VSS FAQ

[ifabrizio]

Dear All,

I have two WS-C6506-E with two WS-SUP32-GE-3B for each active and standby. They are the Core layer

The two 6506 are connected eachother with a etherchannel of 6 Gbits, the other Gigaports on the supervisor are used to connect thesistribution Layer.

The Fiber ottic that connect the two 6506 is a 50/125 OM3.

In the future I will need more speed between the two Core, I am thinking to increment it to 10GBit.

I' d like to implement the VSS, I started ony from few days to study the VSS architecture, I need to know is I am choosing the right supervisor and service module for my Core. I have choose:

Qty     Model

2     VS-S720-10G-3C(=)

4     X2-10GB-SR

2    WS-X6724-SFP

I wait for your suggestions.

Best Regards,

Igor.

[ajay chauhan]

Should be Good.

Maximum VSL Distance

Maximum VSL distance depends on X2 optics used for VSL 10 Gigabit Ethernet connections: • X2-10GB-CX4: 15m • X2-10GB-LX4: 300m • X2-10GB-SR: 26m (FDDI grade MMF), 300M with OM3 MMF) • X2-10GB-LR: 10km • X2-10GB-ER: 40km • X2-10GB-LRM: 220m over MMF • X2-10GB-ZR: 80km**

Supervisor Engine

Virtual Switching Supervisor 720-10GE (VS-S720-10GE-3C and VS-S720-10GE-3CXL) Note: Initial release supports a single supervisor engine per virtual switch member (or chassis). This restriction will be removed in a future software release.

Modules

• All 6700 series modules with Centralized Forwarding card (CFC) • All 6700 series modules with Distributed Forwarding Card (DFC) 3C or DFC3CXL Note: Support for WS-X6716-10G line card is available on 12.2(33)SXH2 and later version of software releases.

[Reza Sharifi]

Hi,

Since this is a new implementation for VSS, I recommend using the Sup-2T instead of Sup-720-VS. 

here is a good doc that covers the Sup, compatible line card, VSS, etc...

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/white_paper_c11-676346.html

HTH

[ifabrizio]

Thank you,  for the advices.

@Reza I will read the document pto understand why the Sup 2T is better, If you can summarize the document for me you help me much.

Best Regards,

Igor.

[ifabrizio]

I have found a unfocial document tht copare the two sup:

http://itknowledgeexchange.techtarget.com/network-engineering-journey/cisco-catalyst-sup720-v-s2t/

The Sup 2 T seems better than Sup720.

[Reza Sharifi]

Igor,

Another important part is the processor. The 2T comes with Dual core with each core @ 1.5 Ghz, while 720-VS comes only with 1 600 Ghz.

HTH