If your gateway goes down it is a good idea to have a backup that takes over immediately. Default hsrp configuration table 401 shows the default hsrp configuration. Hsrp hot standby routing protocol packet tracer activity. All of this is good stuff, but some things can easily be taken for granted. Cisco systems gateway load balancing protocol glbp supports arbitrary load balancing in addition to redundancy across gateways. Hi all, we have a dc with two internet providers bgp multihome managed by provider i have two cisco 1841 routers, each one connected to each provider. Default hsrp configuration, page 15 hsrp configuration guidelines, page 15 enabling hsrp, page 16 configuring hsrp priority, page 17 121235 active router for group 1 standby router for group 2 client 1 router a router b 10. This chapter describes how to use hot standby router protocol hsrp on the cisco me 3400e ethernet access switch to. Figure 51 shows the network topology for the configuration that follows, which shows how to configure hsrp using the commands covered in this chapter.
Well similarly we can have different hsrp groups for different vlans. Rfc 2281 cisco hsrp march 1998 using hsrp, a set of routers work in concert to present the illusion of a single virtual router to the hosts on the lan. This means that if the tracked interface of the active. This protocol is ciscoproprietary, but there is also a flavor for noncisco shops vrrp. A large class of legacy host implementations that do not support dynamic discovery are capable of configuring a default router. Siwtch a is active state of hsrp and switch b is in standby state.
If you want to read more about the details how hsrp is working, please the rfc2281. A single router elected from the group is responsible for forwarding the packets that hosts send to. There is much more to hsrp then this article covers including. Hsrp can be configured in the same way in cisco catalyst 3560 and 3650 multilayer switch vlan interfaces using cisco packet tracer. Configuring hsrp in cisco 6500 switches this document provides a sample configuration for hsrp in cisco 6500 series switches for high availability and for vlan redundancy. Hsrp, as well as virtual route redundancy protocol vrrp are considered highavailability network services that allow for almost immediate fail over to a secondary interface when the primary interface becomes unavailable. I used two cisco 3560 switches and gns3 to perform my labs. Hot standby routing protocol or hsrp, is a cisco proprietary protocol that allows two or more routers to work together to represent a single ip address for a particular network.
Their functionality is virtually the same but feel free to investigate this option if it is better for your situation. Cisco asa failover, redundant interfaces, catalyst hsrp and. The video is a reference to hsrp cisco proprietary protocol which can be used to create standby paths for routing to a single network using multiple routable paths. Hot standby router protocol, hsrp, is a cisco proprietary protocol to make multiple routers or switches appear as one gateway. Primary mission of hsrp is providing a redundant default gateway for end stations. Hsrp configuration using cisco catalyst 3560 and 3650 switches. Hot standby router protocol hsrp one picture summary. Hsrp works by simply configuring one or more routers to be part of hsrp group. I have configured hsrp in both 1841 on lan interfaces vip 192. Hsrp overview and basic configuration cisco community. Implementing hsrp thehotstandbyrouterprotocol hsrp isaniproutingredundancyprotocoldesignedtoallowfor transparentfailoveratthefirsthopiprouter. Hsrp is defined in the document rfc2281 and according to the definition in this document.
So with hsrp, short for hot standby router protocol, we are going to have two routers. One of the routers will be designated as the active gateway, and if its become unreachable there are other routers that ready to take its role as the active gateway. Learn how to set up standby groups, configure timers. Catalyst 3750x and 3560x switch software configuration guide, release 12. Observe how hsrp is capable of doing limited load balancing. Cisco ios router configuration commands cheat sheet pdf. In this example well take a look at troubleshooting hsrp. How to configure hsrp on cisco router step by step youtube.
We have two asas in a failover pair outside interface 10. Very simple hsrp configuration hot standby router protocol. So our main focus here is just the active and the standby. Configuring hsrp these sections contain this configuration information. Hsrp version 1 hello packets are sent to multicast address 224. Hot standby router protocol hsrp provides redundancy for ip networks, ensuring that user traffic immediately and transparently recovers from first hop router failures. When looking at the hsrp configuration of r1, we see that tracking has been enabled, but that it is not tracking the link to r5, only the link to r2. The standby version command is now emulated in catalyst layer 3 switches in cisco packet tracer 7. Hsrp allows multiple routers on a single lan to share a virtual ip and mac address which is configured as the default gateway on the hosts.
Sep 25, 2009 hsrp is defined in the document rfc2281 and according to the definition in this document. Aug 16, 2016 hsrp configure on cisco router default, hsrp configuration on cisco router, hsrp configuration on cisco router pdf, hsrp configuration on cisco router example, hsrp configuration on cisco router. Jul 16, 2019 hsrp configuration using cisco catalyst 3560 and 3650 switches hsrp can be configured in the same way in cisco catalyst 3560 and 3650 multilayer switch vlan interfaces using cisco packet tracer. The hot standby router protocol hsrp provides network.
Hsrp provides high network availability by providing firsthop routing redundancy for ip hosts on networks configured with a default gateway ip address. The hot standby router protocol hsrp is a first hop redundancy protocol fhrp designed to allow for transparent failover of the firsthop ip device. Learn how hsrp is activated on the network, and the specialized mac addresses used to facilitate functionality. Chapter 40 configuring hsrp, vrrp, and glbp understanding hsrp figure 401 typical hsrp configuration hsrp versions the switch supports these hot standby router protocol hsrp versions. Which protocol advertises a virtual ip address to facilitate transparent failover of a cisco routing device. Hsrp uses a virtual mac and ip address, which used in the event of a failure in any of the configured routers. Hsrp configuration for multiple vlan on cisco 4506. This set is known as an hsrp group or a standby group. Most networks have redundancy or at least should do. The hsrp group itself is assigned a virtual ip address, which hosts will use as their default gateway. Rtra will be configured as the active hsrp router by setting a higher hsrp priority. Catalyst 3750x and 3560x switch software configuration.
Hsrp configuration for multiple vlan on cisco 4506 switches. In the above example we have two cisco 65 switches with sup 720 with ios 12. Each interface in the hsrp group retains its local ip address. In this blog i will discuss the configuration of hot standby router protocol hsrp. Cisco hsrp configuration with example icnd2 200105. The protocol establishes an association between gateways in order to achieve default gateway failover if the primary gateway becomes. Cisco certified network professional ccnp exam 3005. Hello, i am running cisco ios xe software fuji, version 16.
Hsrp or hotstandby routing protocol is a mechanism developed by cisco to add redundancy at the gateway of a subnet. Rfc 2281 cisco hot standby router protocol hsrp ietf tools. The standard router redundancy protocol which is used by other vendors is vrrp virtual router redundancy protocol, however cisco has created its own proprietary protocol hsrp. This address will serve as the default gateway address for all hosts on the lan. I was recently troubleshooting an hsrp issue with two nexus 5500 switches that both were in the active state.
Cisco proprietary attributes hsrp load balancing no standard rfc 2281 transport ipv6 support default hello default priority multicast group udp1985 yes 3 sec 100 224. To provide redundancy, you also need to track the serial interfaces. One of the routers will act as primary active router while the other as secondary standby router. Unable to ping hsrp standby address on cisco 2500 and 4500 series routers. Discover how the hot standby routing protocol hsrp can be utilized to provide first hop redundancy by allowing multiple routers to collude and provide a single ip address to be used as a default gateway. Oct 22, 20 the video is a reference to hsrp cisco proprietary protocol which can be used to create standby paths for routing to a single network using multiple routable paths. Hsrp stuck in initial or active state on cisco 26202621, cisco 3600 with fast ethernet, or pa2feisl. A now i am confused as to why the answer is a and not b. Hsrp hot standby router protocol linkedin slideshare. Version 1 of the protocol was described in rfc 2281 in 1998. It provides redundancy for the layer 3 functions in our networks. When in operation, hsrp devices are configured into one of many states.
Using ciscos hot standby routing protocol hsrp you can configure a router to be an automatic backup gateway without having to change all of your network clients default gateways, by reconfiguring your dhcp server, and releasing all of the gateway addresses on your network. Hsrp configuration guidelines hsrp can be configured on a maximum of 32 vlan or routing interfaces. For theory, i used cisco configuration guides and the cisco press official certification guide. Ccna training hot standby router protocol hsrp tutorial. Note that only the commands specific to hsrp are shown in this example. But from what i learnt in hsrp v1, that the the last 2 hexi decimal is the hsrp group and in one of the questions it mentions. Configuration cisco du protocole hsrp avec vlan youtube. Hsrp vs vrrp vs glbp redundancy protocols in this article we will discuss the similarities and differences between the 3 first hop redundancy protocols supported by cisco devices. Hsrp state flappingunstable when you use cisco 26202621, cisco 3600 with fast ethernet, or pa2feisl. Hot standby router protocol hsrp is an automatic backup system for cisco systems. Ill demonstrate one issue but the methodology to troubleshoot it can be used for a variety of hsrp issues. Explore how tracking can be employed with preemption to allow the hot standby routing protocol hsrp group members to react to failed interfaces for optimal routing. It is a layer 3 protocol of the osi model, developed by cisco to provide redundancy at this level and at the gateway, between two or more cisco devices hsrp uses a virtual mac and ip address, which used in the event. Understanding and troubleshooting hsrp problems in.
Hsrp version 1 devices use the multicast ip address 224. It is a layer 3 protocol of the osi model, developed by cisco to provide redundancy at this level and at the gateway, between two or more cisco devices. Hsrp and vrrp allow multiple routers to participate in a virtual router group configured with a virtual ip address. Hsrp configuration best cisco ccna ccnp and linuxcentos. These are hot standby router protocol hsrp, virtual router redundancy protocol vrrp and gateway load balancing protocol glbp. Currently hsrpv1 is the default version when running hsrp on cisco devices. Cisco asa failover, redundant interfaces, catalyst hsrp. This chapter describes how to use hot standby router protocol hsrp, virtual router redundancy.
I was trying to add hsrp to a longrunning pair of nexus 5500s. Hsrpv1version 1 of the hsrp, the default version of hsrp. For now, we wanted to give you a good foundation for the configuration of hsrp on a cisco router. Hsrp will provide the clients with uninterrupted access to servers of site b. Hsrp configuration issues like standby groups and virtual ips not matching on the hsrp routers. How to configure gateway redundancy with hsrp in ios. The hot standby router protocol, hsrp, provides a mechanism which is designed to support nondisruptive failover of ip traffic in certain circumstances. First hop redundancy protocols configuration guide, cisco ios xe release 3s. Recall that the interface with the highest priority is elected the active router.
Which virtual mac address does hsrp group 37 use with default configuration. The idea of hsrp is using multiple routers to serve as a gateway using one virtual ip address. 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. In the procedures, the specified interface must be one of these layer 3 interfaces.
This can be in the form of additional cables crossconnecting devices, dual power supplies going to different feeds and hsrp on switches. R1 should be tracking the eth 01 link, not 00 to achieve the desired affect. Cisco router hsrp configuration two examples hsrp hot standby router protocol is the cisco proprietary protocol for providing redundancy in router networks. In computer networking, the hot standby router protocol hsrp is a cisco proprietary redundancy protocol for establishing a faulttolerant default gateway. Active this is the state of the device that is actively forwarding traffic. Hot standby router protocol hsrp is a cisco proprietary first hop redundancy protocol fhrp. Hot standby router protocol hsrp is a cisco proprietary protocol which allows several routers or multilayer switches to appear as a single gateway ip address.
Hsrp version 2 devices use the multicast ip address 224. These hosts then send packets for destinations outside of the lan to the virtual ip address. Hsrp is configured on the interface that is accepting traffic from hosts. Then we can have 1 switch the active router for the hsrp group 100, and the other switch which would be active router for a hsrp group 200.