Note: If no priority is configured, it uses the default of 100. Furthermore, if there are more than two routers in the group, the second highest IP address determines the standby router and the other router/routers are in the listen state.
![hsrp cisco mac address 07ac hsrp cisco mac address 07ac](https://3.bp.blogspot.com/-oI0BgoPJW20/V-P-apEfGzI/AAAAAAAAC3U/GYmAs-mr2ssbHkY8qddeIf-0DTvmOkl2QCLcB/s1600/ccnaccnplinux.com_HSRP%2BConfiguration%2B9.jpg)
In the case of an equal priority, the router with the highest IP address for the respective group is elected as active. The priority field is used to elect the active router and the standby router for the specific group. If there is no priority configured for a standby group, what determines which router is active?Ī. By default, it decrements its priority by ten. You can configure by how much the router must decrement the priority. The standby router reads this value from the hello packet priority field, and becomes active if this value is lower than its own priority and the standby preempt is configured. When the state of a tracked interface changes to down, the active router decrements its priority.
#HSRP CISCO MAC ADDRESS 07AC SERIAL#
When an active router tracks serial 0 and the serial line goes down, how does the standby router know to become active?Ī. However, the Cisco 2600 and Cisco 3600 do support multiple MAC addresses on all Ethernet and Fast Ethernet interfaces.
#HSRP CISCO MAC ADDRESS 07AC SERIES#
Note: 4x00 series and earlier do not have the hardware required to support more than one MAC address at a time on Ethernet interfaces. This behavior can change in future releases of Cisco IOS ®. This is seen as the MAC address of the router, and it is filtered out if more than one router in a LAN becomes active.
![hsrp cisco mac address 07ac hsrp cisco mac address 07ac](https://images.slideplayer.com/36/10598442/slides/slide_13.jpg)
If the same group number is assigned to multiple standby groups, it creates a non-unique MAC address. However, Cisco does not recommend it on lower-end platforms such as the 4x00 series and earlier. Can I configure more than one standby group with the same group number?Ī. The HSRP hellotime timer defaults to three and the holdtime timer defaults to ten. The actual convergence time depends on the HSRP timers configured for the group and possibly on routing protocol convergence. By default, this is equivalent to three hello packets from the active router having been missed. Yes, the standby router takes over once the holdtime expires. Will the standby router take over if the active router LAN interface state is "interface up line protocol down"?Ī. This document addresses the most frequently asked questions related to Hot Standby Router Protocol (HSRP).