Configuring OSPF on MPLS enabled interfaces
on the topology above MPLS IP command is enabled on all physical interfaces of the routers. OSPF is configured on all physical and Loopback interfaces of the routers.
I would like to know if IP packets from end to end get Tunneled through MPLS "Tunnel" ?
PE1#sh run | beg router ospf
router ospf 1
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 192.168.23.0 0.0.0.255 area 0
interface FastEthernet0/1
ip address 192.168.23.2 255.255.255.0
mpls ip
P#sh run | beg router ospf
router ospf 1
log-adjacency-changes
network 0.0.0.0 255.255.255.255 area 0
interface FastEthernet0
interface FastEthernet0/0
ip address 192.168.23.3 255.255.255.0
mpls ip
!
!
interface FastEthernet0/1
ip address 192.168.34.4 255.255.255.0
mpls ip
PE2#sh run | beg router ospf
router ospf 1
log-adjacency-changes
network 4.4.4.4 0.0.0.0 area 0
network 192.168.34.0 0.0.0.255 area 0
interface FastEthernet0/0
ip address 192.168.34.4 255.255.255.0
mpls ip
PE1#traceroute 4.4.4.4 source loopback 0
Type escape sequence to abort.
Tracing the route to 4.4.4.4
1 192.168.23.3 [MPLS: Label 17 Exp 0] 48 msec 20 msec 20 msec
2 192.168.34.4 44 msec 44 msec 20 msec
PE1#
ASKER
what I am trying to understand is the Traceroute will work even if I did not configure MPLS IP on the physical interfaces.
Now that I have configured MPLS IP on the interfaces, will this serve as a tunnel for Traceroute to go through ?.
or the Traceroute will use OSPF ?
if I an not wrong MPLS is a Tunnel, in this case it goes between Layer 2 and IP (OSPF)
Now that I have configured MPLS IP on the interfaces, will this serve as a tunnel for Traceroute to go through ?.
or the Traceroute will use OSPF ?
if I an not wrong MPLS is a Tunnel, in this case it goes between Layer 2 and IP (OSPF)
ASKER CERTIFIED SOLUTION
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ASKER
OK so the Packet went through MPLS tunnel, and as you said MPLS relies on IGP (in our case it is OSPF)
ASKER
Thank you
You're welcome.
You can find more details in presentation - MPLS for Dummies