Warm Spare ( MS425-16-HW )

[Asher]

Hi,

I am using 2 MS425-16-HW switches and I am configuring Warm spare on it. 

1. Do i need to make a physical connection between Primary & Spare switch? If yes, can I use the QSFP port i.e 17 and 18 port to make the connectivity?

2. can I use Meraki 40GbE QSFP Cable to do the connectivity?

Thanks in Advance.

[PhilipDAth · Accepted solution]

1. Yes you need to make a physical connection.  Yes you can use the QFSP ports 17 and 18 - but you need to go into the Dashboard first and make sure you have disabled stacking on those two ports.

2. Yes you can use the Meraki 40Gbe QFSP cables.

[Asher]

Thanks it worked Warm spare is configured.

But I also need to configure OSPF  on the network. Seem like it doesn't support simultaneously.

What will be the possible way to advertise network while using H.A.

[PhilipDAth]

You are correct - OSPF and warm spare can not be used on an MS at the same time.

https://documentation.meraki.com/MS/Layer_3_Switching/MS_Warm_Spare_(VRRP)_Overview

"Warm Spare and OSPF cannot operate simultaneously."

Your best bet will be to stack the two switches.  Then you can use OSPF.  It will also provide default gateway protection.