Re: [mpls-linux-general] ldp-portable updates
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Re: [mpls-linux-general] ldp-portable updates
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From: James R. L. <jl...@mi...> - 2001-06-26 15:44:48
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On Tue, Jun 26, 2001 at 03:24:39PM -0000, Venisa Cabrilla wrote: > That's it ! It works now :-D Thanks Jim ... Ahhhh. Another satisfied ldp-portable user ;-) For my next trick we'll get it working with ldp_zebra ... This weill require a bit more code from me .... Jim > > regards, > ~Venisa Cabrilla > > > >From: "James R. Leu" <jl...@mi...> > >Reply-To: jl...@mi... > >To: Venisa Cabrilla <vca...@ho...> > >CC: mpl...@li... > >Subject: Re: [mpls-linux-general] ldp-portable updates > >Date: Tue, 26 Jun 2001 09:57:31 -0500 > > > >On Tue, Jun 26, 2001 at 02:28:11PM -0000, Venisa Cabrilla wrote: > > > Hi, > > > > > > Sorry for the late response, I have to go downstair and upstair just to > >copy > > > the contents of /proc/net/mpls_*, (my lab and my office are not in the > >same > > > room) but I have done as fast as I can ... :-) > > > >Late response! I'm used to latency on the order of days (or weeks ;-) > >Your latency is spetacular! :-) > > > > > First, I have to inform you that since I use my computers as routers, I > >do > > > certainly have at least three ethernet cards in my routers (that is, the > > > topology that I gave you is far from complete, which will explain the > > > important contents of file mpls_in) but I used only the commands that I > >have > > > described in my last email. > > > >This is cool! ldp-portable is actually working for someone beside me! > > > > > In router1: > > > mpls_in: > > > 40004000 gen 16 0 POP DLV > > > 40004400 gen 17 0 POP DLV > > > 40004800 gen 18 0 POP DLV > > > 40004c00 gen 19 0 POP DLV > > > 40005000 gen 20 0 POP DLV > > > 40005400 gen 21 0 POP DLV > > > 40005800 gen 22 0 POP DLV > > > mpls_out: > > > 40004003 PUSH(gen 16) SET (eth1) > > > mpls_fec: > > > 40004003 10.0.0.6/32 > > > >Ahhhh. Here is the culprite. > > > > > mpls_labelspace: > > > lo 0 > > > >ldp_linux doesn't set the label space for you. You currently need to > >execute > >the command 'mplsadm -L eth1:0' for each of the LDP speaking interfaces > >before > >starting up ldp_linux. > > > >I have a patch from someone at Ericsson that fixes this. > > > >Other then the labelspace problem the rest look just fine :-) > > > >Let me know if this fixes it. > > > >BTW clues to this being the problem would have shown up in the MPLS kernel > >debugging when you tried to ping. > > > >On Router1: > >mplsadm -d > >ping 10.0.0.6 > >dmesg > > > >You should see that the packet are being sent via mpls_output() > > > >On Router2: > >ping 10.0.0.5 > > > >On Router1: > >dmesg > > > >You should see info about packets arriving on interfaces without a > >labelspace > > > >Jim > > > > > In router2: > > > mpls_in: > > > 40004000 gen 16 0 POP DLV > > > 40004400 gen 17 0 POP DLV > > > 40004800 gen 18 0 POP DLV > > > 40004c00 gen 19 0 POP DLV > > > 40005000 gen 20 0 POP DLV > > > 40005400 gen 21 0 POP DLV > > > 40005800 gen 22 0 POP DLV > > > mpls_out: > > > 40004004 PUSH(gen 16) SET (eth2) > > > mpls_fec: > > > 40004004 10.0.0.5/32 > > > mpls_labelspace: > > > lo 0 > > > > > > There is nothing in mpls_tunnel, which is normal. > > > > > > > > > regards, > > > ~Venisa Cabrilla > > > > > > > > > > > > >From: "James R. Leu" <jl...@mi...> > > > >Reply-To: jl...@mi... > > > >To: Venisa Cabrilla <vca...@ho...> > > > >CC: mpl...@li... > > > >Subject: Re: [mpls-linux-general] ldp-portable updates > > > >Date: Tue, 26 Jun 2001 08:45:55 -0500 > > > > > > > >On Tue, Jun 26, 2001 at 01:31:11PM -0000, Venisa Cabrilla wrote: > > > > > Hi James, > > > > > > > > > > Thanks for your ldp-portable updates, now I can see that mpls_in, > > > >mpls_out, > > > > > and mpls_fec are not empty. > > > > > > > >Hello, > > > > > > > >I think I know the problem. It has to do with the fact that LDP is > >setting > > > >up > > > >LSPs for too many entries in the route table. Send me the contents of > > > >/proc/net/mpls_* and we can verify this. > > > > > > > >My default policy of "send labels for everything" may not be valid in > >all > > > >cases. This will be simple enough to change I just need to figure out > >what > > > >the > > > >best default policy should be :-( > > > > > > > >I'll try to duplicate this setup here and see if I can figure it out as > > > >well. > > > > > > > >Jim > > > > > > > > > > > > > > I use the simple configuration in file README.sample : > > > > > > > > > > lo 10.0.0.6 lo 10.0.0.5 > > > > > --------- --------- > > > > > | Router2 |----------------| Router1 | > > > > > --------- --------- > > > > > |eth2 192.168.12.0/24 |eth1 > > > > > --------------------------------------- > > > > > > > > > > In router1: > > > > > bash# ifconfig lo 10.0.0.5 netmask 255.255.255.255 > > > > > bash# route add 10.0.0.6 gw 192.168.12.2 > > > > > > > > > > >From inside ldp_linux: > > > > > prompt> add global 10.0.0.5 > > > > > prompt> add interface eth1 > > > > > > > > > > In router2: > > > > > bash# ifconfig lo 10.0.0.6 netmask 255.255.255.255 > > > > > bash# route add 10.0.0.5 gw 192.168.12.1 > > > > > > > > > > >From inside ldp_linux: > > > > > prompt> add global 10.0.0.6 > > > > > prompt> add interface eth2 > > > > > > > > > > After that I can see that mpls_in, mpls_out, and mpls_fec in each > >router > > > >are > > > > > not empty. > > > > > > > > > > Unfortunately, I cannot ping anymore router1 from router2 and > >router2 > > > >from > > > > > router1. Before I enter ldp_linux, I can ping 10.0.0.5 from router1 > >and > > > >ping > > > > > 10.0.0.6 from router2. However, I can see the MPLS encapsulation > >using > > > > > ethereal for ping request messages but there is no ping reply > >message. > > > > > > > > > > Would you mind verify my configuration above and tell me what might > >be > > > >my > > > > > mistakes ? > > > > > > > > > > > > > > > PS: I have to explicitly add the routes using route commands this > >time, > > > > > because if I use zebra, I cannot use ethereal (ethereal hangs). > > > > > I still do not know the reason, it might be due to TCP/UDP > >conflicts. > > > > > > > > > > > > > > > regards, > > > > > ~Venisa Cabrilla > > > > > > > > > > > > > > > > > > > > >From: "James R. Leu" <jl...@mi...> > > > > > >Reply-To: jl...@mi... > > > > > >To: mpl...@li... > > > > > >Subject: [mpls-linux-general] ldp-portable updates > > > > > >Date: Sun, 24 Jun 2001 20:23:13 -0500 > > > > > > > > > > > >Sorry to those who have been trying to use ldp-portable from CVS. > > > > > >I finnally have gotten around to fixing and testing ldp-portable. > > > > > >It's almost back to where it was before I started mucking around > >with > > > >PDU > > > > > >processing. (interoping with cisco pointed out the need to handle > > > >multiple > > > > > >PDUs per TCP segment and handle one PDU spread across multiple TCP > > > > > >segments) > > > > > > > > > > > >If you tried ldp-portable in the last 3 weeks and it was broken, > >try > > > > > >updating your CVS client and giving it another go. > > > > > > > > > > > >Sorry for the long delay. > > > > > >Jim > > > > > >-- > > > > > >James R. Leu > > > > > > > > > > > >_______________________________________________ > > > > > >mpls-linux-general mailing list > > > > > >mpl...@li... > > > > > >http://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > > > > > > > > > > > > > > >_________________________________________________________________________ > > > > > Get Your Private, Free E-mail from MSN Hotmail at > > > >http://www.hotmail.com. > > > > > > > > > > > > > > > _______________________________________________ > > > > > mpls-linux-general mailing list > > > > > mpl...@li... > > > > > http://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > > > > > > >-- > > > >James R. Leu > > > > > > > >_______________________________________________ > > > >mpls-linux-general mailing list > > > >mpl...@li... > > > >http://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > > > > > > >_________________________________________________________________________ > > > Get Your Private, Free E-mail from MSN Hotmail at > >http://www.hotmail.com. > > > >-- > >James R. Leu > > _________________________________________________________________________ > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com. > > > _______________________________________________ > mpls-linux-general mailing list > mpl...@li... > http://lists.sourceforge.net/lists/listinfo/mpls-linux-general -- James R. Leu |
