--- 1/draft-ietf-ospf-segment-routing-msd-19.txt	2018-08-31 15:13:43.400336628 -0700
+++ 2/draft-ietf-ospf-segment-routing-msd-20.txt	2018-08-31 15:13:43.424337213 -0700
@@ -3,21 +3,21 @@
 Internet-Draft                                            Nuage Networks
 Intended status: Standards Track                             U. Chunduri
 Expires: March 4, 2019                               Huawei Technologies
                                                                S. Aldrin
                                                              Google, Inc
                                                                P. Psenak
                                                            Cisco Systems
                                                          August 31, 2018
 
               Signaling MSD (Maximum SID Depth) using OSPF
-                 draft-ietf-ospf-segment-routing-msd-19
+                 draft-ietf-ospf-segment-routing-msd-20
 
 Abstract
 
    This document defines a way for an Open Shortest Path First (OSPF)
    Router to advertise multiple types of supported Maximum SID Depths
    (MSDs) at node and/or link granularity.  Such advertisements allow
    entities (e.g., centralized controllers) to determine whether a
    particular SID stack can be supported in a given network.  This
    document defines only one type of MSD, but defines an encoding that
    can support other MSD types.  Here the term OSPF means both OSPFv2
@@ -243,21 +243,21 @@
 
    If this sub-TLV is advertised multiple times in the same OSPFv2
    Extended Link Opaque LSA/E-Router-LSA, only the first instance of the
    TLV MUST be used by receiving OSPF routers.  This situation SHOULD be
    logged as an error.
 
    If this sub-TLV is advertised multiple times for the same link in
    different OSPF Extended Link Opaque LSAs/E-Router-LSAs originated by
    the same OSPF router, the OSPFv2 Extended Link TLV in the OSPFv2
    Extended Link Opaque LSA with the smallest Opaque ID or in the OSPFv3
-   E-Router-LSA with the smallest Link State ID MUSR be used by
+   E-Router-LSA with the smallest Link State ID MUST be used by
    receiving OSPF routers.  This situation MAY be logged as a warning.
 
 4.  Using Node and Link MSD Advertisements
 
    When Link MSD is present for a given MSD type, the value of the Link
    MSD MUST take preference over the Node MSD.  When a Link MSD type is
    not signalled but the Node MSD type is, then the value of that Node
    MSD type MUST be considered as the corresponding Link MSD type value.
    In order to increase flooding efficiency, it is RECOMMENDED, that
    routers with homogenous Link MSD values advertise just the Node MSD