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Table Of Contents
Cisco UCS 6248 UP Fabric Interconnect Chassis
Cisco UCS 6296 UP Fabric Interconnect Chassis
UCS Unified Port Expansion Module
Cisco UCS 6248 UP Port Numbering
Cisco UCS 6296 UP Port Numbering
Cabling Considerations for Fabric Port Channels
SFP Fibre Channel Transceivers
Product Overview
This describes the Cisco UCS Fabric Interconnects and their components, and includes the following sections:
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Cisco UCS 6248 UP Fabric Interconnect Chassis
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Interconnect Features
A Cisco UCS 6200 series fabric interconnect is a top-of-rack fabric interconnect that provides Ethernet and Fibre Channel to all servers in the UCS system. Servers connect to the fabric interconnect, and it connects to the LAN or SAN.
This family of fabric interconnects connect UCS servers to 10 Gigabit Ethernet 1, 2, 4, and 8 Gbps Fibre Channel networks, and provides consolidated I/O connectivity to both production Ethernet LANs and Fibre Channel SANs in a cost-effective, high-performance, low-latency environment.
The Cisco UCS 6200 series has the following characteristics:
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Cisco UCS 6248 UP Fabric Interconnect Chassis
The Cisco UCS 6248 UP chassis is 1 RU, 1.72 inches tall, 17.3 inches wide and 30.0 inches deep. It mounts in a standard 19-inch rack (the Cisco R Series rack is an ideal choice). The chassis has two power supplies and two fan modules on the front of the chassis, and it has network ports on the rear of the chassis as well as also has one USB port (usb1:) at the front. This external USB flash memory is installed in a supervisor module used for storing image files, configuration files, and other miscellaneous files. You can create directories on external flash memory and navigate through these directories. You can also create and access files. The usb1: port usage on the Cisco UCS 6248 is the same as that on Cisco NX-OS devices. (For details, see http://www.cisco.com/en/US/docs/switches/datacenter/sw/5_x/nx-os/fundamentals/configuration/guide/Cisco_Nexus_7000_Series_NX-OS_Fundamentals_Configuration_Guide_Release_5.x_chapter7.htm)
Thirty-two fixed 10-Gigabit Ethernet ports and an expansion modules slot supporting 16 ports are at the rear of the switch. The airflow is front to back. Figure 1-1 shows the front of the Cisco UCS 6248 UP.
Figure 1-1 shows the front of the chassis.
Figure 1-1 Cisco UCS 6248 UP Front View
Management (10/100/1000) port, console port, and USB port (see Figure 1-4)
Two power supplies (AC shown)
Two fan modules
The rear of the Cisco UCS 6248 UP chassis has 32 fixed 10-Gigabit, Fiber Channel over Ethernet-capable SFP+ Ethernet ports, 1 slot for an optional expansion module, Figure 1-2 shows the rear of the Cisco UCS 6248 UP.
Figure 1-2 Cisco UCS 6248 UP Rear View
Figure 1-3 shows a close-up view of the rear of the Cisco UCS 6248 UP chassis.
Figure 1-3 Cisco UCS 6248 UP Switch Rear View Close-up
System status LED and beaconing LED/button
16 port Expansion module
32 fixed 10-Gigabit Ethernet ports
The front connector ports are in a 2x2 stacked RJ-45 jack. Figure 1-4 shows a close-up view of the Ethernet connector ports.
Figure 1-4 Connector Ports, LEDs
Beaconing LED/button
Network management port
System Status LED
Console port
UCS cross connect port L1
USB port
UCS cross connect port L2
Table 1-1 lists the LED descriptions for all Ethernet LEDs.
Table 1-1 Ethernet LED Descriptions
Left
Off
No link
Solid green
Physical link
Right
Off
No activity
Blinking green
Activity
Cisco UCS 6296 UP Fabric Interconnect Chassis
The Cisco UCS 6296 UP chassis is 2 RU or 3.47 inches (8.8 cm) tall, 17.3 inches (43.9 cm) wide, and 29.5 inches (74.9 cm) deep. It is designed to be mounted in a standard 19-inch wide rack. The front of the switch, shown in Figure 1-5, has a USB port, four Ethernet and ports (two cross-connect ports, one management port, and one console port), two power supplies, and four fan modules.
Figure 1-5 Front View of the Cisco UCS 6296 UP
The management and console ports are in a 2 x 2 stacked RJ-45 jack. Figure 1-6 shows a close-up view of these ports. For information about the connector port LEDs, see Table D-1.
Figure 1-6 Management and Console Ports
Beaconing LED/button
Network management port
System Status LED
Console port
UCS cross connect port L1
USB port
UCS cross connect port L2
The rear of the Cisco UCS 6296 UP chassis, shown in Figure 1-7, has 48 fixed 10-Gigabit Ethernet data ports on the bottom and three slots for optional expansion modules on top.
Figure 1-7 Rear View of the Cisco UCS 6296 UP
Expansion modules, shown here with three 16-port Universal GEM2 modules (can also have Layer 3 GEM2 modules)
System status LED
Identifier LED
48 fixed 1- and 10-Gigabit Ethernet ports
UCS Unified Port Expansion Module
Expansion modules allow Cisco UCS 6200 Series Fabric Interconnect to be configured as cost-effective 10-Gigabit Ethernet fabric interconnects and as I/O consolidation platforms with native Fibre Channel connectivity. The Cisco UCS 6248 UP has one slot for an optional expansion module.The Cisco UCS 6296 has three slots for an optional uplink expansion module. The expansion modules are hot swappable. Only the 16-port UCS E16UP expansion module using the small form factor pluggable plus (SFP+) interface is supported.
Figure 1-8 shows the UCS E16UP expansion module.
Figure 1-8 16-port 10Gb Unified Port Expansion Module (UCS-FI-E16UP)
Figure 1-9 shows a front view of the expansion module.
Figure 1-9 UCS E16UP GEM
Cisco UCS 6248 UP Port Numbering
Each individual port is numbered, and groups of ports are numbered based on their function. The ports are numbered top to bottom and left to right.
There are 32 to 48 ports on the Cisco UCS 6248 UP, depending on whether an expansion module is installed. Each individual port is numbered, and groups of ports are numbered based on their function. The ports are numbered from top to bottom and left to right.
Figure 1-10 Port Numbering of the Cisco UCS 6248UP with an Expansion Module
Cisco UCS 6296 UP Port Numbering
Each port on the Cisco UCS 6296 UP is numbered, and groups of ports are numbered based on their function. The ports are numbered top to bottom and left to right. The 48 fixed ports support 8-, 4-, 2-, or 1-Gbps Fibre Channel transceivers and 1- or 10-Gigabit Ethernet transceivers.
Figure 1-11 shows how ports are numbered and grouped by function for both the fixed ports and the Fibre Channel plus Ethernet expansion module ports.
Figure 1-11 Port Numbering of Fixed Ports and Fibre Channel Plus Ethernet Expansion Module Ports
Port numbering for the 48 fixed ports
Port numbering for the 16-port GEM in slot 1
Port numbering for the 16-port GEM in slot 2
Port numbering for the 16-port GEM in slot 3
Cabling Considerations for Fabric Port Channels
When you configure the links between the UCS 2208 IOM to the UCS 6248 fabric interconnect in fabric port channel mode, the available VIF namespace on the adapter varies depending on where the IOM uplinks are connected to the fabric interconnect ports.
Inside the 6248 fabric interconnect there are six sets of eight contiguous ports, with each set of ports managed by a single chip. When uplinks are connected such that all of the uplinks from an IOM are connected to a set of ports managed by a single chip, Cisco UCS Manager maximizes the number of VIFs used in service profiles deployed on the blades in the chassis. If uplink connections from an IOM are distributed across ports managed by separate chips, the VIF count is decreased.
Figure 1-12 Port Groups for Fabric Port Channels
Caution
For high availability cluster mode applications, symmetric cabling configurations are strongly recommended. If the cabling is asymmetric, the maximum number of VIFs available is the smaller of the two cabling configurations.
For more information on the maximum number of VIFs for your Cisco UCS environment, see the configuration limits document for your for your hardware and software configuration.
Power Supplies
The fabric interconnect uses a front-end power supply. The chassis has slots for two power supplies. Two power supplies can be used for redundancy, but the fabric interconnect is fully functional with one power supply. Figure 1-13 shows the 390 W AC power supply, which has two LEDs: one for power status and one for failure condition. Figure 1-15 shows the 390 W power supply, which has two LEDs: one for power status and one for failure condition.
Figure 1-13 AC Power Supply for the Cisco UCS 6248 UP Fabric Interconnect
Figure 1-14 DC Power Supply for the Cisco UCS 6248 UP Fabric Interconnect
Figure 1-15 Power Supply for the Cisco UCS 6296 UP Switch
Table A-2 Table A-3 and list the power supply properties of the Cisco UCS 6248 UP.
Table 1-3 describes the status of the two power supply LEDs.
If one power supply is installed in the chassis, but the other power supply slot is empty, a blank filler panel (N10-S1BLKP=) should be used to cover the empty slot.
Fan Module
TheCisco UCS 6248 UP fabric interconnect has slots for two fan modules (also called fan trays). Each fan module houses 4 fans. The combination of 4 fans per module and 2 modules provides the chassis with 8 fans. Figure 1-16 shows the fan module for the Cisco UCS 6248 UP.
Figure 1-16 Cisco UCS 6248 UP Fan Module (UCS-FAN-6248UP=)
Fan Tray Status LED (see Table 1-4)
The Cisco UCS 6296 UP switch has four fan modules with one fan each.
Figure 1-17 Cisco UCS 6296 UP Fan Module
The bi-color fan module LED indicates fan tray health. Green indicates normal operation, while amber indicates a fan failure.
LED Descriptions
The switch has three chassis activity LED's.
Table 1-4 describes the LEDs for the Cisco UCS 6200 series fabric interconnect.
Port Level LEDs
There are port activity LEDs on the chassis and on the expansion modules. Table 1-5 summarizes the behavior of the port LEDs.
Table 1-5 Port LEDs
Green (blinking)
Link is up, enabled, and active.
Amber
Link is administratively disabled.
Amber (blinking)
POST or operational error.
Off
Link is down.
Supported Transceivers
The fabric interconnect supports SFP+ Ethernet transceivers, SFP transceivers, and SFP Fibre Channel transceivers. Specifications for these transceivers is at:
SFP+ Transceivers
The high bandwidth of 10-Gigabit Ethernet poses challenges to transmissions that are met by the transceiver and cabling options supported by the Cisco UCS 6200 platform.
The enhanced SFP+ 10-Gigabit Ethernet transceiver module is a bidirectional device with a transmitter and receiver in the same physical package. It has a 20-pin connector on the electrical interface and duplex LC connector on the optical interface. Table 1-6 lists the supported transceiver options.
Note
SFP Transceivers
The SFP 1 -Gigabit Ethernet transceiver module is a bidirectional device with a transmitter and receiver in the same physical package. Table 1-7 lists the supported SFP optical transceivers.
Note
SFP+ Copper Cables
Copper cables are available for use with the 10-Gigabit Ethernet SFP+ module. See Table 1-8 for a description of these cables.
On the Cisco UCS 6200 platforms, you can use an innovative Twinax copper cable that connects to standard SFP+ connectors for in-rack use, and on optical cable for longer cable runs.
For in-rack or adjacent-rack cabling, the Cisco UCS 6200 platform supports SFP+ direct-attach 10-Gigabit Ethernet copper, which integrates transceivers with Twinax cables into an energy efficient, low-cost, and low-latency solution. SFP+ direct-attach 10-Gigabit Twinax copper cables use only 0.1 watts of power per transceiver and introduce only approximately 0.25 microsecond of latency per link.
For longer cable runs, the Cisco UCS 6200 platform supports multimode, short-reach optical SFP+ transceivers. These optical transceivers use approximately 1 W per transceiver and have a latency of less than 0.1 microsecond.
Table 1-9 shows details of the cables supported:
SFP Fibre Channel Transceivers
The Cisco UCS 6200 series fabric interconnects support multimode 850nm 4 Gbps and 8 Gbps SFPs with 150m reach (see Table 1-10).
Note
