Stig Venaas | 3 Mar 07:42 2009
Picon
Picon

pim wg last call on draft-ietf-pim-sm-linklocal-07

This message announces a pim wg last call on "Authentication and
Confidentiality in PIM-SM Link-local Messages"
<draft-ietf-pim-sm-linklocal-07.txt>.
The last call will conclude at 1700 UTC on Tue, 2009-03-17.

Please respond to this wg last call.  If you support acceptance of the
document without change, respond with a simple acknowledgment, so that
support for the document can be assessed.  Lack of discussion does not
represent positive support.

The draft is available at
http://www.ietf.org/internet-drafts/draft-ietf-pim-sm-linklocal-07.txt

Stig
Mike McBride (mmcbride | 9 Mar 18:47 2009
Picon

Agenda for San Francisco

Here is what we have so far:

draft-ietf-pim-sm-linklocal-07  - Bill
draft-ietf-pim-mtid-00          - Yiqun

Please let us know if you'd like time to present.

thanks,
mike
Apoorva Karan (apoorva | 10 Mar 19:23 2009
Picon

Comment solicitation : draft-karan-mofrr-00.txt

A New Internet-Draft is available : http://www.ietf.org/internet-drafts/draft-karan-mofrr-00.txt. It will be presented at the Protocol Independent Multicast Working Group in San Francisco.

Please review the draft and send your comments to the authors. Thanks in advance.

--Apoorva

_______________________________________________
pim mailing list
pim <at> ietf.org
https://www.ietf.org/mailman/listinfo/pim
Sowmya.Krishnaswamy | 12 Mar 18:44 2009
Picon

Question on SPT switchover on the last hop router (Section 4.2.1 RFC 4601)

Hello, 

Section 4.2.1 of RFC 4601 says that if the SPT threshold is set to
"infinity" on the PIM SM last hop router, it could remain on the shared
tree and never swicth to SPT. 

My question is: If the RPF'(S,G) == RPF'(*,G) and we are the last hop
router with threshold setting of "infinity" "should" we switch to the
SPT immediately irrespective of the SPT threshold setting?

RFC 4601 Section 4.2 talks about data packet forwarding rules and has
the following algorithm:

On receipt of data from S to G on interface iif:
    if( DirectlyConnected(S) == TRUE AND iif == RPF_interface(S) ) {
         set KeepaliveTimer(S,G) to Keepalive_Period
    }

   if( iif == RPF_interface(S) AND UpstreamJPState(S,G) == Joined AND
      inherited_olist(S,G) != NULL ) {
          set KeepaliveTimer(S,G) to Keepalive_Period
   }

   Update_SPTbit(S,G,iif) <<<<------ (1)
   oiflist = NULL

   if( iif == RPF_interface(S) AND SPTbit(S,G) == TRUE ) {
      oiflist = inherited_olist(S,G)
   } else if( iif == RPF_interface(RP(G)) AND SPTbit(S,G) == FALSE) {
     oiflist = inherited_olist(S,G,rpt)
     CheckSwitchToSpt(S,G) <<<-------------- (2)
   } else {
      if ( SPTbit(S,G) == TRUE AND iif is in inherited_olist(S,G) ) {
         send Assert(S,G) on iif
      } else if ( SPTbit(S,G) == FALSE AND
                  iif is in inherited_olist(S,G,rpt) {
         send Assert(*,G) on iif
      }
   }

The Update_SPTbit appears before CheckSwitchToSpt(S,G) in this algorithm
and CheckSwitchToSpt(S,G) is called only if the SPTbit(S,G) is FALSE. 

As per Section 4.2.2 Setting and Clearing the (S,G) SPTbit:  

Update_SPTbit will set the SPTbit if we have the

   appropriate (S,G) join state, and if the packet arrived on the
   correct upstream interface for S, and if one or more of the following
   conditions applies:

   1.  The source is directly connected, in which case the switch to the
       SPT is a no-op.

   2.  The RPF interface to S is different from the RPF interface to the
       RP.  The packet arrived on RPF_interface(S), and so the SPT must
       have been completed.

   3.  Noone wants the packet on the RP tree.

   4.  RPF'(S,G) == RPF'(*,G).  In this case, the router will never be
       able to tell if the SPT has been completed, so it should just
       switch immediately.

Using (4) the SPTbit should be set in cases where RPF'(S,G) == RPF'(*,G)
and hence CheckSwitchToSpt would not be used to see if the threshold
policy setting is at "infinity". 

Cisco router (IOS 12.4) that we have in our lab does not set the SPT bit
on the entry nor gets the traffic via the SPT when the SPT threshold is
"infinity" when it is deployed in a topology where RPF(S,G) == RPF(*,G).

Is this RFC compliant behaviour? Kindly advise.

Thanks,
Sowmya
Stig Venaas | 16 Mar 21:25 2009
Picon
Picon

Reminder: last call on draft-ietf-pim-sm-linklocal-07 ends March 17th

I haven't seen any responses to this last call. Please if you have
any opinions at all on this draft, please state them by the 17th.

It's hard to judge whether the wg supports this document when there
is total silence.

Stig

Stig Venaas wrote:
> This message announces a pim wg last call on "Authentication and
> Confidentiality in PIM-SM Link-local Messages"
> <draft-ietf-pim-sm-linklocal-07.txt>.
> The last call will conclude at 1700 UTC on Tue, 2009-03-17.
> 
> Please respond to this wg last call.  If you support acceptance of the
> document without change, respond with a simple acknowledgment, so that
> support for the document can be assessed.  Lack of discussion does not
> represent positive support.
> 
> The draft is available at
> http://www.ietf.org/internet-drafts/draft-ietf-pim-sm-linklocal-07.txt
> 
> Stig
> 
> _______________________________________________
> pim mailing list
> pim <at> ietf.org
> https://www.ietf.org/mailman/listinfo/pim
Mike McBride (mmcbride | 19 Mar 07:19 2009
Picon

Remote attendance to pimwg

Please let Stig and I know if you plan to remotely listen into the pimwg
meeting in San Francisco AND if you would like to see the slides. We
could set up the ability to remotely see the presentation slides if
there is interest. It would help to know how many intend to do so.

thanks,
mike
Nikhil Ninan | 19 Mar 10:22 2009
Picon
Picon

Re: Remote attendance to pimwg

Hello there,
           I am based in the University of Aberdeen, UK and my research
interests is on PIM. It would be great if I can see the slides and listen in
at the same time.
Cheers
Nikhil

-----Original Message-----
From: pim-bounces <at> ietf.org [mailto:pim-bounces <at> ietf.org] On Behalf Of Mike
McBride (mmcbride)
Sent: 19 March 2009 06:20
To: pim <at> ietf.org
Subject: [pim] Remote attendance to pimwg

Please let Stig and I know if you plan to remotely listen into the pimwg
meeting in San Francisco AND if you would like to see the slides. We
could set up the ability to remotely see the presentation slides if
there is interest. It would help to know how many intend to do so.

thanks,
mike
_______________________________________________
pim mailing list
pim <at> ietf.org
https://www.ietf.org/mailman/listinfo/pim
Nikhil Ninan | 19 Mar 11:26 2009
Picon
Picon

PIM state machine queries

Hello all,

              I am doing some research work on PIM state machine implementation within a test-bed. I have enabled PIM debug on the RP and source’s DR. Everything seems to be fine but I have a query why the following messages were shown at the RP and source’s DR respectively,

 

At Source’s DR,

                PIM(0): Building Periodic Join/Prune message for 224.10.10.1

At RP,

Building Periodic (*,G) Join / (S,G,RP-bit) Prune message for 224.10.10.1

 

These messages are shown periodically after the initial messages about sending, receiving register and register-stop messages. But I don’t see the two messages mentioned above on the physical interfaces which I am monitoring using PCs. Any info would be great.

Cheers

Nikhil

 

_______________________________________________
pim mailing list
pim <at> ietf.org
https://www.ietf.org/mailman/listinfo/pim
Mike McBride (mmcbride | 23 Mar 21:05 2009
Picon

remote access to pimwg meeting

slides:

Date/Time:  March 24, 2009 at 01:00PM America/Los_Angeles
Length:     120
Meeting ID: 122284709
Go to http://meetingplace.cisco.com/join.asp?122284709
Fill in the My Name is field then click Attend Meeting
- Accept any security warnings you receive and wait for the Meeting Room
to initialize
-If this is your first time attending a Web Conference, disable any
pop-up blockers and visit
http://meetingplace.cisco.com/mpweb/scripts/browsertestupper.asp to test
your web browser for compatibility with the Web Conference.

audio: 

http://tools.ietf.org/agenda/74/

mike
Stig Venaas | 26 Mar 15:57 2009
Picon
Picon

Draft minutes from IETF 74 wg meeting

Draft minutes from the meeting are available at
http://www.ietf.org/proceedings/09mar/minutes/pim.txt

Please let the chairs know if you have any corrections.

Many thanks to Gorry for taking notes,

Stig

Gmane