for campus - its Layer 3 routing services and high-performance make the ERS 5900 a powerful aggregation or distribution solution for both mid-market and large enterprises. It can connect either to core switches or directly to data center servers while reducing latency and providing high end-to-end performance.
High performance architecture with true pay-as-you grow scaling
Our Stackable Chassis products combine non-blocking internal switching fabrics with high-speed virtual backplane architecture to deliver a high performance solution that scales proportionally as new switches are added. The ERS 5900 Series can scale up to 672 Gbps of virtual backplane throughput by simply cabling together up to 8 units. Adding a new unit to the Stack Chassis is as easy as cabling in a new member, then extending the appropriate configuration. The necessary software images and the configuration file are automatically downloaded to the new unit and then brought on-line without any user intervention.
All ERS 5900 models come with two built-in Stackable Chassis interfaces for simple, cost-effective and efficient connectivity. Unlike comparative offerings which daisy chain low-speed interfaces, this design frees uplink ports for dedicated connectivity to the backbone. In addition to the stacking cables, a return cable is also used to protect against any port, unit or cable failures.Figure 1. ERS 5900 stack back view with stacking cables, fans and power supplies
In-stack switch replacement and restoration
Virtual hot swap capabilities enable any failed switch unit of the Stackable Chassis to be quickly and easily replaced with a like-for-like switch without any impact to the existing traffic or any units. If a failure occurs, neighboring switches automatically wrap their fabric connections so that other switches within the Stackable Chassis are not impacted. The failed unit is simply disconnected from the virtual backplane and, without pre-staging of software or configuration, a like-for-like unit is inserted, cabled, and powered-up. The Automatic Unit Replacement (AUR) process self-manages software and configuration downloads to the new switch then brings it online, without the need for an engineer to configure or manage the process.
Further complementing the Stackable Chassis architecture, the Avaya ERS 5900 Series supports standards-based 802.3ad Link Aggregation as well as Avaya’s own Multi-Link Trunking technology that allows grouping of links to form high-speed trunks/aggregations. Groups of links between the ERS 5900 and another device can be aggregated (or trunked) to enhance bandwidth and resiliency through active redundant links. Additionally, trunked links can span different units in the same Stackable Chassis, enabling more fail-safe connectivity to mission critical servers and the network core.
Stack health-check monitoring, a real-time, at-a-glance view of operational status and health further enhances operational and management simplicity.
Avaya Ethernet Routing Switch 5900 Series
Link and Uplink Ports
24 x 10/100/1000BASE-T ports, plus 4 x SFP+ uplink ports
24 x 10/100/1000BASE-T ports supporting 802.3at PoE+, plus 4 x SFP+ uplink ports
48 x 10/100/1000BASE-T ports, plus 4 x SFP+ uplink ports
48 x 10/100/1000BASE-T ports supporting 802.3at PoE+, plus 4 x SFP+ uplink ports