Re: draft-ietf-ospf-iana-00

[Kireeti Kompella <kireeti at JUNIPER.NET>]

On Tue, 5 Apr 2005, John Flick wrote:

> Actually, this information is true for ISO ASN.1, but not for SNMP.
> SNMP's SMI is an "adapted subset" of ASN.1.  That subset is defined
> in RFCs 2578-2580.

You live and learn how little you really know!

>  From RFC 2578, section 3.5:
>
>     An OBJECT IDENTIFIER value is an ordered list of non-negative
>     numbers.  For the SMIv2, each number in the list is referred to as a
>     sub-identifier, there are at most 128 sub-identifiers in a value, and
>     each sub-identifier has a maximum value of 232-1 (4294967295
>     decimal).

Can we now start a thread on whether an OID length of 128 is too
small?  :-)

> I don't believe we have run into any problems with these limits in
> SNMP :-) .
>
> So, I don't believe that draft-ietf-ospf-iana draft has a problem here.

Whew!  For a while there, I was worried that we would need 2^128
enterprise codes (and 2^128 enterprises to use them!)  :-)

Kireeti.
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