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Flashcards in Spanning-Tree Deck (18)
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1

What mode is defined in the IEEE 802.1s standard, that is used to enable multiple spanning trees for groups of one or more virtual local area networks(VLANs)?

spanning-tree mode mst

2

Which mode uses STP, not RSTP, which is defined in the IEEE 802.1D standard that creates a separate spanning tree instance for each VLAN and can be used with 802.1Q encapsulation?

spanning-tree mode pvst

3

What does MST stand for?

Multiple Spanning Tree

4

What does PSVT stand for?

Per-VLAN Spanning Tree Plus

5

Which mode uses RSTP which is defined in the IEEE 802.1w standard and combines the rapid transition of ports by RSTP with the creation of spanning trees for each VLAN by PVST+?

spanning-tree mode rapid-pvst

6

How does RSTP increase convergence speed?

by reducing the number of port states from five in STP to three.

7

What are the three port states for RSTP?

Discarding, learning, and forwarding

8

What are the three port states for RSTP?

Discarding
Learning
Forwarding

9

What is the default age out for RSTP?

6 seconds

10

What are the five port states for STP?

Disabled
Blocking
Listening
Learning
Forwarding

11

What is the "Root Port"?

It is the port in STP that is used to reach the root bridge.

12

What is the the "Designated Port"?

It is a forwarding port.

13

How many "Designated Ports" can there be?

There can only be "One" designated port per link.

14

What kind of ports are on the "Root Bridge" in STP?

All of the ports on a Root Bridge are considered "Designated Ports".

15

Spanning Tree Protocol's "Cost": What is the cost of a 10Mbps Link Bandwidth?

The cost is 100

16

Spanning Tree Protocol's "Cost": What is the cost of a 100Mbps Link Bandwidth?

The cost is 19

17

Spanning Tree Protocol's "Cost": What is the cost of a 1Gbps Link Bandwidth?

The cost is 4

18

Spanning Tree Protocol's "Cost": What is the cost of a 10Gbps Link Bandwidth?

The cost is 2