Referring to the exhibit, which statement is correct?

The correct answer is B. The root bridge is using a bridge priority of 4k. The "Root ID" shows 4096.00:19:e2:55:36:1e. The first part of this ID, 4096, is the bridge priority of the root bridge. The local bridge ID is shown as 32768.00:19:e2:55:1d:30, indicating that the local device has a default bridge priority of 32768, which is higher (and thus…

Spanning-Tree Protocols

Question

Exhibit

Options

AThe local device is using a bridge priority of 4k.
BThe root bridge is using a bridge priority of 4k.
CThe root bridge has not been elected for this RSTP topology.
DThe local device is the root bridge for this RSTP topology.

How the community answered

(47 responses)

A
4% (2)
B
77% (36)
C
6% (3)
D
13% (6)

Explanation

The "Root ID" shows 4096.00:19:e2:55:36:1e. The first part of this ID, 4096, is the bridge priority of the root bridge. The local bridge ID is shown as 32768.00:19:e2:55:1d:30, indicating that the local device has a default bridge priority of 32768, which is higher (and thus less preferred) than 4096. Thus, the root bridge has a priority of 4096, and the local device is not the root bridge. The local device is participating in the RSTP topology and has identified another bridge as the root.

Topics

#RSTP#bridge priority#root bridge election#STP topology

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