nanog mailing list archives
Re: Facility wide DR/Continuity
From: Brandon Galbraith <brandon.galbraith () gmail com>
Date: Wed, 3 Jun 2009 12:53:17 -0500
On Wed, Jun 3, 2009 at 12:47 PM, Bill Woodcock <woody () pch net> wrote:
On Wed, 3 Jun 2009, Drew Weaver wrote: > Should the additional sites be connected to the primary site > (and/or the Internet directly)? Yes, because any out-of-band synchronization method between the servers at the production site and the servers at the DR site is likely to be more difficult to manage. You could do UUCP over a serial line, but... > What is the best way to handle the routing? Obviously two devices > cannot occupy the same IP address at the same time, so how do you > provide that instant 'cut-over'? This is one of the only instances in which I like NATs. Set up a NAT between the two sites to do static 1-to-1 mapping of each site into a different range for the other, so that the DR servers have the same IP addresses as their production masters, but have a different IP address to synchronize with.
Or you use RFC1918 address space at each location, and NAT each side between public anycasted space and your private IP space. Prevents internal IP conflicts, having to deal with site to site NAT, etc. -brandon -- Brandon Galbraith Mobile: 630.400.6992 FNAL: 630.840.2141
Current thread:
- Facility wide DR/Continuity Drew Weaver (Jun 03)
- Re: Facility wide DR/Continuity Roland Dobbins (Jun 03)
- RE: Facility wide DR/Continuity Ricky Duman (Jun 03)
- Re: Facility wide DR/Continuity William Herrin (Jun 03)
- Re: Facility wide DR/Continuity Brandon Galbraith (Jun 03)
- Re: Facility wide DR/Continuity Roland Dobbins (Jun 03)
- Re: Facility wide DR/Continuity Stefan (Jun 03)
- Re: Facility wide DR/Continuity Bill Woodcock (Jun 03)
- Re: Facility wide DR/Continuity Brandon Galbraith (Jun 03)
- Re: Facility wide DR/Continuity Roland Dobbins (Jun 03)
- Re: Facility wide DR/Continuity Bill Woodcock (Jun 03)
- Re: Facility wide DR/Continuity Brandon Galbraith (Jun 03)
- <Possible follow-ups>
- RE: Facility wide DR/Continuity gb10hkzo-nanog (Jun 03)
- Re: Facility wide DR/Continuity Jim Wise (Jun 03)
- Re: Facility wide DR/Continuity gb10hkzo-nanog (Jun 03)
- Re: Facility wide DR/Continuity William Herrin (Jun 03)
- Re: Facility wide DR/Continuity gb10hkzo-nanog (Jun 03)
- Re: Facility wide DR/Continuity Roland Dobbins (Jun 03)
- Re: Facility wide DR/Continuity William Herrin (Jun 03)
- Re: Facility wide DR/Continuity Roland Dobbins (Jun 03)
- Re: Facility wide DR/Continuity Jim Wise (Jun 03)