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How do I find my STP bridge ID?
The Bridge Priority (Switch Priority) value is used to find the Bridge ID (Swtich ID). The Bridge ID (Swtich ID) is made from two values. The Switch Priority, which is a numerical value defined by IEEE 802.1D, which is equal to 32,768 by default. The MAC Address of the Switch.
What is bridge ID in switch?
Each switch has a unique bridge identifier (bridge ID), that determines the selection of the root switch. The bridge ID is an 8-byte field that is composed of two sub fields: The value for the priority ranges from 0 to 61440 in steps of 4096. The default value for the priority is 32768.
How does a switch calculate the bridge ID?
Every switch has an identity when they are part of a network. This identity is called the Bridge ID or BID. It is an 8 byte field which is divided into two parts. The first part is a 2-byte Bridge Priority field (which can be configured) while the second part is the 6-byte MAC address of the switch.
What is the default bridge ID?
32768
Bridge ID = priority (4 bits) + locally assigned system ID extension (12 bits) + ID [MAC address] (48 bits); the default bridge priority is 32768, and. Port ID = priority (4 bits) + ID (Interface number) (12 bits); the default port priority is 128.
Which is the main MAC address in STP?
STP and other processes will use the Main MAC address, aka Burn-in-ID, aka Base MAC. this MAC is the main MAC for a switch. it is printed on sticker on the back of switch. its role is just simply to identify the switch.
What is the source of MAC address in bridge ID details?
The Switches have MAC addresses for each port, and also a base MAC address. The base MAC address is used as part of the bridge ID in STP. You can check the Switch’s base mac-address with the “show version” command: Best regards! Expand Post LikeLikedUnlikeReply Martin L Edited by Admin February 16, 2020 at 4:58 AM
What is the bridge priority of a Cisco switch?
By default, all Cisco Switches has a Bridge Priority (Switch Priority) value of 32,768. Bridge Priority (Switch Priority) value decides which Switch can become Root Bridge (Root Switch). A Switch with lowest Bridge Priority (Switch Priority) Value will become the Root Bridge (Root Switch)
Which is the lowest bridge priority in swtich?
A Switch with lowest Bridge Priority (Switch Priority) Value will become the Root Bridge (Root Switch) The Bridge Priority (Switch Priority) value is used to find the Bridge ID (Swtich ID). The Bridge ID (Swtich ID) is made from two values.