|
Home > Archive > CCNP > January 2002 > OSPF broadcast
You are viewing an archived Text-only version of the thread.
To view this thread in it's original format and/or if you want to reply to
this thread please [click here]
|
|
|
| Guys, Im reading about OSPF at this point. I am seeing that on an Ethernet side, in a broadcast network, that OSPF can "broadcast" its info to other routers. I was thinking that routers would not do anything with broadcasts. I have two questions: 1. What layer does OSPF reside on the OSI model? 2. Are those broadcasts referring to the hello messages? Thanks in advance. | |
|
|
| huntert 2002-01-15, 6:13 pm |
| OSPF uses LSA link state advertisements and talks with the routers, so basically ospf will send small chunks of its info through the LSA to the router and this goes to all nets/routes not just neighboring routes like rip and igrp do.
SO the LSA are the broadcasts that ospf sends.
GoodLuck | |
| dmaftei 2002-01-15, 7:56 pm |
| quote:
Originally posted by Dude
1. What layer does OSPF reside on the OSI model?
OSPF, like all other routing protocols, is a network layer protocol.
quote:
2. Are those broadcasts referring to the hello messages?
Possibly, but that's bad terminology. OSPF never broadcasts; it sends either multicast, or unicast packets. | |
| strikeattack 2002-01-15, 8:38 pm |
| Yep. It probably does not help confusion either that the command IP OSPF NETWORK BROADCAST enables OSPF over NBMA topologies. |
|
|
|
|
Have a read of this document