nanog mailing list archives
Re: ISP network design of non-authoritative caches
From: William Allen Simpson <wsimpson () greendragon com>
Date: Sat, 17 Nov 2001 08:46:50 -0500
I've always advocated that at least one caching DNS be located in every POP. In the old days, I designed it right into the NAS router(s). In the original IPv6 Neighbor Discovery, the routers announced the DNS, so that it could be in the router or on a separate device. Then, as commercial NAS's became available without DNS built in, and SIP(P) IPv6 didn't take off, I've tried a "service" style using net 10, but it was hard to manage and explain (at least by our entry level support), so I gave up. Ideally, clients would use DHCP INFORM to find the local POP servers. But none of the clients seem to bother. Nowadays, we just give the customers that statically configure a pair of central site servers (still on separate subnets), and configure the NAS's with the local POP server using the bogus M$ PPP options. That seems to cover our users pretty well. If we could agree on a standard service (sometimes called anycast) set of IP addresses, that might work.... All these techniques should be written up in a BCP. -- William Allen Simpson Key fingerprint = 17 40 5E 67 15 6F 31 26 DD 0D B9 9B 6A 15 2C 32
Current thread:
- ISP network design of non-authoritative caches Sean Donelan (Nov 17)
- Re: ISP network design of non-authoritative caches Bill Woodcock (Nov 17)
- Re: ISP network design of non-authoritative caches Sean Donelan (Nov 17)
- Re: ISP network design of non-authoritative caches William Allen Simpson (Nov 17)
- Re: ISP network design of non-authoritative caches Robert E. Seastrom (Nov 17)
- Re: ISP network design of non-authoritative caches Sean Donelan (Nov 17)
- Re: ISP network design of non-authoritative caches Bill Woodcock (Nov 17)
- Re: ISP network design of non-authoritative caches Randy Bush (Nov 17)
- Re: ISP network design of non-authoritative caches Sean Donelan (Nov 17)
- Re: ISP network design of non-authoritative caches Pat Myrto (Nov 17)
- Re: ISP network design of non-authoritative caches Randy Bush (Nov 18)
- Re: ISP network design of non-authoritative caches John Palmer (NANOG Acct) (Nov 18)
- Re: ISP network design of non-authoritative caches Paul Vixie (Nov 18)
- Re: ISP network design of non-authoritative caches measl (Nov 18)
- Re: ISP network design of non-authoritative caches Andy Walden (Nov 18)
- Re: ISP network design of non-authoritative caches Paul A Vixie (Nov 18)
- Re: ISP network design of non-authoritative caches Sean Donelan (Nov 17)