Checking Switching capacity & Switching Redundancy

[Muhammad Hamid Ashraf]

Hi,

I have a Nexus 7010 with below result of show inventory command:

NAME: "Chassis",  DESCR: "Nexus7000 C7010 (10 Slot) Chassis "
PID: N7K-C7010           ,  VID: V01 ,  SN: TBM13154390

NAME: "Slot 1",  DESCR: "10/100/1000 Mbps Ethernet Module"
PID: N7K-M148GT-11       ,  VID: V06 ,  SN: JAF1245AKSM

NAME: "Slot 2",  DESCR: "10 Gbps Ethernet Module"
PID: N7K-M132XP-12       ,  VID: V05 ,  SN: JAF1315ALCN

NAME: "Slot 5",  DESCR: "Supervisor module-1X"
PID: N7K-SUP1            ,  VID: V07 ,  SN: JAF1313AGTJ

NAME: "Slot 11",  DESCR: "Fabric card module"
PID: N7K-C7010-FAB-1     ,  VID: V02 ,  SN: JAF1312ABSB

NAME: "Slot 12",  DESCR: "Fabric card module"
PID: N7K-C7010-FAB-1     ,  VID: V02 ,  SN: JAF1312ABSE

NAME: "Slot 13",  DESCR: "Fabric card module"
PID: N7K-C7010-FAB-1     ,  VID: V02 ,  SN: JAF1312ABMT

NAME: "Slot 33",  DESCR: "Nexus7000 C7010 (10 Slot) Chassis Power Supply"
PID: N7K-AC-6.0KW        ,  VID: V01 ,  SN: DTM1236002K

NAME: "Slot 36",  DESCR: "Nexus7000 C7010 (10 Slot) Chassis Fan Module"
PID: N7K-C7010-FAN-S     ,  VID: V01 ,  SN: FOX1312XA3K

NAME: "Slot 37",  DESCR: "Nexus7000 C7010 (10 Slot) Chassis Fan Module"
PID: N7K-C7010-FAN-S     ,  VID: V01 ,  SN: FOX1312XA34

NAME: "Slot 38",  DESCR: "Nexus7000 C7010 (10 Slot) Chassis Fan Module"
PID: N7K-C7010-FAN-F     ,  VID: V02 ,  SN: FOX1315XA3U

NAME: "Slot 39",  DESCR: "Nexus7000 C7010 (10 Slot) Chassis Fan Module"
PID: N7K-C7010-FAN-F     ,  VID: V02 ,  SN: FOX1313XA5A

I have two questions:

1. How I can tell the switching capacity of this switch by seeing this output?

2. How I can tell whether the switch supports the N+1 Redundancy or not?

Your help would be highly appreciated!

[Rajeshkumar Gatti · Accepted solution]

Hi,

The switching capacity of the switch requires a few calculations. It is derived using the switching capacity per slot multiplied by number of slot for each direction. So that value will be doubled when we consider both ingress and egress.

In your case you have 2 slots that are used and there are 3 fabric 1 modules. Each fabric 1 module will give you 46Gbps switching capacity per slot.

So 46 x 3 (fabric) = 138gbps per slot

138 x 2 slots (in use) = 276Gbps

Full duplex operation will double this capacity which is 552gbps

So that hopefully answers your first question.

For the power redundancy - check "show env power"

You will see the below snippet in the output. That tells you whether you are running in a redundant more or not.

Power Usage Summary:
--------------------
Power Supply redundancy mode (configured)                PS-Redundant
Power Supply redundancy mode (operational)               PS-Redundant

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/hw/nexus7000/installation/guide/n7k_hig_book/n7k_managing_sys_hw.html#pgfId-1051407

-Raj

[Muhammad Hamid Ashraf]

Thanks man. These were actually questions in WorkBook and the answer to Switching capacity was written 138 Gb/s. Can you please elaborate how fabric 1 will give 46Gbps?

[Rajeshkumar Gatti]

The fabric 1 rated capacity per slot is 46gbps as listed in the datasheet.

http://www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series-switches/Data_Sheet_C78-437760.html

See table 2 / performance row.

Also check out Cisco live presentation BRKARC-3470 (34-39). You can google it.

You will require a login for ciscolive website but that should be free. It has some more information on how the fabric module is connected which maybe be useful if you are trying to learn more about it.