RE: draft-bonica-tunneltrace-02

[Shahram Davari <Shahram_Davari@pmc-sierra.com>]

Hi Ron,


> -----Original Message-----
> From: Ron Bonica [mailto:Ronald.P.Bonica@wcom.com]
> Sent: Thursday, February 21, 2002 11:34 AM
> To: Shahram Davari; ccamp@ops.ietf.org
> Subject: RE: draft-bonica-tunneltrace-02
> 
> 
> Sharam,
> 
> Section 7 of this document enumerates a some minimal protocol 
> requirements.
> Specifically, it states that:
> 
> o a traceResponse will carry information regarding a section 
> of the traced
> path

Why not information about the whole path? Is it becasue GTTP can't do it?

> o a traceProbe will elicit a traceResponse

Why not a series of trace responses? Anything fundamentally wrong with it or is it becasue GTTP can't do it?

> o UDP will carry traceProbes and traceResponses

Why not TCP or even GTTP over IP?

> o the protocol will be stateless
> o each device within the trace path need not maintain an IP 
> route back to
> the device that hosts that tracing application

Why? Why return path from head of the path is not enough?

> 

> Although these broad brushstrokes do not specify a protocol, 
> they provide
> direction to protocol developers.

To develop GTTP!

 We are looking for an IP 
> based protocol
> that can probe network elements about whatever tunnels they maintain,
> regardless of the tunnel type. We are not looking to extend 
> the capabilities
> of any particular tunneling technology.

I know. But the protocol restrictions that are mentioned must be justified.

-Shahram
> 
>                                       Ron
> 
> > -----Original Message-----
> > From: owner-ccamp@ops.ietf.org [mailto:owner-ccamp@ops.ietf.org]On
> > Behalf Of Shahram Davari
> > Sent: Tuesday, February 19, 2002 5:29 PM
> > To: ccamp@ops.ietf.org
> > Subject: RE: draft-bonica-tunneltrace-02
> >
> >
> > Hi,
> >
> > Although this document is a generic requirement for tunnel
> > tracing, I find many protocol specific requirements that are not
> > actually a requirement, rather they are suggesting a 
> specific solution.
> >
> > For example:
> >
> > "The protocol elicits a series of traceResponse messages."
> > "Each traceResponse message represents a hop that connects the
> > head-end of the traced path to the tail-end of the traced path"
> > "Each traceProbe message elicits exactly one traceResponse message."
> > "UDP carries traceProbe and traceResponse messages to their 
> destinations."
> >
> >
> > Thanks,
> > -Shahram
> >
> >
>