2. Consider this switched network (from CNA Scaling Networks 2.1.2.8). Please ig

Question

2. Consider this switched network (from CNA Scaling Networks 2.1.2.8). Please ignore the boxes drawn on top of each inter-switch link. Assume that Spanning Tree Protocol (STP) is running on this network. The table below shows the Bridge ID (BID) value for each switch, split into Priority and MAC Address parts. All ports are on VLAN 1 G1/1 S1 S2 Fa0/1 G1 G1/3 G1/1 Fa0/1 S3 S4 Priority 32769 24577 32769 32769 MAC Address S1 S2 S3 S4 000A00222222 000A00333333 000A00444444 (5 points) When STP protocol is run, which switch (S1, S2, S3 or S4) will become the Root Switch for this network? Why? a.

Explanation / Answer

A.

S2 will become the Root bridge.

Switch

BID

S1

32769000A00111111

S2

24577000A00222222

S3

32769000A00333333

S4

32769000A00444444

B.

Bandwidth

STP values

New STP Values

10 MBPS

100

2,000,000

100 MBPS

19

200,000

1 GBPS

4

20,000

10 GBPS

2

20,00

100 GBPS

N/A

2,00

1TBPS

N/A

20

10 TBPS

N/A

2

E. “ Spanning-tree vlan 1 root primary “ is used to change the switch as Root Switch. (w.r.t CISCO IOS)

F. 4(from S3 G1/1 to S2 G1/2) + 4(from S2 G1/2 to S4 G1/1) = 8 (Cost for S4)

Switch

BID

S1

32769000A00111111

S2

24577000A00222222

S3

32769000A00333333

S4

32769000A00444444

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.