How to change the bridge priority without change the VLAN ID? If you want to change the switch’s bridge priority you can only change the total bridge priority (bridge priority + extended system ID) in units of 4096. The STP bridge priority can only be changed in units of 4096. The valid values you can configure are: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28762, 32768, 36864, 40960, 45056, 49152, 53248, 57344 or 61440. The extended system ID will then be added to this number to make the total bridge priority value. Why 32768 default bridge priority? It’s because this field is 16 bits in length, and the most significant bit is set 1 by default. Therefore, the default bridge priority was 32768 With the addition of the extended-system ID, adding the VLAN ID number to the bridge priority, that changed. So, the default VLAN ID is 1, therefore the bridge priority in total isn’t 32768, its 32769. In the default VLAN of 1, the default bridge priority is 32769, which is 32768+1. What is the...
Basic Network Fundamental ( Change bridge priority without change VLAN ID, Root Bridge, Root port election, Root cost measurement)
How to change the bridge priority without change the VLAN ID? If you want to change the switch’s bridge priority you can only change the total bridge priority (bridge priority + extended system ID) in units of 4096. The STP bridge priority can only be changed in units of 4096. The valid values you can configure are: 0, 4096, 8192, 12288, 16384, 20480, 24576, 28762, 32768, 36864, 40960, 45056, 49152, 53248, 57344 or 61440. The extended system ID will then be added to this number to make the total bridge priority value. Why 32768 default bridge priority? It’s because this field is 16 bits in length, and the most significant bit is set 1 by default. Therefore, the default bridge priority was 32768 With the addition of the extended-system ID, adding the VLAN ID number to the bridge priority, that changed. So, the default VLAN ID is 1, therefore the bridge priority in total isn’t 32768, its 32769. In the default VLAN of 1, the default bridge priority is 32769, which is 32768+1. What is the...