300-420 · Question #111
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to…
The correct answer is A. Implement Rapid PVST+ instead of STP. C. Use VTP to propagate VLAN information and to prune unused VLANs. To improve Layer 2 topology convergence, automate VLAN management, and reduce manual errors, implementing Rapid PVST+ and using VTP are effective solutions.
Question
A customer's current Layer 2 infrastructure is running Spanning Tree 802.1d, and all configuration changes are manually implemented on each switch. An architect must redesign the Layer 2 domain to achieve these goals:
- reduce the impact of topology changes
- reduce the time spent on network administration
- reduce manual configuration errors
Which two solutions should the architect include in the new design? (Choose two.)
Options
- AImplement Rapid PVST+ instead of STP.
- BImplement MST instead of STP.
- CUse VTP to propagate VLAN information and to prune unused VLANs.
- DConfigure broadcast and multicast storm control on all switches.
- EConfigure dynamic trunking protocol to propagate VLAN information.
How the community answered
(38 responses)- A76% (29)
- B5% (2)
- D3% (1)
- E16% (6)
Why each option
To improve Layer 2 topology convergence, automate VLAN management, and reduce manual errors, implementing Rapid PVST+ and using VTP are effective solutions.
Implementing Rapid PVST+ (RSTP) significantly reduces the convergence time during Layer 2 topology changes compared to legacy 802.1d STP, directly addressing the goal of reducing impact.
While MST also offers faster convergence than 802.1d, Rapid PVST+ is a direct improvement for convergence, and MST's primary benefit is resource optimization for large VLAN numbers, not directly solving the administration or error reduction problem as well as VTP.
Using VTP (VLAN Trunking Protocol) automates the propagation of VLAN configuration across switches, reducing manual administration, eliminating tedious per-switch configuration, and minimizing the potential for human errors in VLAN setup.
Configuring broadcast and multicast storm control helps prevent network performance issues but does not directly address faster STP convergence or reduced administrative effort in VLAN management.
Dynamic Trunking Protocol (DTP) automates trunk negotiation but does not propagate VLAN configuration information or reduce manual errors in VLAN creation like VTP does.
Concept tested: Spanning Tree Protocol (RSTP), VLAN Trunking Protocol (VTP), Layer 2 automation
Source: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750/software/release/12-2_55_se/configuration/guide/scg/swvtp.html
Topics
Community Discussion
No community discussion yet for this question.