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Re: AW: AW: VC-4-64c as forwarding adjacency
Hi Marteen,
I fully agree with the diagram below. There will be a ATM VP
link (VC-4-64c) between nodes A and D.
Can u please elaborate more on this one :
"ATM VP connection controllers in A and D exchange ATM VP labels to
setup ATM VP connections"
How will the ATM VP labels be distributed between nodes A and D ? Is it
not with in the scope of GMPLS signalling ?
If I am misinterpreting the concept of LSP hierarchies, please let me know
that too.
Regards,
manoj.
>From: Maarten Vissers <mvissers@lucent.com>
>To: manoj juneja <manojkumarjuneja@hotmail.com>
>CC: ccamp@ops.ietf.org
>Subject: Re: AW: AW: VC-4-64c as forwarding adjacency
>Date: Fri, 07 Dec 2001 11:00:54 +0100
>
>Manoj,
>
>When the VC-4-64c is used as "FA" it provides e.g. an ATM VP link to the
>ATM VP
>layer network. As such, ATM VP signals are being routed via this ATM VP
>link
>supported by the VC-4-64c trail. So ATM VP labels will be used between
>nodes A
>and D.
>
> NE A NE B NE C NE D
>|<---------->|<---------------->|<------------------->|<--------------->|
>
> |||| ||||
>ATM VP Fabric ATM VP Fabric
> |||||| ||||||
> VC-4-64c VC-4-64c
> port port
> | |
> | |
> | VC-4-64c Fabric VC-4-64c Fabric |
> | | |||| |||| | |
> STM-64 STM-64 STM-256 STM-256 STM-64 STM-64
> port port port port port port
> | | | | | |
> ------------- ------------- -------------
>
>When the ATM equipment at A needs a 10G link with the aTM equipment at D,
>it
>requests a regular VC-4-64c connection between A and D. As the connection
>terminates at VC-4-64c ports automatically there is an ATM VP link created.
>The
>ATM VP connection controllers in A and D exchange ATM VP labels to setup
>ATM VP
>connections.
>
>When the Vc-4-64c connection had to be setup, the VC-4-64c connection
>controllers in A, B, C and D will exchange VC-4-64c labels.
>
>When the ATM equipment is in a user domain, the interface between nodes A
>and B
>and nodes C and D are UNIs. In that case the VC-4-64c connection
>controllers in
>nodes A and D are replaced by VC-4-64c call controllers. Then the
>interactions
>are between calling/called party call controllers (in nodes A and D) and
>network
>call controllers, and network call controller and connection controllers in
>nodes B and C.
>
>As you see there is no notion of FA needed.
>
>Regards,
>
>Maarten
>
>
>manoj juneja wrote:
> >
> > Hi Marteen,
> > Agreed. VC-4-64c connection can be advertised as a FA and
> > can carry IP/ATM or ethernet traffic.
> >
> > Now take the case where multiple LSPs are to be tunneled through the
> > VC-4-64c connection (FA-LSP).
> > What about the label ? What type of label the tail end of VC-4-64c FA
> > -LSP i.e. node D will pass to the node A (i.e. head end of vc-4-64c FA
> > -LSP) ?
> > The LSP encoding and switching types are different for FA-LSP and the
> > LSP which is to be tunneled through the FA-LSP.
> >
> > Regards,
> > manoj.
> >
> > >From: Maarten Vissers <mvissers@lucent.com>
> > >To: "'manoj juneja'" <manojkumarjuneja@hotmail.com>
> > >CC: ccamp@ops.ietf.org
> > >Subject: Re: AW: AW: VC-4-64c as forwarding adjacency
> > >Date: Thu, 06 Dec 2001 12:24:32 +0100
> > >
> > >Manoj,
> > >
> > >In transport terminology I would refer to this as a VC-4-64c trail
> > >supporting an
> > >IP, ATM or Ethernet link.
> > >
> > >Regards,
> > >
> > >Maarten
> > >
> > >Heiles Juergen wrote:
> > > >
> > > > Manoj,
> > > >
> > > > this has nothing to do with forwarding adjacency. It is a
>restriction of
> > >the transport plane. A VC-4 cannot be transported in a VC-4-64c. A
>VC-4-64c
> > >supports IP, ATM, Ethernet as client signal, but not a VC-4 or
> > >VC-3/2/12/11.
> > > > So you can have a VC-4-64c forwarding adjacency for IP, ATM or
>Ethernet
> > >clients.
> > > >
> > > > Juergen
> > > >
> > > > > -----Ursprüngliche Nachricht-----
> > > > > Von: manoj juneja [mailto:manojkumarjuneja@hotmail.com]
> > > > > Gesendet: Mittwoch, 5. Dezember 2001 19:49
> > > > > An: juergen.heiles@icn.siemens.de; ccamp@ops.ietf.org
> > > > > Betreff: Re: AW: VC-4-64c as forwarding adjacency
> > > > >
> > > > >
> > > > > Hi Juergen,
> > > > > Does this mean the forwarding adjacency concept is not
> > > > > applicable to concatenated signals/LSPs ? I hope forwarding
> > > > > adjacecny of
> > > > > virtual concatenated LSP should be allowed.
> > > > >
> > > > > Regards,
> > > > > manoj.
> > > > >
> > > > >
> > > > > >From: "Juergen Heiles" <juergen.heiles@icn.siemens.de>
> > > > > >To: "'manoj juneja'" <manojkumarjuneja@hotmail.com>,
> > > > > <ccamp@ops.ietf.org>
> > > > > >Subject: AW: VC-4-64c as forwarding adjacency
> > > > > >Date: Wed, 5 Dec 2001 10:19:03 +0100
> > > > > >
> > > > > >No, that is not possible as you cannot transport a VC-4 in a
> > > > > VC-4-64c. A
> > > > > >VC-4-64c only supports dat clients like ATM, IP, Ethernet.
> > > > > >
> > > > > >Juergen
> > > > > >
> > > > > > > -----Ursprüngliche Nachricht-----
> > > > > > > Von: manoj juneja [mailto:manojkumarjuneja@hotmail.com]
> > > > > > > Gesendet: Dienstag, 4. Dezember 2001 23:44
> > > > > > > An: ccamp@ops.ietf.org
> > > > > > > Betreff: VC-4-64c as forwarding adjacency
> > > > > > >
> > > > > > >
> > > > > > > Hi All,
> > > > > > > Can I tunnel a request for VC-4 LSP on VC-4-64c
> > > > > forwarding
> > > > > > > adjacency ? If yes, then what would be the {suklm} ?
> > > > > > >
> > > > > > > Regards,
> > > > > > > manoj
> > > > > > >
> > > > > > >
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