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#HSRP CISCO MAC ADDRESS 07AC UPDATE#
#HSRP CISCO MAC ADDRESS 07AC PC#

Furthermore, R1 has not only the MAC address of Fa0/0, but also the MAC address of the virtual router. Then, besides the real IP address 192.168.1.1, R1 also has the IP address of the virtual router. In the previous network configuration, R1 is the active router. In simple terms, the active router has the IP address/MAC address of the virtual router in addition to the real IP address/MAC address.

Use virtual MAC address as source MAC address for HSRP Hello packets.

Receives a packet with destination MAC address of virtual MAC address.

Returns an ARP reply to an ARP request for a virtual IP address, which includes the virtual MAC address.

#HSRP CISCO MAC ADDRESS 07AC UPDATE#

Send GARP when becoming an active router to update the ARP cache and MAC address table.

MAC address : 0000.0c (for CISCO) 07.ac (for HSRP) 01 (group number).

Specifically, it performs the following actions. Enterprise network core technology-gateway redundancy protocol (HSRP, VRRP, GLBP). The active router is responsible for routing packets destined to the virtual router. This multicast address represents all the routers in the same network. Also, the destination IP address of HSRP messages is a multicast address of 224.0.0.2. HSRP is located at the application layer of the hierarchy and uses UDP as the transport layer HSRP messages are encapsulated in UDP port 1985. When HSRP is enabled, HSRP messages are exchanged.

#HSRP CISCO MAC ADDRESS 07AC PC#

If you configure the IP address of the virtual router as the default gateway for your PC or server, even if the existing active router goes down, the new active router will route the packets so that you can continue to communicate with other networks. If the active router goes down, the standby router becomes the active router and routes packets to the virtual router. An active router is a router that routes packets destined to the virtual router. The grouped real routers assign the roles of active router and standby router. Hot Standby Router Protocol (HSRP) is a Cisco proprietary protocol that allows several routers or. MAC address of the virtual router : 00-00-0c-07-ac-XX (XX:HSRP group number) HSRP v1 uses the virtual MAC address of 0000.0c07. IP address of the virtual router: Specify by configuration Only the interface that is acting as the default gateway is grouped as a virtual router. As mentioned in other articles, a “virtual router” does not mean that the entire router is grouped together.