Re: [mpls-linux-general] Linux-LDP configuration
Status: Beta
Brought to you by:
jleu
From: James R. L. <jl...@mi...> - 2001-04-30 17:53:04
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Hello, LDP tries to map your layer 3 topology (reachability) to LSPs. So if you can't ping a destination before enabling LDP, LDP can not create an LSP to that destination. In your network every LDP speaker needs to have EXACT routes to: -10.0.1.0/24 -10.0.2.0/24 -10.0.3.0/24 -10.0.4.0/24 Make sure to upgrade to the most recent mpls-linux (0.990) as well. Jim On Mon, Apr 30, 2001 at 01:20:16PM -0400, Yvan Pointurier wrote: > Hi, > > I would like to try the Linux LDP implementation but I can t make it work. > There has been some discussion on this list about it lately so I hope > somebody will be able to help me... > > Here is my topology: > > Note: I use networks 10.0.x/24 (x=1..4). > > 10.0.1.2 10.0.4.3 > | eth2 | eth2 > | | > | eth2 | eth2 > 10.0.1.3 LER A 10.0.2.2----10.0.2.3 LSR 10.0.3.2----10.0.3.3 LER B 10.0.4.2 > eth3 eth3 eth4 eth4 > > > LER A, LER B and LSR are (obviously) MPLS-enabled, but 10.0.1.2 and > 10.0.4.3 are just regular BSD, MPLS-unaware, workstations. > > I installed MPLS for Linux 0.700 (kernel 2.4.0-test11) and can monitor > MPLS encapsulation thanks to ethereal on one of the MPLS-enabled machines. > To do this, I set up the LSPs manually. > > Now, I would like LDP to set up the paths for me. I use the last version > of ldp-linux (grabbed with CVS), I do not use zebra but the linux-port > version compiled with -DMPLS_LINUX. > > On LER A: On LSR: On LER B: > add global 10.0.1.3 add global 10.0.2.3 add global 10.0.4.2 > add interface eth3 add interface eth3 add interface eth4 > add interface eth4 > > > Now I still have traffic between 10.0.1.2 and 10.0.4.3 but it does not use > any MPLS LSP, just static routing. > When I cat the /proc mpls files on any MPLS router, only mpls_in is not > empty. > > What can I do to get the expected result, ie get linux-LDP set an LSP > between LER A and LER B (and LER B to LER A) ? > > This is a very simple topology so I hope that someone already tried it. > > Any help deeply appreciated, > > Yvan Pointurier > ________________________________________________________________________ > yv...@vi... University of Virginia > http://www.cs.virginia.edu/~yp9x/ Department of Computer Science > > > > > _______________________________________________ > mpls-linux-general mailing list > mpl...@li... > http://lists.sourceforge.net/lists/listinfo/mpls-linux-general -- James R. Leu |