Re: MPLS OAM & the IETF

[Yutaka SAKAI <sakai@lab.jrc.co.jp>]

i am not expert but...
If trend of communication move more ip-centric, 
*ip-based* #2a is more better.
but i feel that ITU-T considers #1 or #3 (both well 
cared for legacy) as far as i heard about abstract 
report from last SG13 attendees.
 if something is wrong, please correct me.

below figures are my current poor understandings.

#0 starting point
-------------------------------------------------
telco's OAM stack           IETF tools
(mainly ITU-T)              ping, tracert etc

                 |  upper  |
                 |---------|
                 |         |
                 |  MPLS   |
                 |         |
                 |---------|
                 |  lower  |


#1 split the tasks
-------------------------------------------------
telco's OAM stack           IETF tools

                 |  upper  |
      +----------+---------|
      |          |         |
      | MPLS OAM |  MPLS   |
      |  ITU-T?  |  IETF?  |
      +----------+---------|
                 |  lower  |

issue:
 How to split ?
 Does ITU-T want *all* OAM ?


#2a produce common
-------------------------------------------------
******* *** *****           **** *****

                 |  upper  |
                 |---------+----------+
                 |         |  common  |
                 |  MPLS   | MPLS OAM |
                 |         | ITU&IETF |
                 |---------+----------+
                 |  lower  |

issue:
 Which does it stand up for non-ip-centric or ip-centric ?


#2b compete
-------------------------------------------------
telco's OAM stack           IETF tools

                 |  upper  |
      +  --  --  +---------+  --  --  +
                 |         |           
      | MPLS OAM |  MPLS   | MPLS OAM |
         ITU-T   |         |   IETF    
      +  --  --  +---------+  --  --  +
                 |  lower  |

issue:
 Are there more two ways ?
 #2b-1 at last, select only one  or
 #2b-2 fight forever (=not same as #3)


#3 split & dual adhoc (by Mina Azad)
-------------------------------------------------
telco's OAM stack           IETF tools

                 |  upper  |
      +----------+---------+----------+
      | non-ip.. |         | ip-based |
      | MPLS OAM |  MPLS   | MPLS OAM |
      |  ITU-T   |         |   IETF   |
      +----------+---------+----------+
                 |  lower  |

issue:
 Do we want to swim in muddy waters ?
 #3-2 for non-ip-centric by ITU  and
 #3-3 for ip-centric by IETF



regards,
Yutaka