RTGWG IETF79 Minutes:
Scribe:  Ning So

Guest appearance:

Dave: question on scalability of moitoring LSP, tandem or end-to-end

Answer: 5-10K base station, each PTN node carry 1-5K LSP to each station.

Dave: so the LSP could be larger

Chris: window opportunity closes.  Freezing network? Why 2010?  Moving
to LTE, management in SDH circuit world or move to packet world?

A: 3G pushed the needed.  Standard conflict between ITU and IETF.
Lower cost for China mobile and looking for solution.  Yes, need to
re-train, but wanting soft migration.  The connection model is still
PTP.


Lucy: PTP? 

A: Service is PTP.  Layer 3 VPN in core. 

L: PTN in backhaul?

A: yes
 

Chris: L3 in core. Or L3 extend to edge?

A:  2 schemes, 1 for PYN enhancement, 1 for PE in edge.  Evaluation on going.

 

General WG


Dave: Generic framework, inviting drafts?

Alia: yes,

 

Composite Link Tony
 

Lucy: during local recovery, keep checking?

A: not to flap too frequently, one component fail, remove, consume and
update, flush it but not in a rush

Albert: Any reduction is valuable,

Tony: Summarize?

Albert: yes

John: Tony's computation seems summarize not necessary

Dave: Put it in framework compare solutions.  What savings do we get
summarize vs. not in different type of networks?

John: do a study to make sure solution is rational. 

Alia: trade offs list in framework.  Solution and architecture should
have why we do it this way.

John:  needs study

Alia: We don't do protocol work, we need to collect different pieces
together.


 

Fast Notification


John: 2005 paper reducing flooding does not help

A: we read it.  They did not do IS-IS load.  I have seen numbers all
over place.  It is unpredictable.

Stewart: If there is no significant evidence it helps, then it does
not justify the complexity.  FRR had significant evidence.

A: Agree prove is needed.

Comment: numbers will be provided

Dave: individual link FRR does not reserve BW, ring expensive.  CL
link not down, but BW reduced.  So it is different, it may or may not
help.

A: it may be another application for it.

John: IGP as good as FRR?

A: Propagation delay does not matter. Packet on the wire not lost

Alia: Would be interesting to see on mail list.  

John:  Done