Examples of using Root bridge in English and their translations into Chinese
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Root Bridge- a.
Each switch thinks it is the root bridge.
All ports of Root Bridge are Designated Port.
Initially, every switch considers itself the root bridge.
Any switch can be the root bridge in a network.
It is said to be a very ancient living root bridge.
All the ports on the root bridge are designated ports.
The administrator cannot enforce the position of the root bridge.
But a more optimal forwarding topology places the root bridge at a specific predetermined location.
The switch which has thelowest bridge ID will be the root bridge.
After the root bridge has been determined, the STA calculates the shortest path to the root bridge.
For each instance of STP, there is a single root bridge.
The root bridge sends all its BPDUs with a message age value of 0, and all subsequent switches add 1 to this value.
Initially, every switch considers itself the root bridge. .
Note: The administrator can set the root bridge priority to 0 in an effort to secure the root bridge position.
However, because there is only one instance, there is only one root bridge and one tree.
Normally, root bridge ports are all designated ports, unless two or more ports of the root bridge are connected together.
When switches have the same priority,the one with the lowest MAC address is the root bridge.
The port roles describe their relation in the network to the root bridge and whether they are allowed to forward traffic:.
The is a customizable value that youcan use to influence which switch becomes the root bridge.
The example in this section demonstrates how a rogue root bridge can cause problems on the network and how root guard can help.
In Figure 1, Switches A and B comprise the core of the network,and A is the root bridge for a VLAN.
The message agecontains the length of time that has passed since the root bridge initially originated the BPDU.
In cases where all priorities are equal,the bridge with the lowest MAC address gets to be the Root Bridge.
Effectively, this value contains the information on how far you are from the root bridge when you receive a BPDU.
If the priority value is same, then the bridge with lowest value of6-byte MAC address will become the root bridge.
Cherrapunjee(also Sohra) is the wettest place on earth andis close to the most famous living root bridge, the"double-decker" living root bridge. .
With the standard STP, any bridge in the network with alower bridge ID takes the role of the root bridge.
Once the Western world was alerted as to their existence,the local people have had to work to preserve the traditional root bridges.
If all switches in a single spanning tree have the same bridge priority,the switch with the lowest MAC address will become the root bridge.