snmp community mib

Hello SNMPv3 Working Group,=20

I am working with Cable Modem devices and want to send an snmp SET to upd=
ate
the read-only and write community strings. I need to index into the
snmpCommunityTable. Based on the CMTSs that I can browse, the
snmpCommunityIndex is not available, but the instance is a dot separated
ascii equivalent of a word, possibly the name of the view. Is this the ca=
se?

If indeed the snmpCommunityEntry can be indexed using the ascii index, ho=
w
do I
a) know which row contains the read-only community string, and which
contains the write commnuity string?
b) know the ascii index in the first place?

Thank you for taking the time to read this email. I appreciate any help y=
ou
can give me.
If this is not the best forum for such a question, please advise me of a
more suitable one.
Gr=E1inne