Nexus 7k vdc memory allocation

[chuck-jenkins]

Is there a page, table that will help me deside how much memory to give a vdc that I have created and added ports to. I know there are questions about route table sizes and so forth. Where can I find this information.

Thank you

[Reza Sharifi]

I don't think you can allocate CPU or memory per VDC.

See table-1 in this link:

http://www.cisco.com/en/US/prod/collateral/switches/ps9441/ps9402/ps9512/White_Paper_Tech_Overview_Virtual_Device_Contexts.html

HTH

[liam_b]

You can allocate CPU shares depending on sup and NX-OS version.

It is not overall memory that is allocated, rather it can allocate a share of the unicast/multicast IPv4/IPv6 route table memory. Do you know how many routes and next hops per route you expect on a per-VDC basis?


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[Reza Sharifi]

What Sup and what version do you need to allocate CPU per VDC?

Also, is there a config guide or documet describing how it would be done?

[liam_b]

CPU shares has been available since 6.1(1) on the Sup 2 / 2e. All configuration and related information can be found in the VDC configuration guide here:

http://www.cisco.com/en/US/partner/products/ps9402/products_installation_and_configuration_guides_list.html

To find out the amount of memory required to support a specified number of routes and next hops per route use the "show routing memory estimate routes num_of_routes next-hops num_next_hops" command.

[chuck-jenkins]

Thank you for the information. It was a great help.


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