[mpls-linux-general] Help me to understand

[windtim\@libero\.i <wi...@li...>]

Hi James,
            i'm reading mail on the mailing list and i've not =
understood your
answer to one (Antonio Mancuso 11/8/03): 
=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
 Hello, =0D
=
 on my test network I noticed a strange bahaviour
 regarding MPLS traffi=
c.
 
 Here my problem:
 
 Host A: 192.168.10.10   ------------>    Ho=
st B: 192.168.10.20
 
 
 On host A:
 - mplsadm2 -A -O 0
   Key: 0x00=
000385
   Out Segment add: Success
 
 - mplsadm2 -O 0x385 -o push:gen:=
170:set:tap0:ipv4:192.168.10.20
   Out Instr: Success
 
 - more /proc/=
net/mpls_out
   0x00000385 0/0/0 1 PUSH(gen 170) SET(tap0,192.168.10.20)=

 
 Now if I do, from A: ping 192.168.10.20 on B I receive normal ether=
net packet
 and that"s fine.
 
 - iptables -t mangle -A OUTPUT -d 192.=
168.10.20 -j MPLS --set-key 0x385
 
 Now, as expected, on B I receive M=
PLS packet marked with 170 as label.
 - more /proc/net/mpls_out
   0x00=
000385 70/5880/0 2 PUSH(gen 170) SET(tap0,192.168.10.20)
 
 Now If I re=
move the iptables entry in this way:
 - iptables -t mangle -D OUTPUT -d =
192.168.10.20 -j MPLS --set-key 0x385
 
 on host B I still receive MPLS=
 packet marked with 170 as label
 and
 
 - more /proc/net/mpls_out
  =
 0x00000385 183/15372/0 2 PUSH(gen 170) SET(tap0,192.168.10.20)
 
 the =
counter continue to go up.
 
What's the strange thing? He first time se=
t host A to give packets to host B
with MPLS label 0x7, after remove thi=
s setting but there is outgoing label space
setted yet.
Can you help me=
 to understand?=0A=0A=0A=0A______________________________________________=
______________=0ALibero ADSL: navighi gratis a 1.2 Mega, senza canone e c=
osti di attivazione. =0AAbbonati subito su http://www.libero.it =0A