STOP IP Wastage! Learn VLSM in the Easiest Way | CCNA Subnetting Guide
Posts
Comparing internal routing protocols (IGPs)
The following table lists the differences between the three most popular interior routing protocols: Feature RIP EIGRP OSPF Type distance vector hybrid distance vector Metric hop count bandwidth and delay cost Speed of convergence slow fast fast Routing classful (RIPv1), classless(RIPv2) classless classless Updates periodical broadcast (RIPv1), multicast(RIPv2) multicast multicast Manual summarization no (RIPv1), yes (RIPv2) yes yes Supported on non-Cisco routers yes no yes Configuration complexity easy medium hard
Differences between OSPF and EIGRP
The following table lists the differences between OSPF and EIGRP:
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) 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