5 thoughts on “Briefly describe the composition of the virtual MAC address in HSRP?”
Tami
The MAC address was originally existed with Ethernet. Because it is compatible with IP, it is stored. The so -called MAC means the meaning of the media access control, which refers to the physical address of a device. It has the following functions: 1. In data transmission, as the address information of the next jump, as the unique logo of the device; 2. Layer analysis. MAC work on the second layer of data link layer, IP work on the third layer of network layer, and the OSI seven -layer protocol can correspond.
For example: 0000.0C07.AC01 is the virtual Mac of the HSRP group 1. 0000.0C. The 1-6-bit representative 0000.0C is CISCO 07.AC. -12 digits indicate the address of the specific group, which can be changed here, depending on which HSRP group enabled when configured
Virtual MAC address composition: vendor id: Manufacturer ID, the first 3 bytes of the MAC address HSRP code: It means that the address is HSRP virtual router. XX07.ACXX group ID: The last byte is the group ID, consisting of the group number . If we can pass the command: show ip arp command to view 0000.0007. AC01
The MAC address was originally existed with Ethernet. Because it is compatible with IP, it is stored.
The so -called MAC means the meaning of the media access control, which refers to the physical address of a device.
It has the following functions:
1. In data transmission, as the address information of the next jump, as the unique logo of the device;
2. Layer analysis. MAC work on the second layer of data link layer, IP work on the third layer of network layer, and the OSI seven -layer protocol can correspond.
For example: 0000.0C07.AC01 is the virtual Mac of the HSRP group 1. 0000.0C. The 1-6-bit representative 0000.0C is CISCO 07.AC. -12 digits indicate the address of the specific group, which can be changed here, depending on which HSRP group enabled when configured
Virtual MAC address composition:
vendor
id: Manufacturer ID, the first 3 bytes of the MAC address
HSRP code: It means that the address is HSRP virtual router. XX07.ACXX
group ID: The last byte is the group ID, consisting of the group number
. If we can pass the command: show
ip
arp command to view
0000.0007. AC01
Virtual Mac: 0000.0C07.AC01
0000.0C manufacturer number
07ac HSRP number
group number
supports up to 256 groups
The last two are the other group number and the other is basically fixed