SV: Minutes routing-wg RIPE 47

Hi Henrik,

Thanks for the clarifications. I tried to update minutes through your
comments. Please, have a look at and let me know if still something is
missing.

Routing-WG last time was quite active, and it was difficult to catch 
everything. I think the presentations would help the people who like to 
know more about what had been discussed in last Routing-WG.

Arife

--
Minutes of the Routing Working Group held at RIPE 47, Amsterdam,
Tuesday, 27th January 2004, 16:00 - 17.30.

Session 1:

  * Administrivia
     (Joao Damas)

	Chair: 			Joao Damas
	Scribe: 		Arife Vural, RIPE NCC
	Attendees:		
	Minutes from R46:	No comments -> approved!
	Actions from R46:	None

  * Call for Participation: Inter-Domain Routing Workshop

  	Inter-Domain Routing Workshop will be held on 1-2 May, 2004 in
	Amsterdam just before RIPE48. Number of attendees is limited. If
	you are planning to attend, it's better to sign up as soon as
	possible.

	Email list:
		idrwq at ripe.net

  * Notification on RIPE Routing Registry courses

	Upcoming RIPE Routing Registry courses can be seen from

	http://www.ripe.net/cgi-bin/courselist.pl.cgi

  * RISwhois - mapping IP to ASN using RIS collected BGP data
    (Rene Wilhelm)

	A new interface to data collected by RIS project. That allows
	IP address matching to AS number.

	Questions:

	"Are withdrawals and updates are counted?" RIB data is used.
	
	"All AS are listed?" Yes

	"How do you handle AS-set?" It is recorded and it's listed as
	different objects.


  * IGP Fast Convergence in a ISP Backbone
    (Clarence Filsfils)

	This case study is about the convergence of IS-IS protocol and puts 
	forward some suggestions on how to get a better convergence time.

	Questions:

	"Was there propagation delay?" Comeback on few slides. In the study
	case, we do not have too many hops because of that you do not have
	much propagation delay.

	"Which one is prioritized?" /32 is first converged, and then the rest.

  * Operator Experience from IS-IS Convergence Tuning
    (Henrik Villfoer)

	This study is done on the TeliaSonera network. Motivation for such a
	study is to get a fast convergence time, around 1 sec, for time sensitive
	new IP services and find the limits of the protocol, IS-IS. Mostly
	Cisco products are used.

	Questions&Comments:

	"How many LSPs were measured after tunning?" About 35 LSPs.
	
	Clarence Filsfils proposed to tune the process-max-time since it should 
	give smaller maximum flooding delays (among other things).

	There was a comment from audience about the convergence measurement which 
	was done by TeliaSonera:

	"It would be more interesting if there would be more info about flooding 
	loops."

	Henrik Villfoer: We actually only measure the number of test packets lost. 
	Systematically inspecting the TTL would tell us if we had transient loops. 
	I could do naught but agree but complemented with the information that manual 
	inspection of a number of cases has shown that loops do exist but are very 
	short lived and uncommon. 
	
  * IP Fast Convergence Project
    (Nicolas Dubois / Benoit Fondeviole)

	France Telecom R&D did  this study to how to improve IP convergence
	in various protocols. Also did study how to solve the problems
	they had in L2TP tunnels, and MPLS/VPN.

	Questions:

	"What do you mean by L2TP is used for INTERNET aggregation?"

	"When you say you have convergence problems on MPLS/VPN to which kind of 
	problems do you refer?" BGP next-hopt change and NTP.

	"How does one update make such a change on BGP convergence?" Update
	to change the FIB.

  * AOB

	There is no other business.