Meraki MS - Warm spare VRRP

[Pavan_Pawar]

Hello Experts,

I have configured the warm spare between Meraki MS switches and it's working fine but I could not find the VMAC anywhere in the switch, I know it starts with 88-15-44 but wanted to know the full virtual MAC of the switch.

I can find it by taking packet captures but want to know how Switch calculates it.

Any RFC to refer for it?

Regards,

Pavan

[alemabrahao]

The VRRP MAC address will not be available on the dashboard. But can be easily identified as the first 3 octets are always "cc:03:d9" and the last two octets are always of the primary MX as it sends the virtual mac as a part of the VRRP process.

[Pavan_Pawar]

As per the document, the first three octets would be 88:15:44, I want to know the calculation for the last three octets

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

[alemabrahao]

Have you checked the RFC?

https://www.rfc-editor.org/rfc/rfc3768.html#page-19

[alemabrahao]

[RaphaelL]

Take a packet capture , it should be the lact 3 octets of the switch that is currently the primary. 

[Pavan_Pawar]

I took the captures 

Primart MAC - 14:9f:43:a3:ad:e8",
Secondary mac- 14:9f:43:a4:09:88",
VMAC": "88:15:44:38:00:01"

so the calculation you mentioned does not match

[Pavan_Pawar]

@alemabrahao can you take a look?

[alemabrahao]

Meraki said that so you have to check with them. 

[Pavan_Pawar]

I will contact Meraki TAC