Implementing Cisco IP Routing (CCNP ROUTE, legacy) — Question 152

Based on the need to limit processing and bandwidth utilization due to dynamic routing protocol operation, the following routing requirements have been specified for your network.
- Partial and incremental routing updates
- Only the devices affected by a topology change perform route recomputation
- Route recomputation only occurs for routes that were affected
Which dynamic routing protocol should be deployed in your network to best meet these requirements?

Answer options

• A. BGP
• B. OSPF
• C. IS-IS
• D. EIGRP

Correct answer:

Explanation

EIGRP is the best choice because it supports partial and incremental updates, which helps minimize bandwidth usage. It also ensures that only the routers affected by a topology change will recompute routes, making it efficient. In contrast, BGP and OSPF do not provide the same level of efficiency in handling route updates as EIGRP does, and IS-IS, while similar, is not as widely implemented in scenarios requiring these specific requirements.