Re: [mpls-linux-general] Problem with MPLS on Kernel 2.6.3

[James R. L. <jl...@mi...>]

The iproute2 patch for the 2.6 series is differnt then the 2.4 series.  Make
sure you have a recent iproute2 patch.  The command syntax has changed as
well for the 2.6 series:

ip route add 10.100.0.4/32 via 10.100.0.4 spec_nh 0x8847 <key>

I'm not sure of the iptables problem, but others have reported issues with
the new iptables.  I will have to look into it.

On Thu, Jun 10, 2004 at 07:39:12PM +0200, Pierre ANSEL wrote:
> Hello,
> 
> We are trying to make MPLS run on a kernel 2.6.3 but we can't see any MPLS 
> packet going out of our machines.
> 
> We are using this topology :
> Machine 1 -------------- Machine 2
> 10.100.0.1				10.100.0.4
> 
> On machine 1, we installed mplsadm2 and configured a label with
> mplsadm2 -A -O 0
> mplsadm2 -O 0x2 -o push:gen:10000:set:eth1:ipv4:10.100.0.4
> 
> cat /proc/net/mpls/out gives :
> 
> NHLFE Key:0x00000002 Instruction Set
> PUSH PUSH(gen 10000)
> SET SET(eth1,<unk l3>)
> 
> ip route show give :
> 10.100.0.4 via 10.100.0.4 dev eth1 lsp 0x2
> 
> With tcpdump, we can only see IPv4 packets when we ping 10.100.0.4 and no MPLS 
> packets.
> 
> Moreover, we can't make iptables run properly. 
> We tried iptables -A OUTPUT -d 10.100.0.4/32 -j spec_nh --spec_nh 0x8847:0x2 
> and we got
> iptables: No chain/target/match by that name
> 
> Nevertheless, it seems that iptables succeeded in loading libspec_nh.so 
> without any problems.
> 
> Do someone have any idea on how to fix these 2 problems ?
> 
> Thanks a lot !
> 
> Pierre
> 
> 
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-- 
James R. Leu
jl...@mi...