Re: about Selecter Parameter

[Stephen Kent <kent@bbn.com>]

Makoto,

>In RFC2401;
>>
>>    4.4.2  Selectors
>>      .....
>>      - Destination IP Address (IPv4 or IPv6): this may be a single IP
>>        address (unicast, anycast, broadcast (IPv4 only), or multicast
>>        group), a range of addresses (high and low values (inclusive),
>>        address + mask, or a wildcard address.  The last three are used
>>      .....
>>        transport'd packet, there will be only one IP header and this
>>        ambiguity does not exist.  [REQUIRED for all implementations]
>
>Is this sentence saying,
>when implementing SPD, the implementor Must support *ALL* parameters
>setting below for dest-IP ?
> - single IP
> - multicast
> - a range of addresses (high and low values
> - address + mask
> - a wildcard address
>
>or,
>are these only candidate of dest-IP setting and whole parameter's support
>being not mandatory?


It is mandatory (REQUIRED) for an implementation to support ALL of these
parameter types, to facilitate interoperability.

Steve

---

References:

• about Selecter Parameter
• From: Makoto Kubota <kubota@flab.fujitsu.co.jp>

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