VSS with SUP 2T

[adamgibs7]

Dears

I have 2 no's 6509 chassis in VSS with sup2t and ASA-SM installed, as I know that the dataplane is active for both switches so the cisco says that I we will get the throughput of 4.0 tbps but the ASA-SM only supports 20 gbps, and all vlan interface are created on ASA-SM module so there all bottleneck happens, Customer is not ready to move any vlan interface to the 6509 MSFC by bypassing ASA-SM.

so how the ROI should be explained to the customer of SUP2T with ASA-SM if installed.

thanks

[Jon Marshall]

I'm not sure what you are asking.

Two sups in each chassis does not double the capacity of each chassis ie. it is the same as with a single supervisor per chassis except you get twice the uplinks capacity on the supervisor because you have two of them per chassis.

Is this what you were asking ?

Jon

[Jon Marshall · Accepted solution]

per slot 80gbps half duplex without over subscription and per slot 160Gbps full duplex with over subscription.

Actually no not really.

It is 80Gbps in one direction. So for full duplex ie. both directions it is 160Gbps.

Still no oversubscription.

However a module with 16 x 10Gbps port can generate 160Gbps of traffic in one direction and this would be oversubscription.

The difference is for full duplex you count traffic going both ways.

Jon

[Jon Marshall]

You edited your post while I was replying.

In answer to first point it depends on whether you are buying the VSS because you need the throughput between the vlans routed on the VSS.

That was the point I was trying to make ie. if the customer has said they need high throughput between their internal vlans and you say a VSS is the solution and then you introduce the ASA as a bottleneck they may not understand why you recommended VSS as a solution.

But it may be a good choice for future proofing if you think at some time the customer will not need to firewall all the vlans.

Note also if you are talking about buying them now you may want to look at the 6800 rather than the 6500 as these are the 6500 replacements although I don't know whether they support the ASA modules.

Jon

[Jon Marshall]

See this link for VSS benefits (3rd question) -

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

Jon