Cisco Nexus 7000 and Nexus 7700 Line Cards

Nexus 7000 and Nexus 7700 support various types of I/O modules.

And there are two types of I/O modules: the M-I/O modules and the F-I/O modules.

Each has different performance metrics and features.

Table 1-8 shows the comparison between M-Series modules.

Table 1-8 Nexus 7000 and Nexus 7700 M-Series Modules Comparison

	N7KM148GS-11L	N7KM148GT-11L	N7KM108X2-12L	N7KM132XP-12L	N7KM224XP-23L	N7KM206FQ-23L	N7KM202CF-22L
Line Card Family	M1	M1	M1	M1	M2	M2	M2
Ports (Number and Type)	48, 1GE	48, 10/100/1000GE	8, 10GE	32, 10GE	24, 10GE	6, 40GE	2, 40/100GE
Interface Type	SFP	RJ-45	X2	SFP+	SFP+	QSFP+	CFP
Fabric Bandwidth (Gbps)	46	46	80	80	240	240	240
Performance (Mpps)	60	60	120	60	120	120	120
NetFlow	Full/sampled	Full/sampled	Full/sampled	Full/sampled	Full/sampled	Full/sampled	Full/sampled
FEX Support	No	No	Yes	Yes	Yes	Yes	Yes
Virtual PC (vPC) Support	Yes	Yes	Yes	Yes	Yes	Yes	Yes
QinQ	Yes	Yes	Yes	Yes	Yes	Yes	Yes
MPLS Support	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Overlay Transport Virtualization (OTV)	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Locator/ID Separation Protocol (LISP)	No	No	No	Yes	No	No	No
FCoE, FabricPath Support	No	No	No	No	No	No	No
IEEE 1588 PTP	No	No	No	No	Yes	Yes	Yes
PONG	No	No	No	No	Yes	Yes	Yes

NOTE: From the table, you see that the M1 32-port I/O module is the only card that supports LISP.

Table 1-9 shows the comparison between F-Series modules.

Table 1-9 Nexus 7000 and Nexus 7700 F-Series Modules Comparison

	N7KF248XP -25	N7KF248XP -25	N7KF248XT -25E	N7KF312FQ -25	N77- F248XP -23E	N77- F348XP -23	N77- F324FQ -25	N77- F312CK -26
Line Card Family	F2	F2e	F2e	F3	F2e	F3	F3	F3
Chassis Supported	Cisco Nexus 7000	Cisco Nexus 7000	Cisco Nexus 7000	Cisco Nexus 7000	Cisco Nexus 7700	Cisco Nexus 7700	Cisco Nexus 7700	Cisco Nexus 7700
Ports (Number and Type)	48 ports, 1 and 10GE	48 ports, 1 and 10GE	48 ports, 1 and 10GE	11-port 40GE	11-port 40GE	48-port 1 and 10GE	24-port 40GE	11-port 100GE
Interface Type	SFP, SFP+	SFP, SFP+	RJ-45	QSFP+, Bi-Di	SFP, SFP+	SFP, SFP+	QSFP+, Bi-Di	Cisco CPAK
Fabric Bandwidth (Gbps)	480	480	480	480	480	480	960	1200
Performance (Mpps)	720	720	720	720	720	720	1440	1800
NetFlow	Sampled	Sampled	Sampled	Sampled	Sampled	Sampled	Sampled	Sampled
FEX Support	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
vPC Support	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
FabricPath Support	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Layer 3 Interface	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
FCoE, FabricPath Support	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
OTV, LISP, MPLS	No	No	No	Yes	No	Yes	Yes	Yes
M-Series Interoperability in Same VDC	No	Yes	Yes	Yes	N/A	N/A	N/A	N/A

Info from http://www.ciscopress.com/articles/article.asp?p=2762085&seqNum=2

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Cisco Nexus 7000 and Nexus 7700 Supervisor Module

Cisco Nexus 7000 and Nexus 7700 Series switches have two slots that are available for supervisor modules.

Redundancy is achieved by having both supervisor slots populated.

Table 1-6 describes different options and specifications of the supervisor modules.

Key Topic

Table 1-6 Nexus 7000 and Nexus 7700 Supervisor Modules Comparison

	Nexus 7700 Supervisor 2E	Nexus 7000 Supervisor 2E	Nexus 7000 Supervisor 2	Nexus 7000 Supervisor 1
CPU	Dual Quad-Core Xeon	Dual Quad-Core Xeon	Quad-Core Xeon	Dual-Core Xeon
Speed (GHz)	2.13	2.13	2.13	1.66
Memory (GB)	32	32	12	8
Flash memory	USB	USB	USB	Compact Flash
Fiber Channel over Ethernet (FCoE) on F2 module	Yes	Yes	Yes	No
CPU Share	Yes	Yes	Yes	No
Virtual Device Contexts (VDC)	8+1 admin VDC	8+1 admin VDC	4+1 admin VDC	4
Cisco Fabric Extender (FEX) Support	64 FEX/3072 ports	64 FEX/3072 ports	32 FEX/1536 ports	32 FEX/1536 ports
Connectivity Management Processor (CMP)	Not supported	Not supported	Not supported	Supported

Cisco Nexus 7000 Series Supervisor 1 Module

The Cisco Nexus 7000 supervisor 1 module shown in Figure 1-26 is the first-generation supervisor module for the Nexus 7000. As shown in Table 1-6, the operating system runs on a dedicated dual-core Xeon processor; dual supervisor engines run in active-standby mode with stateful switch over (SSO) and configuration synchronization between both supervisors. 

There are dual redundant Ethernet out-of-band channels (EOBC) to each I/O and fabric modules to provide resiliency for the communication between control and line card processors. An embedded packet analyzer reduces the need for a dedicated packet analyzer to provide faster resolution for control plane problems. The USB ports allow access to USB flash memory devices to software image loading and recovery.

Figure 1-26 Cisco Nexus 7000 Supervisor 1 Module

The Connectivity Management Processor (CMP) provides an independent remote system management and monitoring capability. It removes the need for separate terminal server devices for OOB management, and it offers complete visibility during the entire boot process. It has the capability to initiate a complete system restart and shutdown. Administrators must authenticate to get access to the system through CMP, and it also allows access to supervisor logs and full console control on the supervisor engine.

The Cisco Nexus 7000 supervisor 1 module incorporates highly advanced analysis and debugging capabilities. The Power-on Self Test (POST) and Cisco Generic Online Diagnostics (GOLD) provide proactive health monitoring both at startup and during system operation. This is useful in detecting hardware faults. If a fault is detected, corrective action can be taken to mitigate the fault and reduce the risk of a network outage.

Cisco Nexus 7000 Series Supervisor 2 Module

The Cisco Nexus 7000 supervisor 2 module shown in Figure 1-27 is the next-generation supervisor module. As shown in Table 1-6, it has a quad-core CPU and 12G of memory compared to the supervisor 1 module, which has single-core CPU and 8G of memory. The supervisor 2E module is the enhanced version of the supervisor 2 module with two quad-core CPUs and 32G of memory.

Figure 1-27 Cisco Nexus 7000 Supervisor 2 Module

The supervisor 2 module and supervisor 2E module have more powerful CPUs, larger memory, and next-generation ASICs that together will result in improved performance, such as enhanced user experience, faster boot and switchover times, and a higher control plane scale, such as higher VDC and FEX.

Both the supervisor 2 module and supervisor 2E module support FCoE; when you are choosing the proper line card, they support CPU shares, which will enable you to carve out CPU for higher priority VDCs. Sup2E supports 8+1 VDCs. Sup2 scale is the same as Sup1; it will support 4+1 VDCs.

NOTE: You cannot mix Sup1 and Sup2 in the same chassis. Note that this will be a disruptive migration requiring removal of supervisor 1. Sup2 and Sup2E can be mixed for migration only. This will be a nondisruptive migration.

Cisco Nexus 7000 and Nexus 7700 Fabric Modules

The Nexus 7000 and Nexus 7700 fabric modules provide interconnection between line cards and provide fabric channels to the supervisor modules. The Nexus 7000 has five fabric modules, and the Nexus 7700 has six; adding fabric modules increases the available bandwidth per I/O slot because all fabric modules are connected to all slots. Figure 1-28 shows the different fabric modules for the Nexus 7000 and Nexus 7700 products.

Figure 1-28 Cisco Nexus 7000 Fabric Module

In the case of Nexus 7000, when using Fabric Module 1, which is 46 Gbps, you can deliver a maximum of 230 Gbps per slot using five fabric modules. When using Fabric Module 2, which is 110 Gbps, you can deliver a maximum of 550 Gbps per slot. In Nexus 7700, by using Fabric Module 2, which is 220 Gbps per slot, you can deliver a maximum of 1.32 Tbps per slot.

All fabric modules support load sharing, and the architecture supports lossless fabric failover. In case of a failure or removal of one of the fabric modules, the remaining fabric modules will load balance the remaining bandwidth to all the remaining line cards.

Nexus 7000 supports virtual output queuing (VOQ) and credit-based arbitration to the crossbar to increase performance. VOQ and credit-based arbitration allow fair sharing of resources when a speed mismatch exists to avoid head-of-line (HOL) blocking.

The Nexus 7000 implements a three-stage crossbar switch. Fabric stage 1 and fabric stage 3 are implemented on the line card module, and stage 2 is implemented on the fabric module. Figure 1-29 shows how these stages are connected to each other. There are four connections from each fabric module to the line cards, and each one of these connections is 55 Gbps. When populating the chassis with six fabric modules, the total number of connections from the fabric cards to each line card is 24. It provides an aggregate bandwidth of 1.32 Tbps per slot.

Figure 1-29 Cisco Nexus 7700 Crossbar Fabric

There are two connections from each fabric module to the supervisor module. These connections are also 55 Gbps. When all the fabric modules are installed, there are 12 connections from the switch fabric to the supervisor module, providing an aggregate bandwidth of 275 Gbps.

NOTE: Cisco Nexus 7000 fabric 1 modules provide two 23Gbps traces to each fabric module, providing 230 Gbps of switching capacity per I/O slot for a fully loaded chassis. Each supervisor module has a single 23Gbps trace to each fabric module.

Info from http://www.ciscopress.com/articles/article.asp?p=2762085&seqNum=2

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Cisco Nexus 7000 and Nexus 7700 Series Power Supply Options

The Nexus 7000 and Nexus 7700 use power supplies with +90% power supply efficiency, reducing power wasted as heat and reducing associated data center cooling requirements. The switches offer different types of redundancy modes. They offer visibility into the actual power consumption of the total system, as well as modules enabling accurate power consumption monitoring, for the right sizing of power supplies, UPSs, and environmental cooling. Variable-speed fans adjust dynamically to lower power consumption and optimize system cooling for true load.

• Power redundancy: Multiple system-level options for maximum data center availability.
• Fully hot-swappable: Continuous system operations; no downtime in replacing power supplies.
• Internal fault monitoring: Detects component defect and shuts down unit.
• Temperature measurement: Prevents damage due to overheating (every ASIC on the board has a temperature sensor).
• Real-time power draw: Shows real-time power consumption.
• Variable fan speed: Automatically adjusts to changing thermal characteristics; lower fan speeds use lower power.

Cisco Nexus 7000 and Nexus 7700 Series 3.0kW AC Power Supply Module

The 3.0kW AC power supply shown in Figure 1-30 is designed only for the Nexus 7004 chassis and is used across all the Nexus 7700 Series chassis. It is a single 20-ampere (A) AC input power supply. When connecting to high line nominal voltage (220 VAC) it will produce a power output of 3000W; connecting to low line nominal voltage (110 VAC) will produce a power output of 1400W.

Figure 1-30 Cisco Nexus 7000 3.0kW AC Power Supply

NOTE: Although the Nexus 7700 chassis and the Nexus 7004 use a common power supply architecture, different PIDs are used on each platform. Therefore, if you interchange the power supplies, the system will log an error complaining about the wrong power supply in the system; although technically this might work, it is not officially supported by Cisco.

Cisco Nexus 7000 and Nexus 7700 Series 3.0kW DC Power Supply Module

The 3.0kW DC power supply shown in Figure 1-31 is designed only for the Nexus 7004 chassis and is used across all the Nexus 7700 Series chassis. The Nexus 3.0kW DC power supply has two isolated input stages, each delivering up to 1500W of output power. Each stage uses a –48V DC connection. The unit will deliver 1551W when only one input is active and 3051W when two inputs are active.

Figure 1-31 Cisco Nexus 7000 3.0kW DC Power Supply

Cisco Nexus 7000 Series 6.0kW and 7.5kW AC Power Supply Modules

The 6.0kW and 7.5kW power supplies shown in Figure 1-32 are common across Nexus 7009, 7010, and 7018. They allow mixed-mode AC and DC operation, enabling migration without disruption and providing support for dual environments with unreliable AC power, with battery backup capability.

Figure 1-32 Cisco Nexus 7000 6.0kW and 7.5kW Power Supplies

Table 1-10 shows the specifications of both power supplies with different numbers of inputs and input types.

Table 1-10 Nexus 7000 and Nexus 7700 6.0kW and 7.5kW Power Supply Specifications

Power Supply Type	Number of Inputs	Input Power	Output
6.0kW	Single input	220V	3000W
		110V	1200W
	Dual input	220V	6000W
		110V	2400W
	Dual input	110 and 220V	4200W
7.5kW	Single input	220V	3750W
	Dual input	220V	7500W

Cisco Nexus 7000 Series 6.0kW DC Power Supply Module

The 6kW DC power supply shown in Figure 1-33 is common to the 7009, 7010, and 7018 systems. The 6kW has four isolated input stages, each delivering up to 1500W of power (6000W total on full load) with peak efficiency of 91% (high for a DC power supply). The power supply can be used in combination with AC units or as an all DC setup. It supports the same operational characteristics as the AC units:

• Redundancy modes (N+1 and N+N)
• Real-time power—actual power levels
• Single input mode (3000W)
• Online insertion and removal
• Integrated lock and On/Off switch (for easy removal)

Figure 1-33 Cisco Nexus 7000 6.0kW DC Power Supply

Multiple power redundancy modes can be configured by the user:

• Combined mode, where the total power available is the sum of the outputs of all the power supplies installed. (This is not redundant.)
• PSU redundancy, where the total power available is the sum of all power supplies minus one, otherwise commonly called N+1 redundancy.
• Grid redundancy, where the total power available is the sum of the power from only one input on each PSU. Each PSU has two supply inputs, allowing them to be connected to separate isolated A/C supplies. In the event of an A/C supply failure, 50% of power is secure.
• Full redundancy, which is the combination of PSU redundancy and grid redundancy. You can lose one power supply or one grid; in most cases this will be the same as grid redundancy.

Full redundancy provides the highest level of redundancy, so it is recommended. However, it is always better to choose the mode of power supply operation based on the requirements and needs.

An example of each mode is shown in Figure 1-34.

Figure 1-34 Nexus 6.0kW Power Redundancy Modes

To help with planning for the power requirements, Cisco has made a power calculator that can be used as a starting point. It is worth mentioning that the power calculator cannot be taken as a final power recommendation.

The power calculator can be found at http://www.cisco.com/go/powercalculator.

Info from http://www.ciscopress.com/articles/article.asp?p=2762085&seqNum=2

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