topic Re: Fabric Implementation in ExtremeSwitching (VSP/Fabric Engine)

Fabric Implementation

dazza — Sun, 18 Feb 2024 08:37:20 GMT

Hello!

I have a new job and one of the first tasks is to implement Fabric Connect. The previous admin had ordered 10 5420 switches (which are onsite) and I have a design of sorts that has 3 stacks in an EAPs ring (of sorts). Initially I was confused as I expected to have 1 or 2 7720 switches too (SPF aggregation switch) to form a leaf and spine network.

I understand that stacking can be done only in pairs via the QSFP slots on the 5420? (therefore a redesign is needed)

I just wanted to run my initial findings by the community as I am confused how a consultation with extreme partners prior to my arrival would result in a triple stacked EAPs ring being purchased.

Any feedback is greatly appreciated as I am about to revert to traditional IP networking solution!

Darren

Re: Fabric Implementation

dazza — Thu, 22 Feb 2024 21:44:32 GMT

I have a redesign for the network using 2 distribution and 6 access switches. It can work if the answer to the following question is yes, can the U1/2 links be used on the 5420 in VOSS to interconnect the distribution switches each 5420 has a 4 SPF for connections?

Re: Fabric Implementation

dazza — Sat, 24 Feb 2024 07:55:09 GMT

Historic information found is that the documentation states the SFP-DD ports can only be used in VOSS without fabric-connect.

Others asking about it here 5420 stack ports VOSS : r/ExtremeNetworks (reddit.com)

Re: Fabric Implementation

EF — Wed, 28 Feb 2024 20:14:13 GMT

Hi Dazza,

The 5420 switches are universal hardware so it can be used with two diferents software families:

- EXOS
-VOSS

It can be selected at the first boot or then it can be chage with a special procedure.

If you want to uses stack topology you must run EXOS, VOSS doesnt support stack config.

Best!!!

Re: Fabric Implementation

dazza — Thu, 29 Feb 2024 18:31:27 GMT

Sorry should have been clear, it is using the VIST/SMLT clustered pairs inconnecting using the SFP-DD ports.

Guy on fabric course I said they tried it and it did not work, will file a case with GTAC Thanks