Re: [mpls-linux-devel] linux-kernel-2.6.14

[Bob B. <bob...@gm...>]

On 12/6/05, James R. Leu <jl...@mi...> wrote:
> You're getting bitten by my lack of new documentation.
>
> With the iproute2 that is in the dev tree there is a new
> syntax.  Looking at the output of 'ip route help' would have helped you,
> but here it the new syntax you want to use:
>
>     ip route add 10.0.0.0/16 via 192.168.1.1 mpls 0x2
>

ok, thanks, I get a step further

root@alakazam:~# /usr/sbin/ip route add 172.16.87.21/32 via
172.16.87.21 mpls 0x2

does not complain but,

root@alakazam:~# /usr/sbin/mpls nhlfe show

just sits there and doesn't return.

root@alakazam:~# tail -n 30 /var/log/debug
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:398:genl_mpls_nhlfe_dump: Enter: entry 0
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:402:genl_mpls_nhlfe_dump: Dump: entry 0
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:249:mpls_fill_nhlfe: enter
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:49:mpls_copy_instr: enter
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_opcode.c:364:mpls_unbuild_opcode_push: enter
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_opcode.c:369:mpls_unbuild_opcode_push: exit
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_opcode.c:1109:mpls_unbuild_opcode_set: enter
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_opcode.c:1115:mpls_unbuild_opcode_set: exit
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:63:mpls_copy_instr: exit
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:266:mpls_fill_nhlfe: exit
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:419:genl_mpls_nhlfe_dump: Exit: entry 1
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:398:genl_mpls_nhlfe_dump: Enter: entry 1
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:402:genl_mpls_nhlfe_dump: Dump: entry 0
Dec  6 16:59:51 alakazam kernel: MPLS DEBUG
net/mpls/mpls_netlink.c:419:genl_mpls_nhlfe_dump: Exit: entry 1



> If you plan on using the iptables from my dev tree, there is a new
> syntax for that as well:
>
>     iptables -A OUTPUT -d 10.0.0.1/32 -j mpls --nhlfe=3D0x2
>

yes, I will need this as well, but first things first. :)

> In the dev tree there is also support for ebtables, if you plan
> on doing ethernet over MPLS.  I have an example I can send you if
> you're interested.
>
> Version 1.950 also supports PHP. The same feature can
> be used to prevent an IP lookup on the egress LER.
>
> The mpls_tunnel interface has also changed in 1.950.  Since I told
> you to make MPLS static in the kernel, you will only have one
> tunnel interface.  Once I fix the module loading (or add a new config
> item for the MPLS tunnel interface) then you will be able to load the
> module multiple times for multiple tunnel interfaces.
>

I will live with one tunnel while I get to know this stuff.

> I'm probably forgetting something, let me know if you run into more
> problems.
>
> BTW look at the output of 'dmesg' for some insight as to what is
> happening inside of the MPLS code.  If you want to turn that off
> just do 'echo 0 > /sys/mpls/debug'
>

wilco.
<snip old message>