Dear all,




Season’s greetings!




 




I have reviewed this document as part of the operations directorate's





ongoing effort to review all IETF documents being processed by the





IESG.  These comments were written primarily for the benefit of the





operations area directors.  Document editors and WG chairs should treat





these comments just like any other last call comments.




 




Basically it is an informational guidance on how to connect trill RBridges using PW without changing TRILL and PW specifications. You may want to take the following
 reviews into consideration.




 




1. Section 2.1:




The sending pseudowire TRILL Switch port MUST copy the priority of





the TRILL Data packets being sent to the 3-bit Traffic Class field of





the pseudowire label…




I think priority here refers to priority code in outer.VLAN.  Better clarify it.




 




2. Page 4 right above section 2.1, it says, “This application needs no additions  to the existing pseudowire standards”. PPP PW in section 2.2 does not require
 any change to current RFCs for TRILL or PW.




However the appendix says it may not be true for the other types of PW.




So I suggest to give a brief explanation. For PW type other than 0x0007, it may require some changes otherwise may not be directly applicable, e.g. for type
 0x0004. Then the readers may refer to the appendix.




 




Nit: last paragraph in Section 2, sentence fragment:




 




OLD




 




    A pseudowire is carried over a packet switched network tunnel




    [RFC3985].  For example, an MPLS or MPLS-TP label switched path




    tunnel in MPLS networks.




 




NEW




 




    A pseudowire is carried over a packet switched network tunnel




    [RFC3985], for example, an MPLS or MPLS-TP label switched path




    tunnel in MPLS networks.




 




Nit: second last paragraph of Sec. 2.1, unnecessary use of abbreviation (which otherwise would have to be spelled out on first use anyway):




 




OLD




 




... constraint on the TRILL campus wide Sz ...




 




NEW




 




... constraint on the TRILL campus wide MTU size ...




 




OLD




 




... MUST be used in helping to determine Sz ...




 




NEW




 




... MUST be used in helping to determine MTU size ...




 




 




Thank you,




Tina