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Cisco Nexus Hardware Architecture Detail

Created by Alok Rastogi in Articles 6 Jan 2024
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In this blog we will particularly discussion about Cisco Nexus 7000 series switch its hardware architecture, its device installation and Administration features.

Few main objectives of this blog article are given below:

1. Describe the Cisco Nexus 7000 Switch chassis.

2. Describe the supervisor module and I/O module features, fabric module capacity, and redundancy capability.

3. Describe VOQ operation

4. Describe packet flow and arbitration across the fabrics

5. Describe key features of the Cisco Nexus 7000 Switch power supplies and fan cooling systems

6. Describe key hardware high-availability features.

Cisco Nexus 7000 Switch chassis



Nexus 7009Nexus 7010Nexus 7018
Slots7 I/O + 2 sup8 I/O + 2 sup16 I/O + 2 sup
Height14 RU21 RU25 RU
AirflowSide-to-sideFront-to-backSide-to-side
Port density224*/336**256*/384**512*/768**
System Performance, bpps5.045.7611.5
BW Fab 1 slot, Gb/sN/A230230
BW Fab 2 slot, Gb/s550550550

*With 10 Gigabit M1 or F1 I/O Modules

** With 1 Gigabit M1 or 1/10 Gigabit F2 I/O Modules

Cisco Nexus 7009 Switch chassis


It consists of different components such as

In Front:

● Supervisor slots (1-2)

● Optional front doors

● I/O slots (3-9)

● Locking ejector levers

● Summary LEDs

● Fabric Modules

● Integrated Cable Management

In Rear:

● Power Supplies

● Fan tray

Cisco Nexus 7010 Switch chassis


It consists of different components such as:

In Front:

● System Status LEDs

● Integrated Cable Management with Door

● Lockable Front Doors (Removable)

● Supervisor Slots (5-6)

● I/O Slots (1-4, 7-10)

● Air Intake with Optional Filter

In Rear:

● Air Exhaust

● Two system Fan trays

● Two fabric Fan trays

● Fabrics Modules (Upto 5)

● Power Supplies (upto 3)

Cisco Nexus 7018 Switch chassis


It consists of different components such as:

In Front:

● System Status LEDs

● Supervisor Slots (9-10)

● I/O Slots (1-8)

● Air Intake

In Rear:

● System Fan trays

● Fabrics Modules (Upto 5)

● 5- kW Power Supplies (upto 4)

Supervisor Modules, I/O Modules and Fabric Modules

Moving on Supervisor Modules, there are mainly 3 types of Supervisor module

● Sup 1

● Sup 2

● Sup 2e

Supervisor module is compatible with Cisco Nexus 7009, 7010, and 7018

Interfaces

● Supervisor management port: 10/100/1000 Mb/s Ethernet port

● CMP management port: 10/100/1000 Mb/s Ethernet port

● Console serial port: RJ-45 connector

● Auxiliary serial port: RJ-45 connector

● Three USB ports: Two host and one device port for peripheral devices

Memory:

● DRAM: 8 GB

● Flash memory: 2 GB

● NVRAM: 2-MB battery backup



Cisco Nexus 7009Cisco Nexus 7010Cisco Nexus 7018
Supervisor locationSlot 1 and 2Slot 5 and 6Slot 9 and 10

It consists of the following element:

● Beacon LED

● Console

● AUX

● Management Ethernet

● CompactFlash

● USB Ports

● CMP Ethernet

The Second- Generation Cisco Nexus 7000 series Supervisor Modules

1. Supervisor modules are compatible with Cisco Nexus 7009, 7010 and 7018

2. Interfaces

● Supervisor management port: 10/100/1000 Mb/s Ethernet port

● Console serial port: RJ-45 connector


ItemN7K-SUP2N7K-SUP2E
ProcessorXeon 2.13 GHzXeon 2.13 GHz
Number of coresQuad coreTwo quad cores
Kernel64-bit64-bit
Cisco NX-OS versionCisco NX-OS software 6.1Cisco NX-OS software 6.1
Memory12 GB (DDR3)32 GB (DDR3)
NVRAM2-MB battery backup2-MB battery backup


It mainly consists of the following elements:

● Beacon LED

● Console Serial Port

● Management Ethernet

● USB host ports

● USB Log Flash

● USB slot 0

● USB Flash Reset

● Board Reset Button

Cisco Nexus 7000 Product Identification Scheme

N7K – C7010 – FAB – 1

1-4 = (N7K-) Nexus 7000 family and series identifier

5 = (C) – Chassis and Chassis-dependent modules

6-9 = Chassis model

10 – Dash

10 – 16 – Defines chassis- dependent modules

= (FAB) – Fabric modules

= (FAN) – Fans

= (S) – System bundle

 N7 K – M1 32 XP – 12

In the above example,

● N7 stands for family name

● K stands for Series ID

● M1 stands for FE type. Gen

● 32 stands for ports

● XP stands for speed

● 1 stands for series of fabric

● 2 stands for number of fabric cards for full bandwidth; no redundancy

 N7K-M132XP – 12 10Gigabit Interface Rate Modes

● Mode configurable on per-port-group basis:

Port groups consist of four contiguous odd or even interfaces (for examples, {1,3,5,7}. {2,4,6,8}, {9,11,13,15}.                 and so on)

● Shared mode

All four interfaces in the port group share 10 Gb bandwidth

● Dedicated mode

One interface gets 10 Gb bandwidth

Three other interfaces in the port group are disabled

Dedicated mode interfaces: 1, 2, 9, 10, 17, 18, 25, 26.

Alok Rastogi

Alok Rastogi is a highly experienced data center administrator and certified trainer. Currently he is working with one of the top IT companies in India. He has done CCIE DC and have more than 15 years of working experience in top companies in India. He is working as a consultant with MNC's for long years. Working experience in data center ...

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