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. Nevertheless, glbp is a very nice technology on paper but i would encourage you, regardless of what your skill level is, to use hsrp. Gateway load balancing protocol glbp chris tech net. Copy the running configuration to the startup configuration. The show standby command is issued for each device to verify the devices configuration. Configuration examples for gateway load balancing protocol additional references command reference glossary.
Simplify network designs and configurations through virtualization techniques. Gateway load balancing protocol glbp configuring glbp. For glbp cisco configuration, there are some steps. Prerequisites for gateway load balancing protocol before configuring the glbp feature, ensure that the routers can support multiple mac addresses on the physical interfaces. Gateway load balancing protocol glbp is a cisco proprietary protocol that attempts to overcome the limitations of existing redundant router protocols by adding basic load balancing functionality. In this section, the configuration is extended to show basic glbp authentication using key chains, altering the default load balancing behavior to weighting, and basic interface line protocol tracking. Tutorial glbp configuration on cisco switch step by step. Figure 402 mhsrp load sharing 121235 active router for group 1. In case you want to use the same configuration files for the routers, make sure that you adapt the path to the files in the topology file. Glbp operation best cisco ccna ccnp and linuxcentos pdf notes. The virtual ip address to be used by the glbp group is set to 10. With glbp, there is still one virtual ip address which is assigned by the administrator via the glbp ip command for example glbp 1 ip 10. Glbp provides load balancing over multiple router gateways using a single virtual ip address and multiple virtual mac addresses.
The following sample configuration sets up two routers r1 and r2 as glbp gateways serving the 10. This document shows the glbp configuration on the small campus network. Pdf performance evaluation of first hop redundancy protocols. Poe best cisco ccna ccnp and linuxcentos pdf notes. Aug 09, 2019 glbp tracks interface and adjusts its weighting i. So,you can only use gateway load balancing protocol on cisco devices. Glbp allow a mechanism of four routers in each forwarding group. Jul 02, 2020 client 1 has a default gateway of client 2 has the same default gateway you may verify glbp configuration and find out which role each router is playing using the show glbp command. On the example above, we verify glbp configuration from r1s point of view. Ccna routing and switching portable command guide network. The main disadvantage of hsrp and vrrp is that only one gateway is elected to be the active gateway and used to forward traffic whilst the rest are unused until the active one fails. Configures the router to take over as avg for a glbp group if it has a higher priority than the current avg. Like for instance, router 1 and router 2 were configured for glbp and a host that resides in vlan 10 initiate a traffic will forward the request to its default gateway which is the layer 3 switch, and the layer 3 switch will then forward to the forwarding router for example router 2.
I will use the following topology to configure glbp. Dec 10, 2012 the following sample configuration sets up two routers r1 and r2 as glbp, gateways serving the 172. Note for mhsrp, you need to enter the standby preempt interface configuration command on the hsrp interfaces so that if a router fails and then comes back up, preemption restores load sharing. Now, you need to perform the following configuration. Hsrp vrrp glbp free download as powerpoint presentation. Lets take a look at a configuration example so you can see how this works. Ip addressing services configuration guide, cisco ios xe. Glbp is the abbreviation for gateway load balancing protocol. Mar, 2019 for example, if there are two routers in a group and r1 has double the forwarding capacity of router b, the weighting value of router a should be configured to hlbp double the amount of r2.
For example, think about hsrp, with hsrp we had an active router, we had standby router, and the active router which actively forwarding. Glbp configuration best cisco ccna ccnp and linuxcentos. You must configure each gateway in a glbp group with the same group number, and at least one gateway in the read more. The first line shows information about the current avg in this case is r1 and its backup avg in this case is r2.
Here, we will learn the details of the protocol and we will also learn glbp configuration. Introduction to the cisco gateway load balance protocol glbp. Oct 04, 2019 glbp configuration example pdf october 4, 2019 admin glbp is a cisco proprietary protocol that attempts to overcome the limitations of existing this section will first go over the configuration process steps and commands that are used to perform a basic glbp configuration. Glbp group configuration with group id and virtaul ip 3. The next three lines shows information about avf, in this case all r1r2r3, and their virtual mac address. So what we showed you is a per group load balancing. Figure 52 shows the network topology for the configuration that follows, which shows how to configure glbp using commands covered in this chapter. Pdf view with adobe reader on a variety of devices. Contents at a glance introduction 1 selfassessment 21 chapter 1 networking fundamentals 29 chapter 2 network models 43 chapter 3 concepts in ip addressing 73 chapter 4 working with cisco equipment 7 chapter 5 securing your cisco devices 173 chapter 6 basic switch operations and configuration 193 chapter 7 basic routing 229 chapter 8 visualizing data flow between two. The output of show vrrp on r2 below shows tutoial it is a virtual router backup having priority r2 configif glbp 1 authentication keychain testchain. Glbp gateway load balancing protocol and its name suggests one of the big benefits, its bring to the table is the ability to do loadbalancing easier than we could do otherwise. Glbp configuration example pdf glbp is a cisco proprietary protocol that attempts to overcome the limitations of existing this section will first go over the configuration process steps. It gives the path redundancy for the ip by mac address and sharing protocol between the redundant gateway.
This chapter provides information on and commands for hot standby routing protocol, virtual router redundancy protocol, and gateway load. Nov 02, 2018 glbp gateway loadbalancing protocol is providing redundancy gateway and true load balancing. Virtual router redundancy protocol vrrp vrrp is an. Enterprise high availability design and architectures cisco live. Ip addressing services configuration guide, cisco ios xe gibraltar 16. Configure a loop prevention protocol stp for example on switcha. See the configuring mhsrp section on page 4010 for the example configuration steps. Enables glbp on an interface and identifies the primary ip address of the virtual gateway. Glbp is a virtual gateway protocol similar to hsrp and vrrp.
Use the show standby brief command on r1 and r3 to view an hsrp status summary. We will use the figure below as an example network topology. Tutorila members of the group provide backup for the avg if it goes down. The following example shows configuration and verification for an hsrp group for ipv6 that consists of device1 and device2. The basic configuration closely resembles the hot standby router protocol hsrp configuration. Cisco nexus 9000 series configuration manual pdf download. Gateway load balancing protocol glbp geeksforgeeks. Gateway load balancing protocol glbp is a cisco proprietary protocol that protects data traffic from a failed router or circuit like hot standby router protocol hsrp and virtual router redundancy protocol vrrp while allowing packet load sharing between a group of redundant routers, providing automatic router backup for ip hosts configured with a single default gateway on an ieee 802. An interface begins in an initial state when first configured with hsrp, or taken out of an. Glbp gateway load balancing protocol cisco systems. R2 configure terminal enter configuration commands, one per line. Gateway load balancing protocol on the other hand, allows you to load balance within one group.
Cisco gateway load balance protocol glbp configuration. However, unlike others, glbp has capability of using multiple physical gateways simultaneously. The anycast hsrp feature will show how to transition to a broader. Glbp on catalyst 6500 switches configuration example cisco. Create a new vlan interface vlan100 set a vlan interface ip address 192. If you have no idea what a virtual gateway is then read my introduction to gateway redundancy first. Software configuration guide, cisco ios xe denali 16. Avg for a gateway load balancing protocol glbp group continues to redirect clients to a secondary active virtual forwarder avf. Here is a sample output, similar to what we saw for hsrp. Glbp configuration video in hindi jagvinder thind shows how to configure glbp gateway load balancing protocol timers, preemption and priority in gns3 in hi. Each time you need to practice or test a particular network configuration, all you have to do is. Gateway load balancing protocol glbp is a cisco proprietary protocol and performs the similar function to hsrp and vrrp but it supports load balancing among members in a glbp group.
Hsrp vrrp glbp router computing networking standards. This paper will highlight the advantages of glbp which can. In case of hsrp or vrrp, only one physical gateway in a standbyredundancy group is responsible for packet forwarding, others remain inactive in standby. R1 configure terminal enter configuration commands, one per line. Ip redundancy and load balancing with gateway load. Glbp gateway load balancing protocol is an another first hop redundancy protocol. You will start the lab by configuring the glbp on the two routers r1. The following example activates glbp for group 10 on fast ethernet interface 00. Note that only the commands specific to glbp are shown in this example. First hop redundancy protocols configuration guide, cisco ios. Before configuring glbp, ensure that the devices can support multiple mac. What is the ip address and priority of the standby router. The actual virtual gateway avg provides virtual mac addresses to all the other routers operating glbp of the same group.
The glbp stands for gateway load balancing protocol. This document provides a sample configuration for gateway load balancing protocol glbp on the cisco 6500 catalyst switches. Lab configuring hsrp and glbp topology 20 cisco andor its affiliates. Many titles include programming code or configuration examples. May 19, 2014 at the beginning of this article is a link where you can download the gns3 topology along with the router configurations. From a command prompt on pca, issue a ping t command to the 209. Nov 18, 2008 as you can see, the glbp configuration is similar to the hsrp configuration.
Once you setup the basic configuration you can start its customization according to your needs. In vrrp, like with hsrp, a group of routers are configured in which the network engineer. This is the default gateway that would be configured on all the hosts in the 172. Here is an example of how to use it to build gns3 server on amazon aws. Glbp operation best cisco ccna ccnp and linuxcentos pdf. Its mission in life though is to dynamically distribute the load within a group. Pdf the first hop redundancy protocols includes three protocols hot standby router protocol. Understanding gateway load balancing protocol glbp gateway load balancing protocol glbp is a cisco proprietary solution for redundancy and load balancing in an ip network. You could only get any kind of load balancing if you add multiple groups.
Cisco glbp configuration with example icnd2 200105. Here, we will learn the details of the protocol and we will also learn glbp configuration in another lesson. Configuration and verification for an hsrp group the following example shows configuration and verification for an hsrp group for ipv6 that consists of device1 and device2. May 03, 2019 glbp configuration example pdf admin may 3, 2019 no comments glbp is a cisco proprietary protocol that attempts to overcome the limitations of existing this section will first go over the configuration process steps and commands that are used to perform a basic glbp configuration. Can you tell me the macaddress corresponding to 10. Scribd is the worlds largest social reading and publishing site.
To remove the tracking, use the no form of this command. Router r1 acting is active virtual gateway responded with different answers to the very same questions, both pc1 and pc2 said hey. By default, the active router directs the traffic from host to each successive router in the group using roundrobin algorithm. The figure below shows a basic glbp topology with r1 and r2 forming a glbp group. Vrrp configuration s2750, s5700, s6700 v200r003c00, c02. Glbp stands for gateway load balancing protocol and just like hsrp vrrp it is used to create a virtual gateway that you can use for hosts. How glbp works after the election ends, r4 is both the avg and avf. Router r1 is also the avf for the virtual mac address 0007. Once you setup the basic configuration you can start its.
In addition to being able to set priorities on different gateway routers, glbp allows a weighting parameter to be set. The router r1 is the avg for the glbp group and is responsible for the virtual ip address 192. In the following example, sample output is displayed about the status of the glbp group, named 10, on the device. Ensure that you meet these requirements before you attempt this configuration.
Cisco ccna ccnp and linux pdf notes, cisco 200125, cisco ccna 200120, ccnp switch 300115, ccnp route, linux rhel6,rhel7, centos. First hop redundancy protocols configuration guide, cisco. Glbp allow automatic selection and simultaneous recovery from first hop router failures. Glbp gateway load balancing protocol prerequisites for gateway load balancing protocol 2 cisco ios release 12.
This is the default load balancing mode in glbp and is suitable for any number of end hosts. Glbp gateway load balancing protocol gateway load balancing protocol glbp protects data traffic from a failed router or circuit, like hot standby router protocol hsrp and virtual router redundancy protocol vrrp, while allowing packet load sharing between a group of redundant routers. Glbp is a cisco proprietary protocol that attempts to overcome the limitations of existing this section will first go over the configuration process steps and commands that are used to perform a basic glbp configuration. To specify a tracking object where the gateway load balancing protocol glbp weighting changes based on the availability of the object being tracked, use the glbp weighting track command in interface configuration mode.
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