![nanog logo](/images/nanog-logo.png)
nanog mailing list archives
Intradomain DNS Anycast revisited
From: Joe Shen <joe_hznm () yahoo com sg>
Date: Fri, 25 Mar 2005 12:49:56 +0800 (CST)
Hi, I'm trying to set up a anycast DNS server farm for customer service. In order to improve availability, we plan to install those servers in one LAN which has the similar structure like : server-(1,3)---switch1---router-1---(outside) | | server-(2,4)---switch2---router-2---(outside) The four unix servers are all unix boxes, switch-1 & switch-2 are interconnected to guarantee the availability. BIND is to be used as DNS cache server software, Quagga OSPFD is used to be routing software. According to above configuration, both routers will know multiple paths to dns cache server, while dns cache server should know two paths to outside network. Here comes my questions: 1) should each dns cache server be configured a static default route (0.0.0.0/0.0.0.0)? If server-(1,3) is configured statically to use router-1 as default router, will Quagga make it use router-2 when router-1 is not reachable? 2) If each server is configured two default router ( router-1 & router-2), or each server learn route 0.0.0.0/0.0.0.0 by OSPF ( our border router inject default route into OSPF ); there should be two equal cost path to 0.0.0.0/0.0.0.0 on each DNS server, the DNS server should disperse any outgoing packets onto the two paths, will that do harm to DNS service ? 3) Is there any requirement on BIND to fit to such multipath routing situation? Joe __________________________________________________ Do You Yahoo!? Log on to Messenger with your mobile phone! http://sg.messenger.yahoo.com
Current thread:
- Intradomain DNS Anycast revisited Joe Shen (Mar 24)
- Re: Intradomain DNS Anycast revisited Bill Woodcock (Mar 24)
- Re: Intradomain DNS Anycast revisited Alexander Koch (Mar 26)
- MARP (was Re: Intradomain DNS Anycast revisited) Mikael Abrahamsson (Mar 26)
- Re: Intradomain DNS Anycast revisited Bill Woodcock (Mar 28)
- Re: Intradomain DNS Anycast revisited Peter John Hill (Mar 28)
- Re: Intradomain DNS Anycast revisited Alexander Koch (Mar 26)
- Re: Intradomain DNS Anycast revisited Bill Woodcock (Mar 24)
- Re: Intradomain DNS Anycast revisited just me (Mar 26)
- Re: Intradomain DNS Anycast revisited Peter John Hill (Mar 27)
- Re: Intradomain DNS Anycast revisited Edward B. Dreger (Mar 27)
- Re: Intradomain DNS Anycast revisited Peter John Hill (Mar 27)
- <Possible follow-ups>
- Re: Intradomain DNS Anycast revisited Joe Shen (Mar 24)
- Re: Intradomain DNS Anycast revisited Bill Woodcock (Mar 30)