The MPLS-OPS Archive

[Eric Osborne <eosborne@cisco.com>]

On Mon, Jul 28, 2003 at 03:23:42PM +0530, Lars Higham wrote:
> What's going to query the TED if you're not using CSPF?
> 

Unless you configure 'verbatim', we try to verify the path against the
TE DB.  There's no sense in continually trying to signal if the
explicit path that's been defined is down, or is otherwise not going
to work (bad path, not enough BW, etc).


eric


> -----Original Message-----
> From: Stephen Mullaney [mailto:stephen.mullaney@parc-technologies.com] 
> Sent: Monday, July 28, 2003 2:22 PM
> To: 'Terry Lee'; 'Lars Higham'; carlos@carlos.net;
> richard.james@rogers.com
> Cc: mpls-ops@mplsrc.com
> Subject: RE: [MPLS-OPS]: RSVP LSP without CSPF?
> 
> 
> You still the the TED for Cisco to check the destination information.  I
> think the verbatim command will tell it not to check the database.  But
> if you don't use that option then CSPF or no CSPF, the TED will need to
> be present.
> 
> Using explicit paths allows you to use offline calculations to define
> the path without the need for on-board CSPF.
> 
> -----Original Message-----
> From: Terry Lee [mailto:terrylee@huawei.com]
> Sent: 28 July 2003 05:47
> To: 'Lars Higham'; carlos@carlos.net; richard.james@rogers.com
> Cc: mpls-ops@mplsrc.com
> Subject: RE: [MPLS-OPS]: RSVP LSP without CSPF?
> 
> 
> which version does cisco support it ?
>  why cisco router as an ingress doesn't send path message ?
> 
> 
> 
> Thanks and Regards,
> Terry Lee
> 
> > -----Original Message-----
> > From: Lars Higham [mailto:lhigham@yahoo.com]
> > Sent: Monday, July 28, 2003 12:27 PM
> > To: 'Terry Lee'; carlos@carlos.net; richard.james@rogers.com
> > Cc: mpls-ops@mplsrc.com
> > Subject: RE: [MPLS-OPS]: RSVP LSP without CSPF?
> > 
> > 
> > You are correct - no CSPF, no TED requirement -
> > 
> > Regards,
> > Lars
> > 
> > -----Original Message-----
> > From: Terry Lee [mailto:terrylee@huawei.com]
> > Sent: Monday, July 28, 2003 6:44 AM
> > To: carlos@carlos.net; richard.james@rogers.com
> > Cc: mpls-ops@mplsrc.com
> > Subject: RE: [MPLS-OPS]: RSVP LSP without CSPF?
> > 
> > 
> > Hi
> > If it works without cspf, I think ospt-te isn't needed in
> > this case.  am I right?  
> > 
> > 
> > 
> > 
> > Thanks and Regards,
> > Terry Lee
> > 
> > > -----Original Message-----
> > > From: carlos@carlos.net [mailto:carlos@carlos.net]
> > > Sent: Saturday, July 26, 2003 8:58 AM
> > > To: richard.james@rogers.com
> > > Cc: mpls-ops@mplsrc.com
> > > Subject: Re: [MPLS-OPS]: RSVP LSP without CSPF?
> > > 
> > > 
> > > On Fri, 25 Jul 2003 17:22:20 -0400, richard.james@rogers.com wrote:
> > > 
> > > cisco has an option "verbatim" , juniper and others
> > > support it with "no-cspf"
> > > 
> > > thx
> > > 
> > > carlos
> > > 
> > > > 
> > > > Hi,
> > > > Is it possible to configure an RSVP tunnel with IOS so that it 
> > > > doesn't run CSPF, but only uses the strict/loose path? This is 
> > > > when you want to ignore bandwidth and color constraints and only 
> > > > use the ERO
> > > to
> > > > compute the path.
> > > > 
> > > > I haven't been able to find an option for this in the docs, but if
> 
> > > > it's there I'd appreciate if someone
> > > could
> > > > point me to the command name.
> > > > 
> > > > Thanks,
> > > > Richard
> > > > 
> > > > 1
> > > > 
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