The Cisco Nexus 6004, the first switch in the family of Cisco Nexus 6000 series, is a critical component of the Cisco unified data center architecture, complementing the existing Cisco Nexus family of switches. The Cisco Nexus 6004 offers the industry's highest 40/10 Gigabit Ethernet and Fiber Channel over Ethernet (FCoE) port density in a compact energy-efficient form factor with integrated Layer 2 and Layer 3 features at wire speed, and low latency of 1 microsecond for any packet size. With a choice of front-to-back or back-to-front airflow options, the switch is designed for a broad range of traditional data center and large-scale virtualized cloud deployments.
The Cisco Nexus 6004 is a 4-rack-unit (4RU) 10 and 40 Gigabit Ethernet switch offering wire-speed performance for up to ninety-six 40 Gigabit Ethernet ports or three hundred eighty-four 10 Gigabit Ethernet ports for Ethernet and FCoE traffic with an overall throughput of 7.68 Tbps. The Cisco Nexus 6004 offers 48 fixed ports of 40 Gigabit Ethernet with the base of the chassis and 4 line-card expansion module (LEM) slots. Although the base chassis has 48 fixed 40 Gigabit Ethernet ports, customers can purchase a convenient twenty-four 40 Gigabit Ethernet port entry option to address the small-scale deployments. With two additional 12-port 40 Gigabit Ethernet software licenses, remaining 24 ports can be enabled to use all 48 ports of 40 Gigabit Ethernet on the base chassis. Each LEM supports 12 ports of 40 Gigabit Ethernet in a QSFP form factor. For example, by adding four LEMs to the base chassis, 48 additional 40 Gigabit Ethernet ports can be achieved. Each 40 Gigabit Ethernet port can be split into four 10 Gigabit Ethernet ports using QSFP breakout cables. Thus Cisco Nexus 6004 chassis along with the LEMs offer incredible flexibility to scale the deployments, making it the only fully extensible fixed 10 and 40 Gigabit Ethernet platforms in the industry.
The Cisco Nexus 6004 switch as a high-density 10 and 40 Gigabit Ethernet and FCoE platform can be deployed in multiple scenarios: direct-attach 10 and 40 Gigabit Ethernet server-access and high-density FEX aggregation deployments, leaf and spine architectures, or compact aggregation to build a scalable Cisco unified fabric across a diverse set of physical and virtual server environments in data centers.
Optimized for virtualization and cloud deployments
Data centers today are met with demanding challenges of virtualization and cloud-based computing. High-performance servers deployed in the cloud are capable of supporting many more virtual machines and workloads than ever before. The requirement to deploy servers on demand puts additional strain on the network fabric. The Cisco Nexus 6004 switch solves this problem by providing scale and performance to make this platform an ideal one to meet the current and future needs.
Density and resiliency
Built for today's data centers, the switches are designed just like the servers they support. Ports and power connections are at the rear, close to server ports, helping keep cable lengths as short and efficient as possible, delivering benefits traditionally offered on blade servers to rack servers as well. Hot-swappable power and fan modules are accessible from the front panel, where status lights offer an at-a-glance view of switch operation. Front-to-back or back-to-front cooling is consistent with server designs, supporting efficient data center hot- and cold-aisle designs. Serviceability is enhanced with all customer-replaceable units accessible from the front panel.
The Cisco Nexus 6004 platform helps data centers operate within their space, power, and cooling parameters while reducing their carbon footprints. The switch power supplies are also capable of maintaining 90-percent efficiency at load conditions as low as 25-percent usage, allowing them to use power efficiently while still being appropriately sized to support full system load conditions.
Intelligent Switched Port Analyzer (SPAN) and Encapsulated SPAN (ERSPAN)
SPAN or ERSPAN is used for troubleshooting and robust monitoring of traffic. The SPAN and ERSPAN feature with the Cisco Nexus 6004 is no disruptive given that only extra bandwidth capacity is used for SPAN and ERSPAN traffic. SPAN and ERSPAN traffic is categorized as best effort and in case of link congestion, SPAN and ERSPAN traffic is dropped first. Some of the enhancements include a more efficient allocation of bandwidth to SPAN and ERSPAN traffic where any fabric bandwidth not used for data traffic can be allocated to SPAN and ERSPAN traffic. The Cisco Nexus 6004 can support up to 31 line-rate SPAN and ERSPAN sessions.
Flexible buffer management
The Cisco Nexus 6004 supports 25-MB packet buffer shared by every 3 ports of 40 Gigabit Ethernet or 12 ports of 10 Gigabit Ethernet. Of the 25-MB buffer, 16 MB is used for ingress and 9 MB is used for egress buffering. The Cisco Nexus 6004 supports allocation of buffer as shared, dedicated, or shared plus dedicated. The flexible buffer management capability on the Cisco Nexus 6004 allows for dynamic tuning of the shared and dedicated buffer size if congestion occurs.
The Cisco Nexus 6004 supports line-rate Layer 2 and Layer 3 multicast throughput with all frame sizes. It offers optimized multicast replication through the fabric and at the egress. The large buffers allow for absorption of bursty traffic. There is support for 32,000 multicast routes and Internet Group Management Protocol (IGMP) snooping tables in hardware. Some of the multicast enhancements include flow-based hashing for multicast traffic over PortChannel and enhanced bidirectional Protocol Independent Multicast (BiDiR PIM) support. The Cisco Nexus 6004 also supports IP-based forwarding for IGMP snooping.