Meraki mx spanning tree. Is it possible to change switch po...

Meraki mx spanning tree. Is it possible to change switch port priority for STP? I found only bridge priority configuration which affect to root-bridge election. B To MS. do Meraki switches not support a spanning tree per vlan? I can't imagine turning STP on, if this were the case, in a multiple VLAN. However that said, I don't use any of these settings because the Meraki already has RSTP on by default. VLAN hopping doesn't affect ports configured as access ports (they don't accept tagged frames). Uplinks MS to MX, what settings do I have to set? 3. Confirmed: Meraki switch technology cannot join MST cloud (Advanced MS Setup G ‎ Jun 5 2024 1:45 AM Hello Everyone Just got some mental block about MX HA Warm Spare design. I have had more HA system outages caused by spanning tree behaviour than by single-port or cable failures. It emphasizes the benefits of warm … In the other deployment where I had a mostly homogeneous Meraki network, I still had to disable spanning tree on the port to our ISP uplink and make sure our MDF stack was root or we saw all kinds of wonky behavior. for the most part we have a design down that we want and it seems fairly straight forward. I just moved a Meraki Hub/Catalyst Spoke network to Catalyst Hub/Catalyst Spoke. Information on enabling RSTP and setting the STP root bridge on a Cisco Meraki MS switch can be found in our Configuring Spanning Tree on Meraki Switches article. They kind of design looks great on paper but usually ends up in spanning tree hell with the occasional unplanned outage due to spanning tree issues. If the MX received BPDUs on the LAN, these BPDUs will be re-forwarded within the broadcast domain that they were received on. Based on Meraki documentation and best practice, both MX are connected to both switches and for this discussion, it is not relevant if the switches are standalone or stacked switches: But from a Spanning-Tree view, the topology looks like this: With the MX not participating in Spanning-Tree, we need to make sure that the switches can block one inte Meraki recommends hard wiring one of those ports to the other MX. Uplinks between MS to MS, what setting must be set? Device list MX64 = 2 MS120-24 = 2 Hi, I have noticed that spanning tree always see in event log in some of my switchport eventhough the connected device is Meraki MR. It is important to take note of the following deployment steps when installing an MS series switch in an existing switch infrastructure. Spanning-Tree scares a lot of people who are new to networking. What's the point of HA if it increases unplanned downtime. Ive noticed that despite setting up my core switch meraki as the root bridge, my 2960 is being selected as the root bridge for all the other vlans except vlan 1. Sadly, an alarming number of fairly senior IT staffers have never bothered to properly understand Spanning-Tree, so all kinds of bad ideas and bad configurations exist out there. If they are all left at What spanning tree mode are the Arubas set to? Meraki switches only support a single instance of spanning tree. In my mind you should only use these spanning tree options if the port is connected to a switch that doesn't ‎ Apr 16 2025 1:24 PM I would fundamentally change your design. Jul 3, 2018 · MX doesn't run STP itself, but it will forward BPDUs, so if you create any loops, they'd need to be resolved in the switching. One of the Cisco’s is the Primary Root bridge, the other Cisco is t Hello gods of tech! View pretty image attached. I have 3 switches setup to form a triangle, two Cisco catalysts and one Meraki. 0) 44 documents University: Cisco College. Configuring Spanning Tree on Meraki Switches (MS) Network-wide STP settings, including enabling RSTP and setting the bridge priority on MS switches, can be configured in the Meraki Dashboard. Some say the Spanning tree state but I say the stateful firewall database and gave the below explanation, am I correct, or anyone who can suggest differently? Explanation: Spanning tree packets are transmitted on the native VLAN, so that is why you shouldn't prune it. 20 on the switch management page, but manually configure a switch to fx. The best topology is to have the WAN appliances connected to the same downstream Layer 2 switch. Learn more about our products, services, solutions, and innovations. Redsector had a great answer. If you do go down this path make sure you adjust the spanning-tree root bridge priorities and make something like switch 1 the primary and switch 2 the backup. So for example LAN 1 goes to MS and LAN 2 goes to MX. It details steps for global and port-level STP settings, including enabling RSTP, setting bridge priorities, and configuring STP guards. Make sure the switches have the spaning-tree protocol enabled on the ports to mx/other swtiches ‘MS series switches can participate in spanning tree only when a spanning tree instance is running on Native VLAN of ALL switches. I have a mix meraki and ordinary cisco switch environment. ) and the edge the biggest (40960+). Configure > Switch Settings is where you can configure global switch settings such as the management VLAN, spanning tree for the switch stack, quality of service, and port mirroring. ’ Rapid Spanning Tree Protocol (RSTP) Rapid spanning tree protocol (RSTP)は、その名の通り、ポート転送状態への移行を高速化します。スイッチポートの状態が5つあるSTPとは異なり、RSTPには "Discarding", "Learning", "Forwarding" の 3 つの状態しかありません。 The reason for this is because there is an increased potential for a spanning-tree loop if the WAN appliances are also connected to the same layer 2 switch. I want to set up Fully Redundant as in the picture. Each switch is only connected to the two MX appliances, nothing between them (does there need to be, I’m beginning to think so?). All switches are running RSTP. I definitely don't configure them on Meraki-Meraki links because the expectation is to use RSTP. There are two MX appliances and three Aruba switches. Some say the Spanning tree state but I say the stateful firewall database and gave the below explanation, am I correct, or anyone who can suggest differently? Explanation: I am seeing about a 15 second delay passing traffic when Meraki RSTP fails back. For information on how to configure spanning tree on Meraki switches, check out our Configuring Spanning Tree on Meraki Switches article. 本質的にこれは Rapid Spanning-Tree と同等です。他社製プラットフォームとの相互運用性のため、Rapid Spanning-tree または MSTP（PVST や他社独自STPは不可）を使用してください。これにより互換性・機能面の問題を回避できます。 This can't be right. Jun 16, 2025 · The Meraki documentation provides an overview of Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP) configuration ensuring network stability and preventing loops. This is just based off of some reading I've done, reading articles of other people's experiences. I have experienced two many outages due to spanning tree connecting an MX to two different switches. Apr 7, 2025 · This article describes the functionality and expected behavior of LAN ports on MX and Z-series devices, and how they handle and interact with layer 2 traffic and protocols. am I missing something? I would fundamentally change your design. MX. I don't tend to dual-connect MXs. Some network equipment allows to change port priority, but I don't see this possibility for MS-120. Is this normal? or I have to check on my config. In Meraki Document, we all know that the recommanded diagram from Meraki for two MX HA and two switch is as below. I’m having issues with the LAN side of things. Best practice dictates the root bridge to be the core of the network, this can be accomplished by manually setting the priority of the switch selected to be the root bridge. I would not plug two switches into an MX. Some say the Spanning tree state but I say the stateful fir In order for Spanning Tree NOT to block the port to the PRIMARY MX, I had to switch the cables on the downstream switch so it would favor the PRIMARY MX port. WAN setup is no problem. The reason in this document says "there is an increased potential for a spanning-tree loop". P2P connection between (Meraki) CST root and MST switch root is STP flapping because superior BDPU conflict. What priority are they set to? The core should be the smallest number (say 4096), the distribution bigger (16384, 20480 etc. Meraki cannot be root in this scenario, it doesn't seem to support per vlan spanning tree. 1w) are both standards-based protocols. So my warning is, if you are seeing issues that dont make sense, check Spanning-tree I know I can set spanning-tree priority per switch by navigating to " Switch > Switch settings > STP configuration > Set the bridge priority for another switch or stack " in the dashboard, but I don't want to set anything, I just want to view and document current STP priority on each of the MS switches in our environment. I’m trying to create a fully redundant MX HA setup for a remote office. Choose one switch to be the core, make it the spanning tree root, and then plug all other switches into it. That way stp will be able to block the correct ports against the mxs. But I would like affect to root-port election. I would expect it to be much faster. The article discusses setting up high-availability (HA) pairs with Meraki MX security appliances using VRRP to minimize network downtime during hardware failures. Dec 23, 2025 · Spanning tree (IEEE 802. For further mitigation today I added "spanning-tree guard root" to all ports on the Catalyst 6509 and added this to the config: spanning-tree portfast edge bpduguard default I'm hoping this will help prevent spanning tree from going totally haywire again. I understand that the MX doesn’t do STP and forwards all Whatever reason in that setup, I believe there is a spanning-tree loop or something because the downstream VLANs couldn't ping the Meraki gateway and I lost connection to the switch. Issue: Meraki switch is CST root, and adjacent to MST cloud. About the connectivity issue, you'll need to have spanning tree enabled and also the switches connected directly to each other (same vlans configured as against the mx ports with the native vlan on mx) - preferably the one against your primary mx as spanning tree root. MS Spanning Tree Customization Lab Guide for Meraki Switches Course: Routing and Switching Essentials (Cisco CCNA 2 v6. We are torn between 2 choices, the spanning-tree state, and the stateful firewall database. Meraki & Cisco Spanning Tree I was wondering if anyone else was in this situation. Consequently, if you configure every port as an access port - except those going to other network devices, you have mitigated the vast majority of the risk. MXの冗長構成について MXはVRRPプロトコルを使用して高可用性（HA）ペアを構成することができます。セットアップする方法については下記のドキュメントにマニュアルがございますのでご参照いただけますと幸いです。こちらのコミュニティ記事では、HAペア構成時に予測される間違った構成や I have DHCP service running on the meraki MX, the path is: AP > IDF Switches > MDF Switch > MX It was already solved, a dummy thing happened, I have two separated infrastructures, one with meraki and one with cisco. 1. In addition, Native VLAN must be allowed on all Trunk ports running Rapid-PVST, so that BPDUs are seen by the Meraki switches in the topology. A and MX. This article describes the functionality and expected behavior of LAN ports on MX and Z-series devices, and how they handle and interact with layer 2 traffic and protocols. And, make sure spanning tree is properly configured on your switches. What settings do I need? 2. The MS series supports these protocols for maximum interoperability with other vendor switches. Mix meraki and cisco spanning tree Hi all. Probably best not to create them in the first place. MX doesn't participate in STP, but the STP packets will pass through the MX LAN ports so the switches can keep the topology loop free. So my plan at this point is to have all Meraki Switches not do any RSTP advertisements until we are done upgrading the whole network with Meraki switches. The MX does not run STP in any capacity, and will not exchange BPDUs with other switches or participate in the root bridge election process. Trunk all ports with the same vlans to the switches. 1D) and Rapid spanning tree (IEEE 802. Since the MXs used in the Lab are connected to a Cisco switch, they probably forwar Switch Spanning Tree Protocol (STP) configuration in Meraki networks provides administrators with comprehensive loop prevention and network topology management capabilities, enabling rapid spanning tree protocol (RSTP) implementation, bridge priority customization, convergence optimization, and network stability assurance. This is really slowing down my network. VLAN21 does that switch then send BPDUs using Currently have Cisco edge switches and have to replace core switching with Meraki. It is ideal for network administrators who demand both ease of deployment and a state-of-the-art feature sets. The Cisco side doesn't seem to support just standard RSTP. Additionally, it discusses Overview The Meraki MX250 is a Security & SD-WAN Appliance designed to provide SD-WAN Routing and UTM Firewall services for large Campus environments in addition to Secure VPN Concentration services for large VPN Topologies. What spanning tree mode are the Arubas set to? Meraki switches only support a single instance of spanning tree. If possible, I would recommend avoiding using the Meraki as the core switches. Meraki switch will need to be STP root but the Cisco equipment is configured with rapid-pvst. (the lowest port-ID in spanning tree) spanning tree so do not produce PBDU’s. Also from the diagram in a redundancy perspective it looks like you have 1 ISP providing /29 network. Make sure Spanning-Tree Protocol (STP) is enabled on the downstream switching infrastructure, as a properly-configured HA topology will introduce a loop on the network. Meraki MXはLACPやLink Aggregationをサポートしていません。 2022年10月時点で MX Layer 2 Functionality のドキュメントに明記されています。 Spanning tree is there to protect your network from loops. We have an issue that we have been arguing about with my peers on what information is shared between the MXs firewall in the High Availability Pair. Any heartbeat link directly between the MXs should be in a dedicated VLAN. The document provides guidelines for configuring Spanning Tree Protocol (STP) and Rapid Spanning Tree Protocol (RSTP) on Meraki MS series switches, emphasizing the importance of interoperability with other vendor switches. Can I do it? 1 : On what VLAN does a Meraki switch send its BPDUs ? Documentation seems to say "Vlan1" - But if you change the Management VLAN in the switch settings, does the Spanning-tree VLAN change (For BPDUs) ? 2: If I set VLAN fx. And below one seems not recommended by Meraki. We experienced many issues. Personally, I only connect an MX to a single switch. We're currently replacing our access layer switches with new Meraki switches. Cisco is a worldwide technology leader powering an inclusive future for all. . Something about having a mix of Catalyst and Meraki switches can apparently cause STP issues. pdtqxi, q6oif, wrpj, whrvhr, ew4fdt, umrc, f4gcni, hxme, g4ll4o, fxihk,