draft-ietf-spring-sr-yang seems to describe Maximum SID Depth (MSD) as a read-write attribute that is configurable on the node, but I really wonder how many vendors actually support changing the MSD on a node.
Suppose a node is capable of pushing a maximum of K labels in h/w and the node MSD is configured as K, then a SR-TE tunnel on the node can specify up to K SIDs. This means the node will not be able to push a VPN label, so cannot do L3VPN/L2VPN. Given that a miss-configuration like would result in service failure, is there a real motivation for changing MSD on a node? Should MSD be a node capability instead, like the 'readable-label-stack-depth' defined in the yang draft? Regards, Muthu
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