Thursday 2 October 2014

Cisco Nexus 7000 Product Family & Calculating Switch Performance




Hardware Components:

Chassis: 


Four chassis form factors:

● 18-slot chassis with 18 front-accessible module slots and side-to-side airflow in a compact horizontal form factor with purpose-built integrated cable management.
● 10-slot chassis with 10 front-accessible vertical module slots and front-to-back airflow and an integrated cable management system.
● 9-slot with 9 front-accessible module slots and side-to-side airflow in a compact horizontal form factor with purpose-built integrated cable management.
● 4-slot chassis with all front-accessible module slots and side-to-back airflow in a small form factor with purpose-built integrated cable management.

Supervisor and Fabric Modules


Cisco Nexus 7000 Supervisor Module Connectivity and Indicators

High-performance dual-core Intel Xeon processor 
Two supervisor modules operate in active and standby modes with stateful supervisor failover to enhance total system availability. Cisco NX-OS Software Release 4.0 or later (minimum)
Part Number : N7K-SUP1

 Cisco Nexus 7000 10-Slot Fabric Module







The Cisco Nexus 7000 Fabric Modules (Figures 1 and 2) for the Cisco Nexus 7000 Chassis are separate fabric modules that provide parallel fabric channels to each I/O and supervisor module slot. Up to five simultaneously active fabric modules work together delivering up to 230 Gbps per slot.
Performance : 46 Gbps per Fabric slot
Product Name: N7K-C7010-FAB-1















Similar to Above Fabric Module but Up to five simultaneously active fabric modules work together delivering up to 550 Gbps per slot.
Performance : 110 Gbps per Fabric slot
Product Name: N7K-C7009-FAB-2

Fab2 Performance capacity


How to calculate Switch performance with Fabric Module

Example: 
As per Cisco Data Sheet The Cisco Nexus 7000 18-Slot chassis delivers 18.7 Tbps or 2.33 TBps. 

Lets Calculate how;
18 Slots - 2 SUP slots = 16
Fab2 per slot = 110 Gbps, it containts 5 Fabric slots, 5x110 = 550 Gbps
16 Slots x 5 Fabric slots = 16x550 = 8800Gbps
8800 Gbps x 2 (ingress+egress) = 17600 aprox 18 Tbps.

I/O Modules
M1 and M2 Series Line Card
F1, F2 and F3 Series Line Card

The main difference is that the M1 cards will do major and all Layer 3 related features and operations,    The M2 cards will give the data center the expansion to run 40G and 100G infrastructure. 

The initial series of line cards launched by cisco for Nexus 7k series switches were M1 and F1. M1 series line cards are basically used for all major layer 3 operations like MPLS, routing etc, however, the F1 series line cards are basically layer 2 cards and used for for FEX, Fabric Path, FCoE etc. If there is only F1 card in your chassis, then you cannot achieve layer 3 routing. You need to have a M1 card installed in chassis so that F1 card can send the traffic to M1 card for proxy routing. The fabric capacity of M1 line card is 80 Gbps. Since F2 line card don’t have L3 functionality, they are cheaper and provide a fabric capacity of 230 Gbps.
Later cisco released M2 and F2 series of line cards. A F2 series line card can also do basic Layer 3 functions, however, cannot be used for OTV or MPLS.  M2 line card's fabric capacity is 240 Gbps while F2 series line cards have fabric capacity of 480 Gbps.



M1 series modules:
M2 series modules:
10G module: N7K-M224XP-23L
40G module: N7K-M206FQ-23L
100G module: N7K-M202CF-22L
F1 series modules:1G/10G module: N7K-F132XP-15
F2 series modules:1G/10G module: N7K-F248XP-25
F2e series modules:1G/10G modules: N7K-F248XP-25EN7K-F248XT-25E
F3 series modules:40G module: N7K-F312FQ-25
100G module: N7K-F306CK-25





1 comment:

  1. They are just worth buying because of its mainly VSS (Virtual Switching System) and other features.

    ReplyDelete