C9500 stackwise virtual

[Yadong Song]

Hi,

For some reason, we will need to do stackwise virtual for 2* C9500 Core switch and another 2* C9500 switches, the way just like double-sided vPC, since I have not done that before, can anyone help me that if it can work in that way? 

[Flavio Miranda]

@Yadong Song 

 This is not possible. What they are trying to do is use 9500 to replace Nexus, probably due the high cost of Nexus.

You can check on the following Cisco doc.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9500/software/release/17-8/configuration_guide/ha/b_178_ha_9500_cg/configuring_cisco_stackwise_virtual.html

"Overview of Cisco StackWise Virtual

Cisco StackWise Virtual is a network system virtualization technology that pairs two directly connected switches into one virtual switch. The switches in a Cisco StackWise Virtual solution increase operational efficiency by using single control and management plane, scale system bandwidth with distributed forwarding plane, and help in building resilient networks using the recommended network design. Cisco StackWise Virtual allows two directly connected physical switches to operate as a single logical virtual switch using an Ethernet connection."

[Mark Elsen]

    - You can have a look at these : https://community.cisco.com/kxiwq67737/attachments/kxiwq67737/6016-discussions-lan-switching-routing/468722/1/q-and-a-c67-738577.pdf
      https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-9000/nb-06-cat-9k-stack-wp-cte-en.html
      https://community.cisco.com/t5/networking-knowledge-base/stackwise-virtual-tips-and-tricks/ta-p/4922633

  M.

[Yadong Song]

Thank you guys for your input, i believe it works as what I found from the whitepaper:

https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-9000/nb-06-cat-9k-stack-wp-cte-en.html

Multiple deployments of StackWise Virtual can exist in a given network design, adding to the availability and scalability of the network. As a result, Cisco requires that you use unique virtual switch domain identifiers for each pair of StackWise Virtual switches.