What is the difference between HSRP version 1 and 2?
Version 1 is the default version of HSRP. HSRP version 2 uses the new IP multicast address 224.0. This new multicast address allows CGMP leave processing to be enabled at the same time as HSRP. HSRP version 2 permits an expanded group number range, 0 to 4095, and consequently uses a new MAC address range 0000.0C9F.
What is the multicast and port number used for HSRP version 2?
224.0
Hot Standby Router Protocol (HSRP) has 2-versions : This version allows group number range from 0 to 255. version 2 : The messages are multicast at 224.0. 0.102 and uses the UDP port 1985. This version allows group number range from 0 to 4095.
What is the default priority of a router that has HSRP version 2 enabled?
The HSRP interface for Router A has an IP address of 10.0. 0.1 with a group 1 standby priority of 110 (the default is 100). The HSRP interface for Router B has an IP address of 10.0. 0.2 with a group 2 standby priority of 110.
How does Cisco HSRP work?
HSRP Overview When HSRP is configured on a network segment, it provides a virtual MAC address and an IP address that is shared among a group of routers running HSRP. The address of this HSRP group is referred to as the virtual IP address. One of these devices is selected by the protocol to be the active router.
Is HSRP open standard?
HSRP is a Cisco proprietary protocol. VRRP is an open standard protocol. HSRP version 1 uses UDP port number 1985 and multicast address 224.0. 0.2 and version 2 uses UDP port 1985 and 224.0.
What is HSRP VRRP and Glbp?
HSRP provides routing redundancy for routing IP traffic without being dependent on the availability of any single router. GLBP provides routing redundancy similar to HSRP and also provides load balancing over multiple routers by using a single virtual IP address and multiple virtual MAC addresses.
What is HSRP preempt?
the preempt is to allow the once active device to take over for the stanby once it comes back online.
What is the default HSRP priority?
100
The default priority value is 100. The router in the HSRP group with the highest priority value becomes the active router. HSRP-enabled router with preempt configured attempts to assume control as the primary router when its priority is higher than the current active router.
What layer is HSRP?
application layer protocol
HSRP is an application layer protocol. HSRP version 1 uses UDP port number 1985 and multicast address 224.0. 0.2 and version 2 uses UDP port 1985 and 224.0.
How long does it take for HSRP to failover?
10 seconds
And you may even be able to use this redundancy to take production routers down during the day because the HSRP failover time is less than 10 seconds.
What is difference between HSRP and VRRP?
The primary difference between HSRP versus VRRP would be that HSRP is proprietary to Cisco and can only be used on Cisco devices. VRRP is a standards based protocol and is vendor independent allow some flexibility when choosing network devices.
Which is better HSRP or GLBP?
The main difference is that GLBP allows the load balancing of traffic among the master and standby routers while in HSRP (and VRRP) the standby routers do not help handle traffic. With GLBP, the single virtual IP address is associated with one virtual MAC address per GLBP member.
Which is the only address available for HSRP?
These three addresses are the only addresses available for use with HSRP: Therefore, you can configure only three HSRP groups on Token Ring interfaces, unless you configure the standby use-bia parameter. HSRP peer routers that protect a subnet are able to provide access to all other subnets in the network.
Is the Cisco 7000 router compatible with HSRP?
A. DECnet and XNS are compatible with HSRP and multiple HSRP (MHSRP) over Ethernet, FDDI, and Token Ring on the Cisco 7000 and Cisco 7500 routers only. Refer to Using HSRP for Fault-Tolerant IP Routing for more information.
What is the HSRP group number in hexadecimal?
The ** is the HSRP group number in hexadecimal, based on the respective interface. For example, HSRP group 1 uses the HSRP virtual MAC address of 0000.0c07.ac01. Hosts on the adjoining LAN segment use the normal Address Resolution Protocol (ARP) process in order to resolve the associated MAC addresses.
What happens if an active router fails to run HSRP?
If the active router fails, the standby assumes the packet forwarding duties. Although an arbitrary number of routers may run HSRP, only the active router forwards the packets that are sent to the virtual router IP address.