The MPLS WG Archive

[Gaitonde Anandprasanna <prasanna@csa.iisc.ernet.in>]

I wanted to know whether  the messages   like Label withdraw/ Label
release are as spcified by LDP or are the present in RSVP-TE also.

The same case for No_Lbl_Resources notification message.


Thanks in advance
Pras



                 
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On Thu, 19 Oct 2000 seenu@samsung.co.kr wrote:

> Hi mohan,
> 
> Sorry for a late reply.
> 
> Take the case  where an LSR has sent a No_Lbl_Resources notification to the peers that have requested for a label.
> When Labels are available the LSR sends first a Lbl_Resources_Available notification and then sends a Label_Mapping msg.
> See in this case, instead of sending two messages seperately, y can't u include the Status code ( Lbl_Resources_Available) in the
> label mapping msg itself, which takes less time compared to the earlier one (since processing of a msg takes more time than a TLV).
> Anyway if an LSR is not ready to handle that tlv it can always ignore it (draft-notifocation msg)
> 
> Take one more case : An upstream peer has detected a loop, so first it will send a loop_detected_noti and then sends a Lbl_release msg.
> In this case also, u can include Status_tlv in the Lbl_Release msg
> 
> So depending on the situation it will reduces the computation.
> 
> Hope it will help u.
> 
> regards
> Seenu
> 
> >       In the ldp-11 draft ,it's given that the status TLV
> >  can be included in ldp messages which need not be
> >  notif.
> >      I feel there is a situation like the LSP got preempted,
> >   which is a defined new status code, in such case it's helpful.
>   
> >      But do u think it's helpful in adding the status TLV 
> > which ceratinly increases the processing at each node.
>