Configuring basic stprstp functions you can configure stprstp on an ethernet network to ensure that the network has a loopfree tree topology. Consolidated platform configuration guide, cisco ios release 15. Understanding and configuring spanning tree protocol stp on catalyst switches. Complete the reflection questions that accompany the pdf file for. Now, this is a ciscobased spanning tree protocolimplementation that can create an instance per vlan. The following table lists some of the differences among the. Instructor alright, so lets mess around with some of the stp configurations in the real world. Stp configuration between cisco and hp hewlett packard. Network redundancy is a key to maintaining network reliability. Sur les switches cisco modernes, cest pvst per vlan spanningtree qui. To configure spanning tree protocol stp portfast on a switch running ios, run spanningtree portfast command as shown below. Cisco introduced several enhancements to the standard stp operation that were later incorporated in rapid spanning tree protocol rstp defined as ieee 802.
It also covers some of the potential redundancy problems and their symptoms. Configuring spanning tree protocol stp ftp directory listing. Cisco spanning tree protocol guide stp examples and. Stp will identify if there are any loops, and then disable or block. Actuallly were traffic that vlan and optimal path to get to hsrp active router. On each switch, display the spanning tree table with the show spanningtree command. In cisco 3550, the default spanning tree protocol is pvst. This chapter focuses on the protocols used to manage these forms of redundancy. Configuring spanning tree on meraki switches ms cisco. Create a switched network topology in packettracer 2. The main purpose of stp is to ensure that you do not create loops when you have redundant paths in your network. In addition, pvst per vlan spanning tree is enabled in the cisco switches by default. Now, the first thing we might want to do in our environment is choose a spanningtree protocol type. Understanding and configuring spanning tree protocol stp.
This factor of time is not an issue for many people, but it can cause problems for. To do so, the switches either use pagp or lacp if already in use, or cisco discovery protocol cdp if using manual configuration. Spanning tree protocol stp was developed to prevent the broadcast storms caused by. I wouldnt disable stp also bpdu filtering, if applied on a interface, will filter bpdus regardless of portfast operational state as stated, its the same as disabling spanning tree on that port and could result in spanningtree loops. By default, the bridge priority value is set to 32768 in all cisco switches. The command to configure this protocol is spanningtree mode pvst. I just know that there are three types of bpdus nfiguration 2. By default, a single spanning tree runs on each configured vlan provided.
To learn how to access an smb switch cli through ssh or telnet, click here. Catalyst 2960, 3560, 3750, 3850, 4500, 6500 mst was developed to reduce the number of spanning tree instances to reasonable value thus reducing cpu cycles needed to calculate stp for each vlan separately. Can someone please let me know the type of bpdus is stp and their funtion. How to configure and verify spanning tree protocol stp. Configure a password of cisco for console connections. This tutorial explains how to create and assign vlan, vlan membership static and dynamic, router on stick and spanning tree protocol stp in detail with practical examples in packet tracer. Root selection varies depending on the bid of each switch in your lab resulting in varying outputs. Switches running stp will build a map or topology of the entire switching network.
Through the meraki dashboard, you can configure networkwide stp settings including enabling rstp and setting the bridge priority on ms switches. Portfast is a cisco network function which can be configured to resolve this problem. Portfast is a feature which can be used to speed up convergence on ports which are connected to a workstation or a server which will not cause layer 2 loops. While configuring stp in datacenter on nexus devices its good to keep in mind the following things to consider. Its referred to as rapid because the convergence timeis a little faster than 802. In a bridge or switch topology for purposes of stp, bridges and switches are identical in operation, it. Packet tracer rstp configuration as you know, stp spanning tree protocol is the key protocol of switching world. Cisco ios uses the port priority value when the interface is configured as an access port and uses vlan port priority values when the interface is configured as a trunk port. Although this document uses cisco catalyst 55005000 switches, the spanning tree principles that the document presents are applicable to. You can also control port level stp settings including enabling or disabling rstp on a. Spanning tree protocol interoperability with cisco arista networks. Without manual configuration all switches have the same priority therefore it is up to the mac address to decide upon the root bridge. Cisco switching and spanning tree protocol stp basics. The switch with the lowest mac address value is elected as the root bridge.
Stp protocol cisco pdf cisco ios software configuration guide for cisco aironet access points. The endpoint can be a switch, server, router or any other device such as firewall or load balancers that support the link aggregation technology etherchannel. These sections include basic stp configuration information. Observe and explain the default behavior of spanning tree protocol stp, 802. Before proceeding, save as stp configuration lab1working. Spanning tree protocol is standardized as ieee 802. Spanning tree also allows a network design to include backup links providing fault tolerance if an active link fails. Spanning tree protocol stp is a layer 2 protocol that runs on bridges and switches. Spanning tree protocol stp is used to create one path through a layer 2 network. Stp is enabled by default on all cisco switches, for all vlans and ports.
Setting stp parameters that affect stp convergence stp cannot implement rapid convergence. This chapter describes how to configure spanning tree protocol stp. In stp spanning tree protocol there are blocking state, listenning state, learning state and forwarding state. With stp portfast, listenning state and learning state bypassed. By default, a single spanning tree runs on each configured vlan. To enable spanning tree, connect to your switch and type spanningtree mode while in global configuration mode. Vlan configuration commands step by step explained.
Hi we are in a process where we have to connect the hp switches to the cisco switches in the network. And with stp portfast, the host ports rapidly goes to forwarding state. If you have configured a new username or password, enter the credentials instead. Understanding and configuring spanning tree protocol stp cisco. A beginners tutorial on the function and purpose of stp spanning tree protocol in a local area network.
All models include 1g sfp uplinks, integrated mounting brackets, and a kensington security slot, making them ideal for rapid and secure deployment. We will focus on spanning tree protocol stp configuration and verification commands in this tutorial, as implemented on cisco. New ccna routing and switching 200125 ccna security and ccna voice best ever ccnp route300101 and 642902 and switch and also best rhcerhcsa linux notes for rhel6 and rhel 7 and also ubuntu and pfsense firewall pdf notes. However, when i issue the show spanningtree command, the output says, spanning tree enabled protocol ieee. In addition, switches check the settings on the neighboring switch. This chapter descibes how to configure spanning tree protocol stp on your access.
How to configure spanning tree protocol stp on catalyst. Spanning tree protocol stp in packet tracer part 1. The bridges send configuration bpdus through the ethernet and radio ports. The basic function of stp is to prevent bridge loops and the broadcast radiation that results from them. The device supports the following spanning tree protocol versions. This chapter describes how to configure the spanning tree protocol stp on portbased vlans on the catalyst 2960 and 2960s switches.
Licensing requirements and limitations for stprstp. The time spanning tree protocol stp takes to transition ports over to the forwarding state can cause problems. Hsrp configuration best cisco ccna ccnp and linuxcentos. Stp spanning tree protocol explained with examples. Vlan configuration guide supermicro l2l3 switches configuration guide 4 1 vlan configuration guide this document describes the virtual local area network vlan feature supported in supermicro layer 2 layer 3 switch products. This tutorial explains what the stp protocol is and how it removes loops from. Configuration of rapid stp part2 click here to download the. You can configure spanning tree protocol stp and rapid spanning tree protocol rstp on meraki ms switches. Break down the show commands to understand the root election process. In this sample chapter from scaling networks v6 companion guide, explore potential redundancy problems, symptoms, and protocols to manage them.
The spanning tree protocol stp is a network protocol that builds a loopfree logical topology for ethernet networks. The spanning tree protocol stp is designed to prevent layer 2 loops. The access ports of the switches that connect to hosts can configured with stp portfast. Configure stp spanning tree protocol in switches youtube. Stp configuration examples apply to some cisco catalyst switches like catalyst 2926g, 2948g, 2980g, 45004000, 55005000, and 65006000 switches that run catalyst os catos more related stp tips. Cisco nexus 5000 series switch cli software configuration guide ol1659701 1 configuring mst multiple spanning tree mst, which is the ieee 802. Spanning tree protocol stp spanning tree protocol stp was developed to prevent the broadcast storms caused by switching loops. Configure stp settings on a switch through the cli cisco. Learn how to create and manage vlan in cisco switch step by step. The neighbor must match on all parameters in this list except the stp settings. Stprstp configuration s12700 v200r010c00 configuration. Understand the configuration commands necessary to disable spanning tree protocol either globally on a switch or per port. Now as per our recent studies, we have figured out that the hp switches does not supp. Cisco says lets make layer 3 switch, that acting as hsrp active router for a vlan, lets make that the same switch that acting as the spanning tree protocol root bridge for that vlan.
Spanning tree protocol algorithm tutorial duration. All switches from cisco ship with spanning tree protocol stp enabled by default, but if stp is misconfigured for any reason, you can easily enable it. Cisco virtual port channel vpc is a virtualization technology, launched in 2009, which allows links that are physically connected to two different cisco nexus series devices to appear as a single port channel to a third endpoint. Datacenter stp considerations on nexus switches cisco. Refer to these documents for information on the configuration of stp on other switch platforms. Configuration of rapid stp part2 best cisco ccna ccnp. Shared spanning tree protocol or secure socket tunneling protocol stp spanning tree protocol. Therefore, the best configuration for stp interoperability is to have the bridge stp feature enabled and. Learn to configure and troubleshoot stp and rstp 4.