Meraki will be the STP root for only (maximum) vlan 1?

SOLVED
MicJameson
Here to help

Meraki will be the STP root for only (maximum) vlan 1?

Hello Meraki tech gods.

 

I have suspect information that " This Meraki device (MS225-24P-HW) will be the STP root for only (maximum) vlan 1."

Questions: 

1. Does Meraki device (MS225-24P-HW) run RSTP?

2. Is Meraki device MS225-24P-HW able to be the STP (and PVSTP) (and RSTP) root for more than vlan 1?

 

Thank you!

1 ACCEPTED SOLUTION
MarcP
Kind of a big deal

As written, it will be the root bridge in your network, means also for all known vlans on the switch. 🙂

 

Have a look into @Brash post bbelow as well:

 

Meraki switches run RSTP.

https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Configuring_Spanning_Tree_on_Meraki_...

 

They are interoperable with (but do not run) MST and PVST. The Vlan 1 requirement is if you connect a Meraki switch to a device that does PVST. The connecting device must have a PVST instance on vlan 1 in order for the Meraki switch to receive BPDU's.

https://documentation.meraki.com/MS/Deployment_Guides/Advanced_MS_Setup_Guide#PVST.2FPVST.2B





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5 REPLIES 5
MarcP
Kind of a big deal

Yes, it can run RSTP:
Switch -> Switch settings

MarcP_0-1651227510102.png

 

Will be the root for all vlans configured on it.

Thank you for your reply.

 

Can Meraki device MS225-24P-HW be the RSTP root for many vlans at the same time?

MarcP
Kind of a big deal

As written, it will be the root bridge in your network, means also for all known vlans on the switch. 🙂

 

Have a look into @Brash post bbelow as well:

 

Meraki switches run RSTP.

https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Configuring_Spanning_Tree_on_Meraki_...

 

They are interoperable with (but do not run) MST and PVST. The Vlan 1 requirement is if you connect a Meraki switch to a device that does PVST. The connecting device must have a PVST instance on vlan 1 in order for the Meraki switch to receive BPDU's.

https://documentation.meraki.com/MS/Deployment_Guides/Advanced_MS_Setup_Guide#PVST.2FPVST.2B





Brash
A model citizen

Meraki switches run RSTP.

https://documentation.meraki.com/MS/Port_and_VLAN_Configuration/Configuring_Spanning_Tree_on_Meraki_...

 

They are interoperable with (but do not run) MST and PVST. The Vlan 1 requirement is if you connect a Meraki switch to a device that does PVST. The connecting device must have a PVST instance on vlan 1 in order for the Meraki switch to receive BPDU's.

https://documentation.meraki.com/MS/Deployment_Guides/Advanced_MS_Setup_Guide#PVST.2FPVST.2B

GIdenJoe
Kind of a big deal

Meraki switches will not send BPDU's on the MAC address that PVST and RPVST use so if you are running in a mixed environment you will have a bit of a disconnect in some cases.

If you have a Catalyst switch as root for everything then you should be fine.
If you have the MS as root for RSTP then a Catalyst switch will be root for all the other VLAN's.
Your best course of action if you have to make your MS switch root for everything is run MST on the Catalyst switches and make sure that you are not root for any instance.  Best even limit your MST configuration to a single instance (IST).

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