Re: [Softwires] Working group last call for draft-ietf-softwire-map-dhcp-07

[Ole Troan <[e-mail]>]

Ian,

thanks!

> [ian] Couple of changes to 4.5:
> 
> Old:
> The Port Parameters Option specifies optional Rule Port Parameters
>   that MAY be provided as part of the Mapping Rule for CEs using the
>   MAP algorithm.
> New:
> The Port Parameters Option specifies optional Port Set information
>   that MAY be provided to CEs.

that looks fine.

> Old:
> When receiving the Port Parameters option with an explicit PSID, the
>   client MUST use this explicit PSID in configuring its MAP interface.
>   If the conveyed IPv4 address is not 32 bit-long, the option MUST be
>   discarded.  The formula for this check is "prefix4-len + ea-len = 32"
>   and serves to ensure that the explicit PSID is only applied to
>   configurations with a completely formed IPv4 address.
> New:
> On receipt of the Port Parameters option with an explicit PSID, clients
>   MUST configure their softwire interface with the received
>   explicit PSID. For MAP-E and MAP-T clients, if the conveyed IPv4 address
>   is not 32 bits-long, the option MUST be discarded.  The formula for 
>   this check is "prefix4-len + ea-len = 32" and serves to ensure that 
>   the explicit PSID is only applied to configurations with a completely
>   formed IPv4 address.

what about keeping the old text with your change of s/MAP interface/softwire interface/.
at least in theory LW46 could support IPv4 prefixes, or a new mechanism could come along that did.

> [ian]
> What about the following wording change: 
> Old:Allowed values are between 0 and 15, with the default value being 6.
> New:
> Allowed values are between 0 and 15. Default values for this field are specific to the softwire mechanism being implemented and  are defined in the relevant specification document. 

that looks fine. updated.

> Good spot on the WKP exclusion. Before the lw4o6 draft was updated to reference map-dhcp for configuration,  the port configuration was described in sun-dhc-port-set-option, which also stated that the WKPs should not be assigned. This advice got lost when changing to reference map-dhcp. I’ll make a suggested text update for the lw4o6 draft to fix this. Does that work for you?

yes, that would be good.

cheers,
Ole