Telechat Review of draft-kompella-l2vpn-l2vpn-

Request Review of draft-kompella-l2vpn-l2vpn
Requested rev. no specific revision (document currently at 10)
Type Telechat Review
Team General Area Review Team (Gen-ART) (genart)
Deadline 2012-01-17
Requested 2012-01-13
Authors Kireeti Kompella, Bhupesh Kothari, Rao Cherukuri
Draft last updated 2012-01-13
Completed reviews Genart Telechat review of -?? by Roni Even
Genart Telechat review of -?? by Roni Even
Assignment Reviewer Roni Even
State Completed
Review review-kompella-l2vpn-l2vpn-genart-telechat-even-2012-01-13-2
Review completed: 2012-01-13


I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at <>.

Please resolve these comments along with any other Last Call comments you may receive.



Reviewer: Roni Even

Review Date: 2011–9–7

IETF LC End Date: 2011–9–27

IESG Telechat date: 


Summary: This draft is not ready for publication as an informational RFC.  


Major issues:


The IANA considerations section says:

“the values  already allocated are in Table 1 of Section 4.  The allocation policy  for new entries up to and including value 127 is "Standards Action".  The allocation policy for values 128 through 251 is "First Come First Served".  The values from 252 through 255 are for "Experimental Use".” 


Yet this is document is intended for Informational status which contradict the standard action. This is also true for the second registry defined.


Is this document really an Informational one?


Minor issues:




In section  1.2.2 “

Since "traditional" Layer 2 VPNs (i.e., real Frame Relay circuits connecting sites) are indistinguishable from tunnel-based VPNs from  the customer's point-of-view, migrating from one to the other raises  few issues.” What are the few issues?



In section 4 

“L2VPN TLVs can be added to extend the information carried in the NLRI, using the format shown in Figure 2”. How is the TLV carried in the NLRI, in which field, section 4.1 only talk about the structure of the TLV. 



Section 4.2 refers to section 4 but I am not sure where this mechanism in section 4 is.







Nits/editorial comments:  




Section 3.1 is called network topology but the whole text is an example of a network topology. Maybe the title should be “Example of a network toplogy”.



Section 5 starts with “As defined so far in the document ….” But the using IP only is already discussed in previous sections.