Re: [mpls-linux-general] problem witth testing mpls and MTU=0

[lili l. <lit...@gm...>]

Hi,

Thanks for your response. I will follow your "how to" and give you a
feedback on the results.


2010/9/11 Renato Westphal <ren...@gm...>

> Hi,
>
> This problem occurs in the new MPLS 1.970 when you add a new NHLFE key
> without setting the MPLS labelspace of the outgoing interface first.
>
> This have already been fixed. I'm providing you below some patches along
> with a quick compilation how-to.
>
> The mpls-linux project is under maintance, in the next days or weeks we
> expect to provide a new official release (with rpms) and more info on the
> project wiki. One of our main goals for now is to get LDP working, being
> that a lot of progress have already been made.
>
> Regards,
> Renato.
>
>
> __________________________________________________________
>
> HOWTO
>
>  Kernel:
>
> 1 - Get kernel 2.6.32.16:
> http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.32.16.tar.bz2
>
> 2 - Apply attached patch: patch -p1 < ../linux-kernel.patch
>
> 3 - build and install the kernel (no mpls requisites on make menuconfig)
>
> 4 - boot with the patched kernel
>
> 5 - cd ~/
>     git clone git://repo.or.cz/mpls-linux.git
>     cd mpls-linux/src
>     patch -p1 < ~/mpls-src.patch
>     make
>     nano /etc/modules
>     //add the following lines: mpls, mpls4, mpls_tunnel, xt_mpls
>     cd /lib/modules/2.6.32.16/
>     ln -sf ~/mpls-linux/src/mpls.ko mpls.ko
>     ln -sf ~/mpls-linux/src/mpls4.ko mpls4.ko
>     ln -sf ~/mpls-linux/src/mpls_tunnel.ko mpls_tunnel.ko
>     ln -sf ~/mpls-linux/src/xt_mpls.ko xt_mpls.ko
>     depmod -a
>     reboot
>     check if the modules are running:
>     lsmod | grep -i mpls or
>     dmesg | grep MPLS
>
>
> Patch for iproute2:
>
> 1 - Get iproute2-2.6.33:
> http://devresources.linuxfoundation.org/dev/iproute2/download/iproute2-2.6.33.tar.bz2
>
> 2 - Apply attached patch: patch -p1 < ../iproute2-2.6.33-mpls.patch
>
> 3 - $ make
>      # make install (*)
>
> 4 - 'mpls' command will be available
>
> * build dependencies (debian5): libdb-dev, bison, flex
>   uninstall your existing version of iproute to avoid conflicts
>
>
> Patch for iptables:
>
> 1 - Get iptables-1.4.7:
> http://www.netfilter.org/projects/iptables/files/iptables-1.4.7.tar.bz2
>
> 2 - Apply attached patch: patch -p1 < ../iptables-1.4.7-mpls.patch
>
> 3 - $ ./configure
>     $ make
>     # make install (*)
>
> * uninstall your existing version of iptables to avoid conflicts
>
> 2010/9/11 lili lili <lit...@gm...>
>
>>  Hi,
>>
>> I need help for my linux-mpls tesbed.
>> I success to configure my testbed like the one in "sourceforge - example"
>> But if I test with a ping command, it does not work.
>> In addition I have the following output after executing  "*mpls nhlfe add
>> key 0 instructions push gen 1000 nexthop eth2 ipv4 .... *"
>> *
>> NHLFE entry key 0x00000002 mtu 0 propagate_ttl
>>      (0 bytes, 0 pkts)*
>>
>> Is it normal to have MTU=0?
>>
>> Thanks for helping me.
>>
>>
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>>
>>
>