193.in-addr.arpa procedures V1.3
Antonio_Blasco Bonito bonito at nis.garr.it
Mon Mar 29 15:41:44 CEST 1993
> > > bonito at nis.garr.it (Antonio_Blasco Bonito) writes: > * > > * > > * > Folks, > * > > * > One last go. I think we folded in most of the comments from Blaso and othe > * rs. > * > We have included the procedures for single class C reverse zones, not via > * > block zones. > * > > * > We are already doing our first trials with block delegations, all seems to > * > work fine. Please let's get this document accepted and delegate these bloc > * ks. > * > * Sorry for this late comment, but it has come now to my mind: > * I think it would be wise to include recommended values for SOA fields > * (refresh, retry, etc). This could save problems to ns.ripe.net > * when acting as secondary. > > What do you think recommended values are ? I know have for everything in > 193.in-addr.arpa: > > @ IN SOA ns.ripe.net. hostmaster.ripe.net. > ( > 1.20 ; Serial > 14400 ; Refresh 4 hours > 3600 ; Retry 1 hours > 604800 ; Expire 7 days > 518400 ; TTL 6 days > ) > > which in my view is reasonable, since these things (just delegations) do not > change too often. For the actual class C zones, we have for > 45.87.192.in-addr.arpa (RIPE NCC net): > > @ IN SOA ns.ripe.net. hostmaster.ripe.net. > ( > 1.4 ; Serial > 28800 ; Refresh 8 hours > 7200 ; Retry 2 hours > 604800 ; Expire 7 days > 86400 ; Minimum 1 day > ) > > Are these fine to be recommended ? > > -Marten > I think the following could be reasonable values and rules to recommended. Refresh and retry have a direct impact on how much ns.ripe.net will have to do when acting as secondary for delegated 256-Cblocks. Maybe Piet Berteema has something more to say on this subject. ( yymmddv ; Serial 28800 ; Refresh 8 hours 3600 ; Retry 1 hour 604800 ; Expire 7 days 172800 ; Default TTL 2 days ) where yyddmmv is the recommended way to hold the update serial number with yy being the two-digit year number (to become four-digits on year 2000) mm being the two-digit month number dd being the two-digit day number v being a one digit serial number ---------- ---------- Antonio_Blasco Bonito E-Mail: bonito at nis.garr.it GARR - Network Information Service c=it;a=garr;p=garr;o=nis;s=bonito c/o CNUCE - Istituto del CNR Tel: +39 (50) 593246 Via S. Maria, 36 Telex: 500371 CNUCE I 56126 PISA Italy Fax: +39 (50) 904052 ---------- ----------
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