UCS Product Overview – The Fabric Interconnect

I want to start off with an overview the current UCS product line up… beginning with the fabric interconnects.   Listing it out this way is simply to help me quickly determine what differentiates one component from the next and learn the Unified Computing solution as a whole..  I will try to find and add prices so we can price out a solution.   So without further delay…

Cisco UCS6120XP 20-port (top) and 6140XP 40-port Fabric Interconnect (Bottom)

The Fabric Interconnects
What is the fabric interconnect?  The  interconnects provide a management domain, I/O consolidation in a high capacity loss-less fabric, and network connectivity for all attached devices.  You might say that the interconnects are the communications core or backbone.  They are currently available in two models… the 6100 series and 6200 series.  I’ll review both.

Cisco UCS 6100 Series Fabric Interconnects

Model    Port         Size     Throughput                             Expansion slots
6120XP   20-port  1RU         520Gbps  (386.9mil packets)             1
6140XP   40-port  2RU        1.04Tbps                                                  2

Performance
● Cisco UCS 6120XP: Layer 2 hardware forwarding at 520 Gbps or 386.9 million packets per second (mpps)
● Cisco UCS 6140XP: Layer 2 hardware forwarding at 1.04 Tbps or 773.8 mpps
● MAC address table entries: 16,000
● Low-latency (3.2 ms port-to-port latency).

Layer 2
● Layer 2 interconnect ports and VLAN trunks
● IEEE 802.1Q VLAN encapsulation
● Support for up to 1024 VLANs and virtual SANs (VSANs) per interconnect
● Rapid Per-VLAN Spanning Tree Plus (PVRST+)
● Internet Group Management Protocol (IGMP) Versions 1, 2, and 3 snooping
● Cisco EtherChannel technology
● Link Aggregation Control Protocol (LACP): IEEE 802.3ad
● Advanced EtherChannel hashing based on Layer 2, 3, and 4 information
● Jumbo frames on all ports (up to 9216 bytes)
● Pause frames (IEEE 802.3x)

QoS
● Layer 2 IEEE 802.1p (class of service [CoS])
● Eight hardware queues per port
● Per-port QoS configuration
● CoS trust
● Per-port virtual output queuing
● CoS-based egress queuing
● Egress strict-priority queuing
● Egress port-based scheduling: Weighted Round-Robin (WRR)

High Availability
● Hot-swappable field-replaceable power supplies, fan modules, and expansion modules
● 1+1 power redundancy
● N+1 fan module redundancy

Cisco UCS 6200 Series Fabric Interconnects
Comes in a single model, the 48-port UCS6248XP

The UCS 6248UP 48-Port Fabric Interconnect

Management on Cisco UCS Manager
Performance
• Cisco UCS 6248UP: Layer 2 hardware forwarding at 960 Gbps or 714.24 million packets per second (mpps
• MAC address table entries: 32,000
• Low-latency cut-through design provides predictable, consistent traffic latency regardless of packet size, traffic pattern, or enabled features

Layer 2
• Layer 2 interconnect ports and VLAN trunk
• IEEE 802.1Q VLAN encapsulation
• Support for up to 1024 VLANs and virtual SANs (VSANs) per interconnect
• Rapid Per-VLAN Spanning Tree Plus (PVRST+)
• Internet Group Management Protocol (IGMP) Versions 1, 2, and 3 snooping
• Cisco EtherChannel technology
• Link Aggregation Control Protocol (LACP): IEEE 802.3ad
• Advanced EtherChannel hashing based on Layer 2, 3, and 4 information
• Jumbo frames on all ports (up to 9216 bytes)
• Pause frames (IEEE 802.3x)

Layer 3
• Layer 3-ready (with future Layer 3 expansion module and daughter card)

QoS
• Layer 2 IEEE 802.1p (class of service [CoS])
• Eight hardware queues per port
• Per-port QoS configuration
• CoS trust
• Per-port virtual output queuing
• CoS-based egress queuing
• Egress strict-priority queuing
• Egress port-based scheduling: Weighted Round-Robin (WRR)

High Availability
• Hot-swappable field-replaceable power supplies, fan modules, and expansion modules
• 1+1 power redundancy
• N+1 fan module redundancy

Management
• Interconnect management using redundant 10/100/1000-Mbps management or console ports
• All management provided through Cisco UCS Manager; please refer to the Cisco UCS Manager data sheet for more information about management interfaces

Low-Latency, Lossless 10 Gigabit Ethernet Unified Network Fabric
• PFC (per-priority pause frame support)
• Data Center Bridging Exchange (DCBX) Protocol
• IEEE 802.1Qaz: Bandwidth management
• Layer 2 multipathing (future)

Unified Ports
• All ports configurable as 1/10 Gigabit Ethernet or 8/4/2/1-Gbps Fibre Channel

Industry Standards
• IEEE 802.1p: CoS prioritization
• IEEE 802.1Q: VLAN tagging
• IEEE 802.1s: Multiple VLAN instances of Spanning Tree Protocol
• IEEE 802.1w: Rapid reconfiguration of Spanning Tree Protocol
• IEEE 802.3: Ethernet
• IEEE 802.3ad: LACP
• IEEE 802.3ae: 10 Gigabit Ethernet
• SFP+ support
• RMON

So that the beast that is the Fiber Interconnect management consolidation on a super high performance fabric.  3 models .. the 6120XP, 6140XP and the 6248UP.

Next time I will discuss the Fabric extenders, the hardware component that links the Fabric Interconnect to the UCS 5108Blade Server Chassis or the rack mount servers.

Good nite folks!

Try out the Cisco UCS Manager, Emulator available for download at

Cisco Unified Computing System Platform Emulator

Advertisements