12-22-2010 12:18 AM - edited 03-04-2019 10:51 AM
I've MPLS unicast IP forwarding applicationn on Cisco router. Now I want to have same on Juniper M series routers. The Juniper is PE in my network and OSPF and LDP is running on it. It learns and advertises the lables correctly. Learned routes are even installed on inet.3 routing table. But the problem is that there is no lable in inet.0 routing table. So when ip traffic ingresses the router, it forwards it to next-hop without lable. Do you know how I can forward those incoming packet with MPLS lable to next-hop?
Thank you,
01-02-2011 09:50 PM
what do you mean by -- the problem is that there is no lable in inet.0 routing table. So when ip traffic ingresses the router, it forwards it to next-hop without label.
If the device learns and advertises labels correctly, if the next hop interface is an MPLS enabled interface, it has to do label switching.
Could you eloborate the problem with the necessary outputs like LFIB table.
01-03-2011 12:02 PM
Hello Ali,
what you see is the normal behavior of a Juniper M router.
there are some commands that can be used to achieve the use of the LSP for IPv4 packets with destination = LSP destination the best choice should be:
config
edit protocol mpls
set traffic-engineering mpls-forwarding
However, if you define a L3VPN service you can see the use of the LSP on this service without using the above command (VPNV4 packets will use the LSP even without the command above)
see
Hope to help
Giuseppe
01-04-2011 04:36 AM
juniper router by default advertise only labels bind to it's loopback address, the received label are installed in extra routing table inet.3 which is ONLY
used by bgp, in other word, only bgp next hop address will have mpls label switched path, wihich is all you need for mpls l3vpn, or any prefixes advertised using bgp. this is different than cisco LDP "announce any and use mpls for any" behavior.
HTH
Guan
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