The MPLS WG Archive

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

Eric,

Understood.

-Shahram

> -----Original Message-----
> From: Gray, Eric [mailto:egray@celoxnetworks.com]
> Sent: Tuesday, November 19, 2002 11:09 AM
> To: Shahram Davari; 'MPLS@UU.net'
> Subject: RE: Load balancing draft
> 
> 
> Shahram,
> 
> 	I don't think the issue is whether or not people feel
> that this work is applicable.  I believe it might be better
> to characterize the issue as whether or not it is practical
> (or even feasible) to do this given stated constraints.
> 
> 	As with QoS and other types of value add functionality,
> the 9 letter acronym TANSTAAFL applies.  There ain't no such
> thing as a free lunch - in this case or in any other.  Given
> the current situation with respect to existing and deployed
> hardware, about the only short term approach to ensure that
> probe packets follow the data path is likely to be disabling 
> load sharing.
> 
> 	In terms of specifying another approach, at least for
> the alternatives discussed, these are potentially areas of
> product differentiation and/or long term "fixes".  Hence it
> is probably not something we necessarily want to undertake
> at this point.
> 
> Eric W. Gray
> Systems Architect
> Celox Networks, Inc.
> egray@celoxnetworks.com
> 508 305 7214
> 
> 
> > -----Original Message-----
> > From: Shahram Davari [mailto:Shahram_Davari@pmc-sierra.com]
> > Sent: Tuesday, November 19, 2002 10:37 AM
> > To: 'MPLS@UU.net'
> > Subject: Load balancing draft
> > 
> > Hi,
> > 
> > One of the criticism for this draft was that it is designed 
> to overcome
> > Y.1711 limitation, in which a reserved label is used. As I mentioned
> > in the meeting the MPLS-Ping also requires usage of an 
> extra reserved
> > label for non-IP carrying LSPs:
> > 
> >   "To test an LSP that carries non-IP traffic, before 
> injecting ICMP and
> >    MPLS ping messages into the LSP, the IPv4 Explicit NULL 
> label should
> >    be prepended to such messages."
> > 
> > So this draft is equally applicable to MPLS-ping.
> > 
> > Yours,
> > Shahram
>