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RE: OSPF over MPLS tunnel

  • From: "Wenjing Chu" <wchu@nexthop.com>
  • Date: Thu, 14 Mar 2002 10:54:40 -0500
  • Resent-Date: Thu, 14 Mar 2002 12:20:47 -0500
  • Thread-Index: AcHK/Tc5Sp0gXh1tSnibz6s5fYu5YgAcstLA
  • Thread-Topic: OSPF over MPLS tunnel
  • To: "Gopala Naganaboyina" <gnaganab@yahoo.com>, "Carlos Patriawan" <cpatriaw@pluris.com>, "Sheng Sun" <shengs@nortelnetworks.com>, "mpls_list" <mpls-ops@mplsrc.com>
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when juniper does the same for igp short-cuts, ospf uses it to calculate routes for mpls rib only, i.e. not to be used by normal ip routing (default behavior).
is that true in cisco as well?

Wenjing

> -----Original Message-----
> From: Gopala Naganaboyina [mailto:gnaganab@yahoo.com]
> Sent: Wednesday, March 13, 2002 5:39 PM
> To: Carlos Patriawan; 'Sheng Sun'; mpls_list
> Subject: RE: OSPF over MPLS tunnel
> 
> 
> on cisco, you can't make ospf neighbors over TE
> tunnel. remember, tunnel is unidirectional. 
> However, you can acheive the same results by
> 'autoroute announce', also called igp short-cuts. When
> we confgi the tunnel for autoroute announce, it
> installs ospf routes beyond the te-tunnel, to take the
> tunnel.
> hope that helps,
> rgds,
> gopal
> 
> --- Carlos Patriawan <cpatriaw@pluris.com> wrote:
> > if you've traffic (FEC) mapped to LSP then it will
> > use the LSP, otherwise it
> > use IP.
> > 
> > In case of multicast packet it will go thru IP.
> > 
> > Carlos
> > 
> > -----Original Message-----
> > From: Sheng Sun [mailto:shengs@nortelnetworks.com]
> > Sent: Wednesday, March 13, 2002 6:55 AM
> > To: mpls_list
> > Subject: OSPF over MPLS tunnel
> > 
> > 
> > 
> > Hi : 
> >       A simple question in terms of configuring OSPF
> > over MPLS tunnel, I am
> > gonna to configure an OSPF process on both PE
> > routers over a MPLS tunnel. My
> > question is:
> > 
> >    1) Will the OSPF hello message which is multicast
> > go over the tunnel or
> > it will just be sent hop by hop along the regula
> > MPLS route ? 
> > 
> >          The question is raised 'cause the non-mpls
> > traffic and MPLS traffic
> > will go out thru the same physical port. 
> >    2) Will the OSPF neighbour be established over  
> > this tunnel? 
> >        
> >    Thanks and regards! 
> >     Robert Sun 
> >    03/13/02 
> > 
> > 
> 
> 
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