In mail.net.groupstudy.pro, you wrote: > I have been using EIGRP for our routing protocol for the last couple years, > which is prettly great. The controversal of selecting the routing protocol > came up again recently. I would like to have your opinion on EIGRP vs. > OSPF, which one is refered? What's the weakness and advantage? Thanks!
- OSPF is pretty much supported by all vendors nowadays. - OSPF calculates a tree from the point of origin using Dijkstra's algorithm (SPF) - OSPF is a link-state protocol, you get really fast convergence by tuning the timers - All area 0 (ie. backbone) routers have a complete overview of the network - Easy to deploy - By default link-cost is calculated from the bandwidth of the link - Only for IP - Filtering on ABR/ASBR only, between areas preferably - EIGRP, although the spec is available, only you usually find it on only brand Ci$co routers. - EIGRP calculates it's view of the world using DUAL (Diffusing update algorithm) - Router stores its neighbors routing tables and queries its neighbors if no specific route is found - It's pretty much a distance-vector protocol with some features borrowed from link-state ones. - Pretty easy to deploy - Is bugwards compatible with IGRP - Works with IP and IPX - Easy to filter and aggregate, on any interface (ie you can do "areas" quite easily) - Takes into account path reliability, loading, MTU, lowest bandwidth between destinations, total delay when calculating the best way of getting to the destination. - Enterprise people tend to prefer EIGRP over others because it's easy to do ISDN backup with it Most people would nowadays choose OSPF because their CIOs might want to keep a second vendor option on the table. Service providers would probably choose IS-IS (my favorite) or OSPF. // kaj Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=62430&t=62419 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
