Hsrp can be configured in the same way in cisco catalyst 3560 and 3650 multilayer switch vlan interfaces using cisco packet tracer. The hold time value is 10 seconds or three times the hello timer. And also noticed this when the hsrp state was checked. The hsrp standby ip address is a virtual mac address which is composed of 0000. Each router has its own ip configured to its lan interface 192. Configuration and verification for an hsrp group 36. This actually takes you into a sub configuration mode as shown below. Below is an example scenario showing how hsrp can be configured to meet the indirect link failures by use of ip sla configuration with hsrp. Configure and cable the ethernet interfaces as indicated in the above diagram. So, what we have are pcs connected to a single switch each, using vlans specific to the two geographic areas separate suites in the facility so hsrp is actually pointless. As you know, hsrp only has 1 active router for a group leaving the other routers in the group not doing anything. Unless otherwise noted, the term switch refers to a. If you would like to see an example hsrp configuration in a lab, click here. Hsrp stands for hot standby router protocol, and what it does is create a virtual ip address which hosts will use as the gateway address.
If serial 00 goes down, the router priority will be decremented by the default 10. Well good news, weve done the research for you and provided the stepbystep hot standby router protocol or hsrp configuration below. An example of hsrp misconfiguration is the mismatched of hsrp standby group and standby ip address. For example, we might assign interface vlan 100 to hsrp group 100, and interface vlan 200 to hsrp group 200.
Hsrp will track the availability of interface serial 00. Hsrp hot standby routing protocol packet tracer activity. This virtual ip will be used by all enddevices as their default gateway. This means that hsrp is monitoring the state of interface f10.
Siwtch a is active state of hsrp and switch b is in standby state. By configuring one of the redundancy protocols hsrp, vrrp, glbp we can achieve just that. For this scenario we will use a topology consisting of just two routers. You will then be able to enter your configuration similarly to in ios. C h a p t e r 441 catalyst 3750x and 3560x switch software configuration guide ol2152101 44 configuring hsrp this chapter describes how to use hot standby router protocol hsrp on the catalyst 3750x or 3560x switch to provide routing redundancy for routing ip traffic without being dependent on the availability of any single router. The protocol consists of virtual mac and ip addresses that are shared between two or more routers that belong to the same hsrp read more.
Hsrp configuration we want switch sw2 to be active hsrp router for this topology, and the virtual ip address thats we gonna be servicing is 10. Hot standby routing protocol hsrp lab hot standby routing protocol hsrp lab basic objectives. 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. An alternative to hsrp is vrrp virtual router redundancy protocol which is. R1 should be the active router and r2 should be standby. Any examples, command display output, network topology diagrams, and other figures. This virtual address is free to move between configured. You can have multiple hsrp standby groups on the same interface. First, be sure that you have enabled hsrp on the device.
Highavailability seamless redundancy in the factory. September 10, 2010 the hot standby router protocol hsrp is a first hop redundancy protocol fhrp designed to allow for transparent failover of the firsthop ip router. Ensure you can ping the loopbacks of the isp router from the host router. Two things you should check first are the physical layer connectivity and verify the hsrp configuration. The hosts that use the hsrp address as a gateway never know the actual physical ip or mac address of the routers in the group. Cisco router hsrp configuration two examples hsrp hot standby router protocol is the cisco proprietary protocol for providing redundancy in router networks. Routers r1 and r2 have hsrp configured on lan side hsrp ip. 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. In the above example we have two cisco 65 switches with sup 720 with ios 12. I mentioned track configuration which can trigger the active router for any of the forwarders to transition to listen state. A set of netvisor switches configured as a single virtual entity. September 30, 2017 october 12, 2017 by engineer khan. In the world of first hop redundancy, we have plenty of choices. This means that if a failover occurs upstream bgp peering is lost, the wan circuit fails, etc.
Hsrp allows building resiliency in the network gateways wherein should an active router fail in a hsrp group, the standby router assumes the role of the active router and continue routing packets. If router a is the hsrp active router and then loses a link, which causes it to become standby router, and then the link comes back, the delay command causes router a to wait before it becomes active again. We will use the figure below as an example network topology. In part two, well optimize the design by adding some load balancing. You might just find questions for frame, the functions of this. When this router fails, the standby router takes over. Track interface fastethernet10 state up decrement 10. Oct 12, 2014 within a basic hsrp configuration, the only way a hsrp switchover occurs is when the heartbeat between the active router and the standby router is broken.
Another thing you should check is the mismatched vtp modes. In order to make the right decision for your network you should know the basics regarding all three. Vrrp and varp configuration commands chapter pdf get in touch today. Configure the virtual ip address of hsrp as default gateway on the host router. I am now writing them up on this website so that they might be useful to others. And lets take a look at how you would configurea very basic configuration of hsrp with,if you look in the upper right hand side,those two routers in our. In this example, we will use two routers as member of hsrp group. These hello messages are sent to the multicast address 224. 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 which works very well on cisco routers. Hsrp stands for hot standy routing protocol which provides automatic router backup when an active router in the group fails. Within a basic hsrp configuration, the only way a hsrp switchover occurs is when the heartbeat between the active router and the standby router is broken.
Hsrp provides gateway redundancy by sharing ip and mac addresses between redundant gateways. You must configure each gateway in a glbp group with the same group number, and at least one gateway in the read more. For example, when the east router standby interface fastethernet 01 goes down and then comes back up, east will resume the role of the active router. Jul 06, 2012 hsrp is on the cards today, and im going to break it into two parts. Hsrp emergency response issue paper draft 25 august. In part 2, you will configure ciscos hot standby routing protocol hsrp, and in part 3 you will configure ciscos gateway load balancing protocol glbp. The standby version command is now emulated in catalyst layer 3 switches in cisco packet tracer 7. In this scenario, on site a multiple clients reside on the fast ethernet segment of 198. First hop redundancy protocols configuration guide, cisco ios xe.
Hsrp configuration for multiple vlan on cisco 4506. Commonly found at the distribution layer, hsrp uses a virtual ip and mac address which a backup gateway will take control of in the event of failure. At a 3 second interval, routers send hsrp hello messages to become aware if the other is up or down between active and standby. The only ip address you have to enter in hsrp configuration is the ip address of the virtual router. Therefore, the configuration to enable hsrp on r1 is as follows. Configuring hsrp thehotstandbyrouterprotocolhsrpisafirsthopredundancyprotocolfhrpdesignedtoallow fortransparentfailoverofthefirsthopipdevice. This means that if the tracked interface of the active. For example, with the standby preempt delay minimum 30 command, it waits for 30 seconds for the router to become active. I used two cisco 3560 switches and gns3 to perform my labs. Hsrp configuration example for the example in this section, the topology shown in figure 1 is used. Find answers to hsrp configuration from the expert community at experts exchange. Configure the ip addresses on the routers as follows. The host standby router protocol hsrp is a cisco proprietary protocol, as detailed in rfc 2281.
This post is part of a series of revision notes i put together and used for studying ccnp switch concepts. How do you configure hsrp on a nexus 7000 series switch. There can be only a single active and single standby router in a hsrp group. Hsrp configuration using cisco catalyst 3560 and 3650 switches. Hsrp overview and basic configuration cisco community. Keep in mind that one or both of these routers could be multilayer switches such as a 6509 or 3750 as well. If the interface goes down, then the priority of hsrp will be decreased by 10. Lets get some hands on informationon how this all works. Hsrp is configured between two devices which each have a single interface that goes towards the core of the network, an interface that connects them together not an hsrp requirement, and an interface that connects into a common subnet. Routers r1 and r2 have hsrp configured on lan side hsrp ip 192. I know in ios the commands are in the interface configuration, for example. This document provides a sample configuration for hsrp in cisco 6500 series switches for high availability and for vlan redundancy.
The change will occur even if west is currently the active hsrp router. When the hsrp active routers f10 interface goes down, make sure its no longer the active hsrp router. Only the virtual ip address that was created within the hsrp configuration along with a virtual mac address is known to other hosts on the network. The hot standby router protocol hsrp provides network redundancy for ip networks. One of the routers will act as primary active router while the other as secondary standby router. Hsrp no longer for the weak of heart the ccie journey. Concept notes september 30, 2017 october 12, 2017 by engineer khan this post is part of a series of revision notes i put together and used for studying ccnp switch concepts. May 23, 2014 and also noticed this when the hsrp state was checked. Now weve been working through the theoryand talking about what everything does. A virtual ip is an ip address that is shared for example by a vrrp instance between. Hsrp hot standby routing protocol is a cisco proprietary protocol to create a virtual gateway ip address between two or more routers. Two diverse internet connections running a bgp failover setup between them. This chapter describes how to use hot standby router protocol hsrp, virtual router redundancy protocol vrrp, and the gateway load balancing pr otocol glpb on the cisco me 3400e ethernet access switch. Hsrp vrrpd glbp standard rfc2281 rfc3768 none load balancing no no yes osi layer3 layer3.
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. I used two asrs, so the config may vary slightly if you use an isr. Configure authentication for hsrp, use password vault. Vrrp and varp a virtual ip vip address is an ip address that does not directly connect to a.
Configuring hsrp thehotstandbyrouterprotocol hsrp isafirsthopredundancyprotocolfhrpdesignedtoallow fortransparentfailoverofthefirsthopipdevice. Rtra will be configured as the active hsrp router by setting a higher hsrp priority. One router will be the active router and is responsible for responding to packets that are sent to the virtual gateway address. Gns3 labs for ccna hsrp configuration and verification.
We will configure each router with unique physical ip but they must have the same group number and virtual ip. Configuring hsrp on nexus os network engineering stack exchange. In computer networking, the hot standby router protocol hsrp is a cisco proprietary redundancy protocol for establishing a faulttolerant default gateway. Hsrp works by simply configuring one or more routers to be part of hsrp group. If he puts the priority of both groups on the same router, he wouldnt accomplish load balancing because the other router would. The hot standby routing protocol hsrp is not supported with cisco nonstop. Hsrp allows building resiliency in the network gateways wherein should an active router fail in a hsrp group, the standby router assumes the. Draft hsrp comments and issue papers for new orleans discussion. This will allow r2 to take the active role and be the physical gateway of the hosts.
Introduction to cisco hot standby router protocol hsrp in a lan, if all packets destined to other network segments are forwarded by the same router, when the gateway fails, all the hosts that use the router as the default nexthop fail to communicate with external networks. Cisco developed the proprietary hot standby router protocol hsrp to allow multiple. For theory, i used cisco configuration guides and the cisco press official certification guide. Hsrp with two routers and two diverse internet circuits. Hot standby router protocol, hsrp, is a cisco proprietary protocol to make multiple routers or. 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. The priorities are to set router 1 as the primary for.
After configuration, give a few moment and use the show standby and show standby brief commands on r1 and r2 to verify that hsrp your configuration. Oct 21, 2010 in the world of first hop redundancy, we have plenty of choices. Configuring hsrp group attributes although hsrp can run with no other configuration required, you can configure attributes for the hsrp group, including authentication, priority, preemption and preemption delay, timers, or mac address. All the clients need access to servers on site b hsrp will provide the clients with uninterrupted access to servers of site b. The hot standby router protocol hsrp is a first hop redundancy protocol fhrp designed to allow for transparent failover of the firsthop ip device. Migrating from cisco hsrp to industry standard vrrp. The following chart provides a quick breakdown of each protocol. Hsrp provides high network availability by providing firsthop routing redundancy for ip hosts on networks configured with a default gateway ip address. Ccna labs hsrp configuration on gns3 and packet tracer. Cisco me 3400e ethernet access switch software configuration guide ol1648505. Hsrp configuration best cisco ccna ccnp and linuxcentos.
To accomplish this, r1 is selected as the primary router, and r2 is the secondary router. Customer controls service turn up pace, allows full control. Version 1 of the protocol was described in rfc 2281 in 1998. Well similarly we can have different hsrp groups for different vlans. Jun 21, 2010 configure authentication for hsrp, use password vault.
The configuration of gateway load balancing protocol glbp on cisco router is easy and very much similar to that of hot standby router protocol hsrp and virtual router redundancy protocol vrrp. Hsrp on the router addressing assigned to the bridge group. Hot standby router protocol hsrp is a cisco proprietary first hop redundancy protocol fhrp. If your gateway goes down it is a good idea to have a backup that takes over immediately. Hot standby router protocol hsrp developed by cisco is used to provide layer 3 gateway redundancy. Hot standby router protocol hsrp one picture summary.