Which vrrp statement about the roles of the master

A VRRP group has one master and one or more backup virtual routers. A VRRP group has one master and one redundant virtual router. Unilike HSRP which has one active router, one standby router and many listening routers , a VRRP group has one master router and one or more backup routers.

All backup routers are in backup state. If you are a network technician, study the exhibit carefully. When Router RA recovers, it will regain the master virtual router role. When Router RB recovers, it will regain the master virtual router role. Router RA is the master virtual router because of its higher priority By default, the pre-empting function is enabled so Router RB will become the master virtual router when RA fails; and when RA recovers, it will take the master role again.

Which router redundancy protocol cannot be configured for interface tracking? VRRP cannot directly track an interface status but interfaces can be tracked through a tracked object. Find Flashcards. Brainscape's Knowledge Genome TM. Browse over 1 million classes created by top students, professors, publishers, and experts. Loading flashcards What is VRRP? Master and backup. The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools.

Registered Cisco. Release 3. VRRP Overview A LAN client can use a dynamic process or static configuration to determine which router should be the first hop to a particular remote destination. Figure 1. Multiple Virtual Router Support You can configure up to virtual routers on a router physical interface. The actual number of virtual routers that a router interface can support depends on the following factors: Router processing capability Router memory capability Router interface support of multiple MAC addresses In a topology where multiple virtual routers are configured on a router interface, the interface can act as a master for one or more virtual routers and as a backup for one or more virtual routers.

The sections that follow describe how to customize your VRRP configuration. Clearing VRRP Statistics Use the clear vrrp statistics command to clear all the software counters for the specified virtual router.

BFD supports all types of encapsulation. BFD is not tied to any particular routing protocol, supports almost all routing protocols. Use one of the following commands: end commit. Router A will become the master for this group with priority Advertising interval is 3 seconds. Preemption is enabled. Authentication is enabled. Virtual Router 5: Virtual IP address is Whichever router comes up first will become master as preemption is disabled. Advertising interval is 30 seconds.

Preemption is disabled. Authentication is disabled. Virtual Router Virtual IP address is Advertising interval is the default 1 second. Standards Standards Title No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature. Technical Assistance Description Link The Cisco Technical Support website contains thousands of pages of searchable technical content, including links to products, technologies, solutions, technical tips, and tools.

This feature was updated to support the minimum and reload delay options. VRRP supports Ethernet link bundles. The clear vrrp statistics command was introduced. Enables VRRP interface configuration mode on a specific interface. All routers within the group must be configured with the same authentication string. To disable VRRP authentication, use the no vrrp vrid command. Optional Sets the priority of the virtual router.

Use the vrrp preempt command to control which router becomes the master router. Only IP interfaces are tracked. Saves configuration changes. If no interface is specified, all virtual routers are displayed. If a backup device does not receive an advertisement for a set period, the backup device with the next highest priority takes over as primary and begins forwarding packets. To minimize network traffic, VRRP is designed in such a way that only the device that is acting as the primary sends out VRRP advertisements at any given point in time.

The backup devices do not send any advertisement until and unless they take over primary role. Typical deployments use only one backup router.

Do not confuse the VRRP primary and backup routing platforms with the primary and backup member switches of a Virtual Chassis configuration. The primary and backup members of a Virtual Chassis configuration compose a single host. In a VRRP topology, one host operates as the primary routing platform and another operates as the backup routing platform, as shown in Figure 3.

See also draft-ietf-vrrp-unified-mib This support is achieved through the backward compatibility options in RFC On EX and EX switches, the VRRP protocol must be configured with a Hello interval of 2 seconds or more with dead interval not less than 6 seconds to prevent flaps during CPU intensive operations events such as routing engine switchover, interface flaps, and exhaustive data collection from the packet forwarding engine.

If Routers B and C are configured with the priorities of and , respectively, Router B is elected to become master virtual router because it has the higher priority. If Routers B and C are both configured with the priority of , the backup virtual router with the higher IP address is elected to become the master virtual router. By default, a preemptive scheme is enabled whereby a higher-priority backup virtual router that becomes available takes over for the backup virtual router that was elected to become master virtual router.

You can disable this preemptive scheme using the no vrrp preempt command. If preemption is disabled, the backup virtual router that is elected to become master virtual router remains the master until the original master virtual router recovers and becomes master again.

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