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.)
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A. B. C. D. E.CD.
In order to achieve the stated goals of reducing the impact of topology changes, reducing the time spent on network administration, and reducing manual configuration errors, the architect should include the following two solutions in the new design:
B. Implement MST instead of STP:
MST (Multiple Spanning Tree) is an extension of the IEEE 802.1s standard that allows multiple VLANs to be mapped to a single spanning tree instance. This reduces the number of spanning tree instances required in the network, which simplifies configuration and reduces the likelihood of configuration errors. MST also provides faster convergence than STP, reducing the impact of topology changes on the network. By implementing MST, the customer can reduce the time spent on network administration and manual configuration errors.
A. Implement Rapid PVST+ instead of STP:
Rapid PVST+ (Per-VLAN Spanning Tree Plus) is an evolution of Cisco's proprietary PVST+ protocol that provides rapid convergence in a VLAN-based environment. It uses the same basic concepts as STP but provides faster convergence and better load balancing. By implementing Rapid PVST+ instead of STP, the customer can reduce the impact of topology changes and reduce the time spent on network administration.
C. Use VTP to propagate VLAN information and to prune unused VLANs:
VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol that allows VLAN information to be propagated throughout the network. By using VTP, the customer can simplify VLAN management and reduce manual configuration errors. VTP also allows unused VLANs to be pruned from the network, which reduces the size of the spanning tree and improves network performance.
However, option C alone does not address the goals of reducing the impact of topology changes and reducing the time spent on network administration.
D. Configure broadcast and multicast storm control on all switches:
Broadcast and multicast storms can significantly impact network performance by consuming bandwidth and causing network congestion. By configuring broadcast and multicast storm control on all switches, the customer can prevent these storms from affecting network performance.
E. Configure dynamic trunking protocol to propagate VLAN information:
DTP (Dynamic Trunking Protocol) is a Cisco proprietary protocol that allows switches to automatically negotiate trunking configuration parameters. By using DTP, the customer can simplify VLAN management and reduce manual configuration errors. However, this option alone does not address the goals of reducing the impact of topology changes and reducing the time spent on network administration.
In summary, the two solutions that should be included in the new design are B. Implement MST instead of STP and A. Implement Rapid PVST+ instead of STP.