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Product Description
Cisco Unified Computing System overview
The Cisco Unified Computing System&trade (Cisco UCS®) is a next-generation data center platform that unites computing networking storage access and virtualization resources into a cohesive system designed to reduce total cost of ownership (TCO) and increase business agility. The system integrates a low-latency lossless 10/25/40/100 Gigabit Ethernet unified network fabric with enterprise-class x86-architecture servers. The system is an integrated scalable multichassis platform in which all resources participate in a unified management domain (Figure 1).
The Cisco Unified Computing System&rsquos highly available cohesive architecture
The Cisco UCS 6400 Series Fabric Interconnects are a core part of the Cisco Unified Computing System providing both network connectivity and management capabilities for the system (Figure 2). The Cisco UCS 6400 Series offer line-rate low-latency lossless 10/25/40/100 Gigabit Ethernet Fibre Channel over Ethernet (FCoE) and Fibre Channel functions.
The Cisco UCS 6400 Series provide the management and communication backbone for the Cisco UCS B-Series Blade Servers UCS 5108 B-Series Server Chassis UCS Managed C-Series Rack Servers and UCS S-Series Storage Servers. All servers attached to a Cisco UCS 6400 Series Fabric Interconnect become part of a single highly available management domain. In addition by supporting a unified fabric Cisco UCS 6400 Series Fabric Interconnect provides both the LAN and SAN connectivity for all servers within its domain.
From a networking perspective the Cisco UCS 6400 Series use a cut-through architecture supporting deterministic low-latency line-rate 10/25/40/100 Gigabit Ethernet ports switching capacity of 3.82 Tbps for the 6454 7.42 Tbps for the 64108 and 200 Gbps bandwidth between the Fabric Interconnect 6400 series and the IOM 2408 per 5108 blade chassis independent of packet size and enabled services. The product family supports Cisco low-latency lossless 10/25/40/100 Gigabit Ethernet unified network fabric capabilities which increase the reliability efficiency and scalability of Ethernet networks. The fabric interconnect supports multiple traffic classes over a lossless Ethernet fabric from the server through the fabric interconnect. Significant TCO savings come from an FCoE-optimized server design in which Network Interface Cards (NICs) Host Bus Adapters (HBAs) cables and switches can be consolidated.
Cisco UCS 6454 Fabric Interconnect
Cisco UCS 64108
Unified fabric with FCoE: I/O consolidation
The Cisco UCS 6400 Series Fabric Interconnects are built to consolidate LAN and SAN traffic onto a single unified fabric saving the Capital Expenditures (CapEx) and Operating Expenses (OpEx) associated with multiple parallel networks different types of adapter cards switching infrastructure and cabling within racks. The unified ports allow ports in the fabric interconnect to support direct connections from Cisco UCS to existing native Fibre Channel SANs. The capability to connect FCoE to a native Fibre Channel protects existing storage-system investments while dramatically simplifying in-rack cabling.
Cisco UCS Manager
The Cisco UCS 6400 Series host and run Cisco UCS Manager in a highly available configuration enabling the fabric interconnects to fully manage all Cisco UCS elements. Connectivity to the Cisco UCS 5108 Blade Server Chassis is maintained through the Cisco UCS 2200 and 2408 Series Fabric Extenders in each blade chassis. The Cisco UCS 6400 Series Fabric Interconnects support out-of-band management through a dedicated 10/100/1000-Mbps Ethernet management port as well as in-band management. Cisco UCS Manager typically is deployed in a clustered active/passive configuration on redundant fabric interconnects connected through dual 10/100/1000 Ethernet clustering ports.
Cisco UCS 6454 54-Port Fabric Interconnect
The Cisco UCS 6454 54-Port Fabric Interconnect (Figure 3) is a One-Rack-Unit (1RU) 10/25/40/100 Gigabit Ethernet FCoE and Fibre Channel switch offering up to 3.82 Tbps throughput and up to 54 ports. The switch has 28 10/25-Gbps Ethernet ports 4 1/10/25- Gbps Ethernet ports 6 40/100-Gbps Ethernet uplink ports and 16 unified ports that can support 10/25-Gbps Ethernet ports or 8/16/32-Gbps Fibre Channel ports. All Ethernet ports are capable of supporting FCoE.
Front view
Rear view
Cisco UCS 6454 (1RU) 54-Port Fabric Interconnect
Cisco UCS 64108 108-Port Fabric Interconnect
The Cisco UCS 64108 Fabric Interconnect (FI) is a 2-RU top-of-rack switch that mounts in a standard 19-inch rack such as the Cisco R Series rack. The 64108 is a 10/25/40/100 Gigabit Ethernet FCoE and Fiber Channel switch offering up to 7.42 Tbps throughput and up to 108 ports. The switch has 16 unified ports (port numbers 1-16) that can support 10/25-Gbps SFP28 Ethernet ports or 8/16/32-Gbps Fibre Channel ports 72 10/25-Gbps Ethernet SFP28 ports (port numbers 17-88) 8 1/10/25-Gbps Ethernet SFP28 ports (port numbers 89-96) and 12 40/100-Gbps Ethernet QSFP28 uplink ports (port numbers 97-108). All Ethernet ports are capable of supporting FCoE.
The Cisco UCS 64108 Fabric Interconnect also has one network management port one console port for setting the initial configuration and one USB port for saving or loading configurations. The FI also includes L1/L2 ports for connecting two fabric interconnects for high availability.
Front view
Rear view
Cisco UCS 64108 (2 RU) 108-Port Fabric Interconnect
Table 1 summarizes the characteristics of the Cisco UCS 6400 Series Fabric Interconnects.
Table 1. Characteristics of Cisco UCS 6400 Series Fabric Interconnects
| Item | Cisco UCS 6454 | Cisco UCS 64108 |
| Description | 54-port fabric interconnect | 108-port fabric interconnect |
| Form factor | 1RU | 2RU |
| Number of fixed 10/25/40/100-Gbps and FCoE ports with optional unified ports | 54 fixed ports | 108 fixed ports |
| Maximum number of unified ports | 16 (unified ports 1-16) | 16 (unified ports 1-16) |
| Maximum number of 1-Gbps Ethernet ports | 4 (ports 45-48) | 8 (ports 89-96) |
| Maximum number of 40/100-Gbps Ethernet ports | 6 (ports 49-54) | 12 ((ports 97-108) |
| Throughput | 3.82 Tbps | 7.42 Tbps |
| Fan modules | 3+1 | 2+1 |
Note: Breakout cables are supported on ports 97-108 when connecting to Nexus 9K switches.
Table 2 summarizes the features and benefits of Cisco UCS 6400 Series Fabric Interconnects.
Table 2. Features and benefits
| Feature | Benefits |
| Power supply | ● Two power supplies (AC or DC) |
| Management by Cisco UCS Manager | ● Allows all elements connected to the interconnects to participate in a single highly available management domain |
| Unified fabric | ● Decreases TCO by reducing the number of NICs HBAs switches and cables required ● Transparently encapsulates Fibre Channel packets into Ethernet |
| Fabric extender architecture | ● Scales to 20 blade chassis without adding complexity by eliminating the need for dedicated chassis management and blade switches and by reducing the number of cables needed ● Provides deterministic latency for optimized application performance |
| Performance | ● Provides high-speed low-latency connectivity to the chassis ● Provides approximately 50 percent reduction in end-to-end system latency (latency is less than 1 microsecond) |
| Lossless fabric | ● Provides a reliable robust foundation for unifying LAN and SAN traffic on a single transport |
| Priority-based flow control (PFC) | ● Simplifies management of multiple traffic flows over a single network link ● Supports different classes of service helping enable both losses and classic Ethernet on the same fabric |
| Systemwide bandwidth management | ● Helps enable consistent and coherent Quality of Service (QoS) throughout the system. |
| Rear ports | ● Helps keep cable lengths short and efficient |
| Redundant hot-swappable fans and power supplies | ● Helps enable high availability in multiple configurations ● Increase serviceability ● Provides uninterrupted service during maintenance |
| Front-to-back cooling | ● Fan-side intake port-side exhaust |
| SFP+ ports | ● Increases flexibility with a range of interconnect solutions including copper Twinax cable for short runs and SFP28 and QSFP28 optics for long runs ● Consumes less power per port than traditional solutions ● Helps enable cost-effective connections on fabric extenders with Cisco ® Fabric Extender Transceiver (FET) optics |
| SFP28-compatible ports | ● Allows fixed ports to be configured to operate in 10/25 GB Ethernet mode with the transceiver options specific for use with SFP28-compatible ports in Table 3 |
| QSFP28-compatible Ports | ● Allows all ports to be configured to operate in 40/100 GB Ethernet mode with the transceiver options specific for use with QSFP28-compatible ports in Table 3 |
| Port-based licensing options | ● Helps enable a pay-as-you-grow model allowing customers to add capacity as the networking needs of an individual system increase |
Transceivers
The Cisco UCS 6400 Series Fabric Interconnects support a wide variety of 10/25/40/100 Gigabit Ethernet connectivity options using Cisco 10/25/40/100 Gbps modules. Unified Ports (UP) on the Cisco UCS 6400 Series support 10/25 Gigabit Ethernet connectivity or 8/16/32 Gigabit Fibre Channel modules. Uplink ports support 40/100 Gigabit Ethernet transceivers and cables. Table 3 lists the supported transceiver options.
Table 3. Cisco UCS 6400 Series Fabric Interconnect‒supported transceiver and cable support matrix
| Product number | Description |
| SFP 1-Gigabit transceivers | |
| GLC-TE | 1000 BASE-T SFP transceiver module for Category 5 copper wire |
| GLC-SX-MMD | 1000 BASE-SX short wavelength with DOM |
| SFP-GE-T | 1000 BASE-T SFP transceiver module for Category 5 copper wire extended operating temperature range (supported but EOL) |
| SFP+ 10-Gbps transceivers | |
| SFP-10G-SR | 10GBASE-SR SFP module |
| SFP-10G-SR-S | 10GBASE-SR SFP module Enterprise class |
|
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