Re: [mpls-linux-general] MPLS+IPv6
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Re: [mpls-linux-general] MPLS+IPv6
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From: Bruno J. M. <bj...@me...> - 2004-04-22 11:31:18
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Hi! Are there any changes regarding iptables IPv6 structures manipulation? Can You help me on that? Bruno On Fri, 2 Apr 2004, James R. Leu wrote: > It could very well be that I'm not modifing the correct structures for > IPv6. I will look into that. > > On Tue, Mar 30, 2004 at 08:04:48PM +0100, Bruno Jorge Marcelino wrote: > > > > I think the problem is in iproute patch. Maybe it's only working with > > IPv4 kernel routing structures?? > > > > I looked at the code, and seems that route table manipulation is done > > by the same manner in ldp-portable (and this only works in IPv4) > > > > I established an mpls route (IPv4) between 2 routers and ping was > > successful! > > > > ip route add 10.0.0.1/32 dev eth1 spec_nh 0x8842 0x2 > > > > I'm right or I'm completely wrong?!?! :) > > > > Thank's > > Bruno > > > > On Fri, 26 Mar 2004, James R. Leu wrote: > > > > > On Fri, Mar 26, 2004 at 06:04:41PM +0000, Bruno Jorge Marcelino wrote: > > > > > > > > Yes. I applied the mpls patch in the kernel and build it. > > > > > > I will create a patch that adds debugging to the IPv6 stack to se can > > > see what is happening. > > > > > > > On Fri, 26 Mar 2004, James R. Leu wrote: > > > > > > > > > Did you build the kernel fro a patch? It so, I can send you a patch that > > > > > adds some debugging. Otherwise I will have to build a custom RPM for you. > > > > > > > > > > On Fri, Mar 26, 2004 at 03:47:52PM +0000, Bruno Jorge Marcelino wrote: > > > > > > > > > > > > I've checked dmesg and seems the packets aren't entering the MPLS stack... > > > > > > > > > > > > The only messages that I have are from (modified) mplsadm2 commands: > > > > > > mplsadm2 -d > > > > > > mplsadm2 -A -O 0 -o push.gen.56.set.eth1.ipv6.$NET::65 > > > > > > > > > > > > MPLSADM mplsadm6.c:696:main: Out segment input: 0 > > > > > > MPLSADM mplsadm6.c:692:main: Out instr input: > > > > > > push.gen.56.set.eth1.ipv6.fc97:86d5:b2ed::65 > > > > > > Key: 0x00000002 > > > > > > Out Segment add: Success > > > > > > MPLSADM mplsadm6.c:296:fill_instructions: Instruction: push > > > > > > MPLSADM mplsadm6.c:233:fill_label: Label type: gen > > > > > > MPLSADM mplsadm6.c:296:fill_instructions: Instruction: set > > > > > > MPLSADM mplsadm6.c:185:parse_nh_info: eth1 > > > > > > MPLSADM mplsadm6.c:186:parse_nh_info: fc97:86d5:b2ed::65 > > > > > > MPLSADM mplsadm6.c:208:parse_nh_info: Nexthop protocol: ipv6 > > > > > > MPLSADM mplsadm6.c:600:fill_instructions: Length: 2 > > > > > > Out Instr: Success > > > > > > > > > > > > output of dmesg: > > > > > > > > > > > > MPLS DEBUG net/mpls/mpls_ioctls.c:109:mpls_ioctl: IOCTL Add NHLFE 35847 > > > > > > MPLS DEBUG net/mpls/mpls_out_info.c:322:mpls_add_out_label: enter > > > > > > MPLS DEBUG net/mpls/mpls_out_info.c:395:mpls_add_out_label: added MOI-NHLFE moi-2 > > > > > > MPLS DEBUG net/mpls/mpls_out_info.c:396:mpls_add_out_label: exit > > > > > > MPLS DEBUG net/mpls/mpls_ioctls.c:180:mpls_ioctl: IOCTL Set OUT Instr. 35864 > > > > > > MPLS DEBUG include/net/mpls.h:665:mpls_out_info_hold: moi-2-get 3 > > > > > > MPLS DEBUG net/mpls/mpls_opcode_all.c:203:mpls_build_opcode_push: enter > > > > > > MPLS DEBUG net/mpls/mpls_opcode_all.c:216:mpls_build_opcode_push: exit > > > > > > MPLS DEBUG net/mpls/mpls_opcode_all.c:853:mpls_build_opcode_set: enter > > > > > > MPLS DEBUG net/mpls/mpls_dst.c:170:mpls_dst_alloc: enter > > > > > > MPLS DEBUG net/mpls/mpls_dst.c:229:mpls_dst_alloc: exit(c1663bc0) > > > > > > MPLS DEBUG net/mpls/mpls_opcode_all.c:918:mpls_build_opcode_set: exit > > > > > > MPLS DEBUG net/mpls/mpls_utils.c:349:mpls_instr_register: enter > > > > > > MPLS DEBUG net/mpls/mpls_utils.c:352:mpls_instr_register: registering OP-00-PUSH > > > > > > MPLS DEBUG net/mpls/mpls_utils.c:356:mpls_instr_register: exit > > > > > > MPLS DEBUG net/mpls/mpls_utils.c:349:mpls_instr_register: enter > > > > > > MPLS DEBUG net/mpls/mpls_utils.c:352:mpls_instr_register: registering OP-01-SET > > > > > > MPLS DEBUG net/mpls/mpls_utils.c:356:mpls_instr_register: exit > > > > > > > > > > > > routerPC5:/usr/src/mpls-linux/utils# cat /proc/net/mpls/out > > > > > > MOI Key:0x00000002 Instruction Set > > > > > > PUSH PUSH(gen 56) > > > > > > SET SET(eth1,0.0.0.0) > > > > > > > > > > > > I first used > > > > > > ip6tables -A OUTPUT -d $NET:2::/64 -j spec_nh --spec_nh 0x8847:0x2 > > > > > > and then > > > > > > ip -f inet6 route add $NET:2::/64 dev eth1 spec_nh 0x8847 0x2 > > > > > > > > > > > > and none of the above commands worked! The packets aren't using MPLS to leave the router... > > > > > > > > > > > > I have an IPv6 network with 5 PC's running debian testing/unstable, kernel > > > > > > 2.6.2+mpls-1.922. > > > > > > > > > > > > Can you help me resolve my problem/improving IPv6 support in > > > > > > MPLS and ldp-portable? > > > > > > > > > > > > I can make some changes in the code, but I you need to point me on what to do! > > > > > > > > > > > > Regarding the changes in mplsadm2, you can see the parsing of commands > > > > > > has changed from ":" to "." (because in IPv6, separator is now ":"). This > > > > > > conflicts with IPv4 addresses... > > > > > > > > > > > > Bruno > > > > > > > > > > > > > > > > > > On Wed, 24 Mar 2004, James R. Leu wrote: > > > > > > > > > > > > > On Wed, Mar 24, 2004 at 08:26:38PM +0000, Bruno Jorge Marcelino wrote: > > > > > > > > Hi there! > > > > > > > > > > > > > > > > I'm doing some research on MPLS and IPv6 for my master thesis... > > > > > > > > > > > > > > > > Right now, i'm using kernel 2.6.2 with mpls-1.922 patch! > > > > > > > > > > > > > > I will be releasing 1.930 soon, with support for MPLS ICMP and better > > > > > > > internal locking and referencing. > > > > > > > > > > > > > > > I've changed mplsadm2 to work with IPv6 address, and by looking at > > > > > > > > debugging messages, I think that's all OK (no errors are found). > > > > > > > > > > > > > > Please send me a patch, I'd like to include support for IPv6. > > > > > > > > > > > > > > > Exception is in /proc/net/mpls/in, where SET(ethX,X.X.X.X) appears > > > > > > > > with 0.0.0.0 (because macro NIPQUAD(a) only works with IPv4 addresses, right?). > > > > > > > > > > > > > > This should be an easy to fix. > > > > > > > > > > > > > > > But I have a problem when binding FEC to LSP (with mpls patched > > > > > > > > ip6tables): it isn't working! The traffic is not leaving the router using > > > > > > > > mpls. > > > > > > > > > > > > > > > > Do you have any idea on the problem? > > > > > > > > > > > > > > Did you check the MPLS kernel debug? (execute the command 'dmesg'). > > > > > > > Did the packets ever enter the MPLS stack? What command did you > > > > > > > use? None of the IPv6 code has been tested. I do not have an IPv6 network > > > > > > > to test with (nor do I know how to set one up). > > > > > > > > > > > > > > Have you tried 'ip'? > > > > > > > > > > > > > > ip -f inet6 route add <ipv6 route>/<mask len> dev eth0 spec_nh 0x8847 <key> > > > > > > > > > > > > > > > What's the status on porting ldp-portable to 2.6 kernel with IPv6? > > > > > > > > > > > > > > ldp-portable has the structures to handle IPv6, but no code has been written > > > > > > > to handle IPv6. I would be glad to point you to the places I know that > > > > > > > would be affected by IPv6. > > > > > > > > > > > > > > -- > > > > > > > James R. Leu > > > > > > > jl...@mi... > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------- > > > > > > This SF.Net email is sponsored by: IBM Linux Tutorials > > > > > > Free Linux tutorial presented by Daniel Robbins, President and CEO of > > > > > > GenToo technologies. Learn everything from fundamentals to system > > > > > > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > > > > > > _______________________________________________ > > > > > > mpls-linux-general mailing list > > > > > > mpl...@li... > > > > > > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > > > > > > > > > -- > > > > > James R. Leu > > > > > jl...@mi... > > > > > > > > > > > > > > > > > > > > > ------------------------------------------------------- > > > > This SF.Net email is sponsored by: IBM Linux Tutorials > > > > Free Linux tutorial presented by Daniel Robbins, President and CEO of > > > > GenToo technologies. Learn everything from fundamentals to system > > > > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > > > > _______________________________________________ > > > > mpls-linux-general mailing list > > > > mpl...@li... > > > > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > > > > > -- > > > James R. Leu > > > jl...@mi... > > > > > > > > > > > ------------------------------------------------------- > > This SF.Net email is sponsored by: IBM Linux Tutorials > > Free Linux tutorial presented by Daniel Robbins, President and CEO of > > GenToo technologies. Learn everything from fundamentals to system > > administration.http://ads.osdn.com/?ad_id=1470&alloc_id=3638&op=click > > _______________________________________________ > > mpls-linux-general mailing list > > mpl...@li... > > https://lists.sourceforge.net/lists/listinfo/mpls-linux-general > > -- > James R. Leu > jl...@mi... > |
