Nexus 7000 - Integrate FEX - Identify ASIC ID

[schlingloff]

Hi *,

in reference to this the following guide, i'd like to identify the Asic-ID, to plan the integration of a FEX 2248PQ to an F2 module interoperated in an F2e M1-xl context-type.

http://www.cisco.com/en/US/docs/switches/datacenter/nexus2000/sw/configuration/guide/rel_6_2/b_Configuring_the_Cisco_Nexus_2000_Series_Fabric_Extender_rel_6_2_chapter_010.html

There is a note in the topic "Associating a Fabric Extender to an F2-Series Module"

Each port in the ASIC has an index. Allow only ports with similar indices across ASICs to be added to a port channel.
For example, if port 1 has an index of 1 and port 2 has an index of 2, the following ports are supported and not supported:
Supported: Port 1 of ASIC 1 and port 1 of ASIC 2 are added to a port channel. 
Not supported: Port 1 of ASIC 1 and port 2 of ASIC 2 to form a port channel. 
A set of ports from an ASIC that has an index sub-set S, such as  {1,2,4}, is allowed to be added to a port channel only if the port  channel has an equivalent or an empty set.

So is there a way to get the asic-id as mentioned above with some appropriate show commands?

Please be adviced that the FEX are not installed yet.

I need to check beforehand if the cabling is correct.

Some helpful answers within the next few day would be very appreciated.

Thank you in advance

Sven

[Jon Marshall · Accepted solution]

Sven

Have a look at this article and hopefully it will answer your questions -

http://www.netcraftsmen.net/blogs/entry/using-fex-with-the-f2-card-in-a-nexus-7000.html

Jon

[Steve Fuller · Accepted solution]

The link from Jon is exactly what you need, but as an additional note, you can determine the port-grouping of any Nexus 7000 I/O module with the show interface ethernet / capabilities command.

Towards the end of the output you'll see "Port Group Members" listed which is a list of the ports that are part of the same group as the interface you entered with slot/port.

Regards

[embowers1]

Am I missing something here? Which is very possible.  Would it not be easier to just look at the Carmel  ASIC info to see what interfaces are mapped to what ASIC?

[embowers1]

sh hardware internal carmel all

[schlingloff]

Well "show hardware internal carmel all" doesn't seem to be supported on an n7k. I've tried it on m1xl and f2 context-types...no luck at all.

I only saw that inside the n5k documentation

[embowers1]

Well let me remove foot here. Been a bit since I was in a 7k. Didn't realize that command was not supported there.

[Steve Fuller]

That's correct. The Carmel ASIC is the port-controller (UPC) on the Nexus 5500 series switches. The Nexus 7000 F2 cards use Clipper, Eureka and Naxos.

Regards

[schlingloff]

Hi Jon

Hi Steve,

thank you for your quick responses.

I just wanted to make sure, using an apropriate show command, that the "so called" asic-id are not random/weird assigned.

That link was very helpful and well explained.

Basically I'd hoped that Cisco would be a bit more specific about that note ;-)

Best regards