Redundant links recommendation

[Chris_78]

Hi Guys

We are trying to setup our second floor with redundant Internet links as shown on the graph below. We have 2 cables from Floor 1 to Floor 2 my initial idea is to hook them and playing with STP priority ... any better ideas are greatly appreciated!

Thanks!

Chris

[Chris_78]

@Reza Sharifi  Thanks Reza! I think we are on the same page, I will test and post later!

[Chris_78]

Hi Reza

Quick question - my NXOS1 and NXOS2 are VPC providers and they are connected between themselves with peer-link etc, the same is valid for my other pair of switches NXOS4 and NXOS5 are VPC providers. So can I count on STP in that scenario for the links between the switch pairs?

[danjmcintyre]

Is there a specific reason you can't use another vPC between the 2 sets? If any of the 4 switches went down, or one of the links, everything would use the other link. 

[Chris_78]

@danjmcintyre 

Hi Danjmcintyre 

No there is no reason, I wasn't aware you can have VPC in this setup, is that actually possible please confirm!

[balaji.bandi]

yes vPC possible, please refer the document which was reffered before.

if you have enough ports and fibre leads good to have setup as mentioned for fully redundant.

[Chris_78]

@balaji.bandi 

Hi Balaji

Can you please confirm! This is the correct setup - I have only 2 cables from floor 1 to floor 2 and there is no additional connections allowed/possible between both floors. 

[balaji.bandi]

I was suggesting 4 cables from Floor 1 to Floor 2, it is good to have 4 cables as a best design.

if not you can use 2 cables to Straght to uplink switch rather cross ( Cross can also be done, but it is easy for your design wise.

[Chris_78]

@balaji.bandi 

Hi Balaji

In our case we have only 2 cables and we cannot add more. Can we go VPC between the floors or we simply hook them and play with STP priorities?

[balaji.bandi]

Both is possiblem depends in requirement, if vPC availble i prefer with vPC. so you can utilise the links 100%

[Chris_78]

@balaji.bandi 

Hi Balaji

Please confirm if this setup is valid!

[Reza Sharifi]

I don't see how that is valid. See figure 9 in this link.  This is your design. It requires 4 links.

https://www.cisco.com/c/dam/en/us/td/docs/switches/datacenter/sw/design/vpc_design/vpc_best_practices_design_guide.pdf

HTH

[Chris_78]

@Reza Sharifi  thanks Reza that's what I thought but i was just trying to understand Balaji @balaji.bandi 

I'm just going to do what you recommended - trunks and STP priorities on NXOS1 and NXOS2 - STP priority is actually already setup on these switches as you recommended! 

Thanks!

Chris

[balaji.bandi]

But i have suggested vPC with picture modifies, also commented as below  - this means, where possible you can implement vPC, where not possible you go traditional way - looks like this message gone in wrong way i was guessing..

"Both is possiblem depends in requirement, if vPC availble i prefer with vPC. so you can utilise the links 100%"