On Wed, Oct 10, 2001 at 11:55:09PM +0200, martin f krafft wrote: > RIP, HELLO, OSPF, BGP, EGP, SPREAD > > all these are routing protocols. RIP, HELLO, and EGP are > distance/vector based, OSPF and SPREAD are link-state based, but what > exactly do these mean? do you have a comprehensive webpage?
We're way off topic here. Any decent networking with IP text will answer these questions. > am i right: > > RIP: routers communicate between each other to inform each other of > distance to other networks. so when a router A, connected to B > and C receives a metric to network X via B of 5 but then later > via A of 3, it will route via 3. More or less correct, yes. Note that the idea of "distance" has nothing to do with the speed or bandwidth of the link. > HELLO: is similar, right? Dunno, looking it up. Are you talking about the HELLO BPDUs which spanning tree uses? > EGP: also similar, but used between networks (out in the wild open > internet. EGP == Exterior Gateway Protocol ... refers to a family of protocols (those used to route between autonomous systems), and a specific member of that family which used to be the Internet's routing protocol but is now mostly dead. > OSPF: link-state through which each router keeps a directed graph of > connections, and which is then parsed with Dijkstra's algorithm > to identify shortest routes. Yup. Convergence times are much shorter than with RIP, but at a cost in cofiguration time and router resources (especially every time a new spanning tree is calculated). > SPREAD: what is this? NFC. > BGP: what is this? Border Gateway Protocol ... it is an EGP and is the current Internet routing protocol between ASes. BGP-4 is the current version. BGP is a path-vector protocol. > thanks a bunch! If you need more information www.rfc-editor.org has the RFCs for RIP, EGP, BGP, OSPF, and then of course there is the book "Interconnections" by Radia Perlman Regards, -- Nathan Norman - Staff Engineer | A good plan today is better Micromuse Ltd. | than a perfect plan tomorrow. mailto:[EMAIL PROTECTED] | -- Patton
pgpNnXomDkyx6.pgp
Description: PGP signature
