How does work VSS

[InfectedGTi180]

Hi,

I have 2 4500X-16SPF+ and i want to use VSS but i'm asking if the management of port is the same than a StackWise.

For exemple, can I manage 32 ports or just 16 ? Does it works like Teen 1/0/1-16 and Teen 2/0/1-16 ?

Thx

[Reza Sharifi]

Hi,

Yes, that is correct. Once you configure them as VSS, all ports will be part of VSS

te1/0/1-16 and 2/0/1-16

HTH

[InfectedGTi180]

Ok thx. And when i connect them with 2 sfp+ cable, ans configure vss, i have a 20g link ?

[Reza Sharifi]

Yes, you will have a 20Gig Portchannel.  That is your VSL link.
 

[InfectedGTi180]

Ok, but i don't understand.

With Stackwise + we have 80Gbits Bandwidth ...

What is the interest of VSS ?

Does I have other option ?

[Reza Sharifi]

With 4500x you can only use VSS.

You can always add more ports to the Portchannel.

[Reza Sharifi]

Here is good doc on VSS

Q. What is a VSS1440?

A. VSS1440 refers to the VSS formed by two Cisco Catalyst 6500 Series Switches with the Virtual Switching Supervisor 720-10GE. In a VSS, the data plane and switch fabric with capacity of 720 Gbps of supervisor engine in each chassis are active at the same time on both chassis, combining for an active 1400-Gbps switching capacity per VSS. Only one of the virtual switch members has the active control plane. Both chassis are kept in sync with the interchassis Stateful Switchover (SSO) mechanism along with Nonstop Forwarding (NSF) to provide nonstop communication even in the event of failure of one of the member supervisor engines or chassis.

http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-virtual-switching-system-1440/prod_qas0900aecd806ed74b.html

[InfectedGTi180]

Thx