The MPLS-OPS Archive

[Robert Raszuk <raszuk@cisco.com>]

Carlos,

>         I though that this reservation is supposed to be a strict resource
> reservation (like IntServ).

All I can say is that You are not the only one who tought that way :).

>         In this case, how can I implement the 'pipe model', where an amount
> of bandwidth between two PEs must be assured ? Make sense these kinds of
> reservations without strict reservations ?

Use diffserv-aware TE. It will still _NOT_ reserver for you any
interface resources (like IntServ would do), but it will provide you
with possibility to use pre-reserved & pre allocated queuing/scheduling
resources in your boxes.

R.

> Carlos Parada wrote:
> 
> Hola Javier,
> 
> > Hi Carlos,
> >
> >     TE tunnels provide no real reservation, it is just in the control
> > plane,
> > not in the forwarding plane. There are no specific buffer space assigned
> > to
> > that tunnel which guarantees anything, it is just that now you have
> > 2000-500=1500 left for new "reservations".
> >
>         [Carlos Parada]
>         I though that this reservation is supposed to be a strict resource
> reservation (like IntServ).
>         In this case, how can I implement the 'pipe model', where an amount
> of bandwidth between two PEs must be assured ? Make sense these kinds of
> reservations without strict reservations ?
> 
> 
> >    Regards.
> >    Javier.
> >
> >                                           ^   ^
> > ==============ooo====(.)v(.)====ooo=====
> > Javier Antich Romaguera
> > Network Consultant
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> > fax: +34 91 536 10 74
> > --------------------------------------------------------------------------
> > -
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> > please visit our website http://www.telindus.com
> > --------------------------------------------------------------------------
> > -
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> > ==================ooo0===0ooo========
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> >
> >
> > > -----Mensaje original-----
> > > De: Carlos Parada [SMTP:carlos-f-parada@ptinovacao.pt]
> > > Enviado el: martes 20 de noviembre de 2001 13:07
> > > Para:       'mpls-ops@mplsrc.com'
> > > Asunto:     Bandwidth Reservation
> > >
> > >
> > > Hi all,
> > >
> > > I'm configuring a bandwidth reservation for a VPN/MPLS tunnel in a Cisco
> > > 7200 IOS 12.1(5)T7. The problem is that it doesn't work. The bandwidth
> > not
> > > guaranteed, having the traffic rate a strange random behavior.
> > >
> > > I'm using just the command
> > > tunnel mpls traffic-eng bandwidth 500
> > > in the tunnel, and
> > > ip rsvp bandwidth 2000 2000
> > > for interfaces. (NOTE: this command is accepted but when I type '?' the
> > > possible commands are not displayed since 'ip rsvp').
> > >
> > > Anybody knows if this version has any bug ? or I'm missing something ?
> > >
> > > Thanks in advance.
> > >
> > > Best Regards.
> > >
> > >
> > >
> > > Carlos Parada
> > >
> > > **********
> > > Carlos Fonseca Parada
> > > Portugal Telecom INovação, S.A.
> > > MSI - Multimédia e Serviços IP - Redes MultiServiço
> > > MIS - Multimedia and IP Services - MultiService Networks
> > > *   Rua Engº José Ferreira Pinto Basto - 3810 Aveiro - Portugal
> > > * Ext: 1317             (+351 234 403317)
> > >
> > >
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