VSS - Virtual Switch Domain Uniqueness Doubt

Question

Hi everyone,
In the Cisco documentation, says that
You must configure the same virtual switch domain number on both switches of the VSS. The virtual switch domain is a number between 1 and 255, and must be unique for each VSS in your network.
My doubt is how can I understand the word network ?
I cannot use the same Virtual Switch Domain in a L2 Network, in a L3 Network, in a same customer Network ?
For example, if a customer has a lot of sites connected by a MPLS Wan, can I reuse the Virtual Switch Domain in each site ?
Thanks for Advanced
Andre Gustavo

Answer 1

You can re-use the virtual domain ID as long as the the two VSS chassis are not directly connecting to each other. Take a look at this link:
VVirtual Domain
Defining the domain identifier (ID) is the first step in creating a VSS from two physical chassis. A unique domain ID identifies two switches that are intended to be part of the same VSS pair that defines the VSS domain. Assignment of a domain ID allows multiple virtual switch pairs to be connected in a hierarchical manner. Only one VSS pair can participate in a particular domain. The domain ID can have a value ranging from 1 to 255 and must be unique when multiple VSS pairs are connected together. See Figure 2-2.
Figure 2-2 VSS Domain IDs
http://www.cisco.com/c/en/us/td/docs/solutions/Enterprise/Campus/VSS30dg/campusVSS_DG/VSS-dg_ch2.html
Hope this helps!
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