OSPF summary & Differences between OSPF and EIGRP
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OSPF is described as a link state routing protocol that uses areas and multicast addresses to share routing updates fast. It supports VLSM, calculates paths using the SPF algorithm, and allows equal-cost load balancing. In contrast, EIGRP is an advanced distance vector protocol that uses a composite metric and supports both equal and unequal load balancing. Key differences between the two protocols include their administrative distances, proprietary nature, multicast addresses, and where manual summarization can occur.
OSPF summary & Differences between OSPF and EIGRP
- 1. OSPF summary & Differences between OSPF and EIGRP www.netprotocolxpert.in
- 2. OSPF summary • Here is a list of the most important OSPF features: • Link state routing protocol • Classless routing protocol • Supports VLSM (Variable Length Subnet Mask) • Converges fast • Uses the concept of areas • Uses multicast address for routing updates (224.0.0.5 and 224.0.0.6)
- 3. • Sends partial routing updates • Supports only equal cost load balancing • Manual summarization can be done only on ABRs and ASBRs • Uses interface cost as a metric • Uses SPF algorithm to calculate the best paths • Open standard • Each router inside an area has the same topology table • Supports clear-text and MD5 authentication
- 4. Protocol EIGRP OSPF Type of Routing Advanced Distance Vector Link State Metric Composite of Bandwidth & Delay Cost Manual Summarization On all Router Only on ABRs & ASBRs Load Balancing Equal & Unequal Load Balancing Equal cost Load Balancing Administrative Distance 90 110 Cisco Proprietary Yes No Multicast Address 224.0.0.10 224.0.05 244.0.06 Differences between OSPF and EIGRP