Thanks for the reply- I'm following you. We need traffic to be down no longer than an hour. So should i work with the ISPs to clarify the details and/or is there any particular references that depict this type of scenario? What about other alternatives for ensuring that the traffic would failover? Any other resources you could point me to?
appreciate your time.byron ----- Original Message ----- From: "Chris White" To: Sent: Tuesday, November 13, 2001 4:57 PM Subject: Re: Discussion of BGP related to a DR solution [7:26147] > Yes and no... > > If you plan to announce addresses from DC1 (provider 1) through > DC2 (provider 2) in the case of a failure/loss of DC1 you could > run into reachability issues. Some providers filter on allocation > boundries so the /24 announcements will probably not be globally > reachable. How severly this impacts you will depend on the function > of the datacenter.... > > > On Tue, 13 Nov 2001, Byron wrote: > > > Interested in feedback on using BGP as a Disaster Recovery and/or Load > > Balancing solution: > > > > BACKGROUND > > Currently, we have one production datacenter (COLO) (DC1) with 2 100MB > feeds > > to redundant 7200s, 2 ip class C blocks (say 1.1.1.x and 2.2.2.x) one > behind > > each 7200. this is a Cisco failover setup with all Cisco gear - mirrored > > 6509s., local directors, PIXs, etc). primary and secondary DNS are behind > > 7200 and a firewall on a DMZ. Third dns server is at separate corp site > > (CORP) on DMZ which is connected via backend T1 on another VLAN... way > > behind the 7200s. > > > > Anyway, to the fun part: > > > > OBJECTIVE: > > Goal is to bring up a disaster recovery data-center (DC2) (another > > location/provider) where by we could route traffic to this new site should > > production site go down (within an hour). It doesn't have to be utilized > > normally for complete loadbalancing, as it won't have all the hardware, > > redundancy, etc. that DC1 has. This site would have its own class C block > > (say 3.3.3.x) allocated from this new hosting center/ISP with backend T1 to > > corp and perhaps a backend T1 to product DC1 for incremental DB > > replication/administration, etc. > > > > Still trying to finish my CCNP, I'm a relative newbie with BGP, however > > based on my understanding we were thinking that BGP would help solve this > > problem by creating one AS comprised of the IP blocks at both locations > (1&2 > > from DC1 and 3 from DC2). We could inject weighted static routes into each > > ISPs AS respectively and if the primary site failed traffic on the internet > > destined for both 1.1.1.x and 2.2.2.x would be routed over to DC2. I > realize > > that there are many more details regarding the BGP setup but I'm trying to > > narrow down the functional - high level architecture to communicate > > internally for project approval. Is that a correct understanding? That is, > > can BGP function this way? I'm wondering if anyone else out there is doing > > this and can speak to whether (or not) BGP can help us out. > > > > Appreciate anyone's ideas or feedback- > > Byron > > > > > > > > > > _________________________________________________________ > > Do You Yahoo!? > > Get your free @yahoo.com address at http://mail.yahoo.com _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26416&t=26147 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
