longest match vs. other metrics [7:41692]

2002-04-16 Thread Sean Wolfe
Quick question, hope it's not too trivial: When a router decides to forward a packet based on the longest match principle, does this supersede other factors? For example, if there is a route to network A via EIGRP, but a more specific route available via OSPF, does it choose OSPF because of long

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Steven A. Ridder
If the routes were equal (length), it would only have the eigrp route to chose from, because that's the only route that would be in the table because of the lower AD. The router would still have the route learned from OSPF in it's osopf database, but it wouldn't enter it into the RIB unless it lo

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread samuel
i think it choose longest match, what happend if this case between static route entry and eigrp route entry? yes ,it choose longest. but you know static route administrative distance is 1. ""Sean Wolfe"" P4HkO{O"PBNE :[EMAIL PROTECTED] > Quick question, hope it's not too trivial: > > When a rout

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread John Neiberger
There are two separate processes involved here and it's important to make a distinction between them. There is the process by which the router builds the routing table and then there is the route selection process. When building the routing table, the router looks at the various routes avail

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Larry Letterman
I believe its distance to determine the protocol, then the longest match after that... Larry Letterman Cisco Systems [EMAIL PROTECTED] - Original Message - From: "Sean Wolfe" To: Sent: Tuesday, April 16, 2002 7:08 PM Subject: longest match vs. other metrics [7:41692] > Q

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Jeff Smith
some Red Sox tickets? >From: "Sean Wolfe" >Reply-To: "Sean Wolfe" >To: [EMAIL PROTECTED] >Subject: longest match vs. other metrics [7:41692] >Date: Tue, 16 Apr 2002 22:08:54 -0400 > >Quick question, hope it's not too trivial: > >When a router de

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Chuck
excellent explanation, John. to plug a source of study materials, Howard Berkowitz has an excellent paper on how routers work, including the route determination process on certification zone ( www.certificationzone.com ) per RFC 1812, all routers forward based on the longest match. Chuck ""J

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Chuck
tch- > only when they are the same will the decison come down to administratice > distance between protocols. > > P.S. > Due to your connections can I get some Red Sox tickets? > > > >From: "Sean Wolfe" > >Reply-To: "Sean Wolfe" > >To: [EMAI

RE: longest match vs. other metrics [7:41692]

2002-04-16 Thread Lupi, Guy
connected, Serial0 r6# -Original Message- From: Sean Wolfe To: [EMAIL PROTECTED] Sent: 4/16/2002 10:08 PM Subject: longest match vs. other metrics [7:41692] Quick question, hope it's not too trivial: When a router decides to forward a packet based on the longest match principle,

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Larry Letterman
Looks like I should read it, since I was mistaken..:) Larry Letterman Cisco Systems [EMAIL PROTECTED] - Original Message - From: "Chuck" To: Sent: Tuesday, April 16, 2002 8:00 PM Subject: Re: longest match vs. other metrics [7:41692] > excellent explanation, John.

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Howard C. Berkowitz
Systems >[EMAIL PROTECTED] >- Original Message - >From: "Sean Wolfe" >To: >Sent: Tuesday, April 16, 2002 7:08 PM >Subject: longest match vs. other metrics [7:41692] > > >> Quick question, hope it's not too trivial: >> >> When a rou

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Jeff Smith
istance between protocols. > > > > P.S. > > Due to your connections can I get some Red Sox tickets? > > > > > > >From: "Sean Wolfe" > > >Reply-To: "Sean Wolfe" > > >To: [EMAIL PROTECTED] > > >Subject: longest

Re: longest match vs. other metrics [7:41692]

2002-04-16 Thread Michael L. Williams
I would agree with you that it wouldn't load balance over paths with differing ADs. However, theoretically, you could have a dynamic route learned via a routing protocol (having a given AD) and you could add a static route with the same length (i.e. /24) and purposely set the AD to match the one

Was Re: longest match vs. other metrics [7:41692]

2002-04-18 Thread bergenpeak
Related question to the above thread. As discussed, each routing protocol will maintain its list of prefixes that it knows about. A route selection process runs that considers the routes from each routing process and puts the "best" into the routing table. (best being defined by the route sel

RE: Was Re: longest match vs. other metrics [7:41692]

2002-04-18 Thread McCallum, Robert
show ip route ospf show ip bgp show ip route ? -Original Message- From: bergenpeak [mailto:[EMAIL PROTECTED]] Sent: 18 April 2002 13:37 To: [EMAIL PROTECTED] Subject: Was Re: longest match vs. other metrics [7:41692] Related question to the above thread. As discussed, each routing

Re: Was Re: longest match vs. other metrics [7:41692]

2002-04-18 Thread Howard C. Berkowitz
>Related question to the above thread. > >As discussed, each routing protocol will maintain its list of prefixes >that it knows about. A route selection process runs that considers the >routes from each routing process and puts the "best" into the routing >table. (best being defined by the rout