Redundant Router Setup

Jun 5, 2007

I'm in the process to setup a new service with an ISP with the following scenario and need your help.

I've got the rack (42U), servers and switches. Only routers has been left and here is that I need your help.

I have also 2 ports from the ISP where I can connect my routers. I need to get 2 router devices with auto sync feature in order to be able to setup a redundant plan in case that one of them goes down.

Those routers should have firewall features too in order to avoid setup iptables rules for each server. A basic DDoS protection is needed too.

I'm going to push around 100Mbit of traffic across the servers but that will happen after 3-4 months from the initial setup. In the first instance no more than 10-20Mbit will be used.

I heard a lot about Cisco but got no idea what model is the most suitable for my case. I will probably need a module for DDoS attacks and another one for advanced security IOS from what I read but it is not clear to me.

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Looking For Redundant Setup, Round Robin?

Nov 5, 2008

Looking for redundant setup, round robin?

I'm looking to make high availability setup, and wondering how many of you have made it so?
we are looking to multi-home the page with a round robin setup, using multiple VPSs/dedicated servers geographically different locations.

Right now i'm still looking at "stale" DNS setup, no automanagement of servers down. Is there a service/software which already offers automatic changes of zones for removing servers which are down, and adding them back when they get back online?

Do i need to custom tailor everything?

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How To Setup A Redundant Server For A Domain Name To Reduce Downtimes

Oct 29, 2008

I have registered a domain using godaddy. I have hosted my site on a server of my shared hosting provider(lets call them X).Currently I have pointed mydomain.com to the server and it is up and running.Sometimes, I have experienced downtimes.

In order to solve this problem, I have hosted a clone of my site on another server from another hosting company(lets call them Y).

1. I want mydomain.com to point to Y when X is down

2. again point it to X when it is up.

My main aim is to have my site live with less downtime. The probability having both servers down is very less.

I dont know if it is technically feasible, just a thought out of dirty mind. I tried to google but was not able to find an answer specific to my problem.

Can anybody tell me how to achieve this through godaddy domain.

Added note, My site is not a commercial site and I cant afford large dedicated servers with clustering and failovers.

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Cisco IOS Router Vs. ASA Firewall For Small Colo-racked Setup

May 3, 2008

I am in the process of gathering the peices to move from a dedicated box to my own hardware in a local colo and am undecided how best to choose the edge device.

The colo has a 30Mb pipe with about 10Mb of it being constantly used during biz hours. Another 10Mb is being allocated in the next couple of months. I want to be able to burst to the full 30Mb when needed.

I am getting 12 IP's allocated but will increase to 24 soon if all goes well (fingers crossed!).

I will have for starters just a single Proliant running dnp on 2008 with IIS, FTP, Mail, ns1 and a 2003 VM running my secondary ns.

What I am unsure of is the edge device and looking for others that have used either a 2800 series router or a ASA5500 series firewall in a similiar fashion. I know what the raw throughput of each device is, but raw benchmarks are not realworld numbers by any means.

I am looking at the 2801 with IOS Firewall turned on and hopefully even some inspects for FTP and HTTP traffic. The other option and one that I am less familiar with is to use the ASA5505 instead which will do my basic routing but supposedly provide more thourough inspects and advanced rules.

Does anyone have experiance with either of these in a hosting environment and have input on the realistic throughput one can expect from either device?

There is a signifigant cost difference with the ASA5505 being much cheaper but I am more familiar with IOS. Would anyone recommend a 1841 router instead?

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Redundant DNS

Oct 6, 2009

I have been working on and designing a hosting company. Now setting up my names servers has came to a question. When I ran a previous business with a partner he only use Name Servers on 1 Machine in 1 location.

Now my question is my first server is going to be located in New Jersey, USA . So that is where My first set of DNS starts. With my previous partner I noticed most of the customers were based in Europe, Philippines, etc. Over seas. Now What I am asking is Will a VPS in a different location work for DNS Server. That way I can keep a lower budget till we get a few customers under out belt.

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Redundant DNS Servers? How Do You Set Them Up

Apr 8, 2009

Because of the attack on theplanet yesterday, my sites were down.

People are mentioning adding "redundant DNS servers" to protect against downtime in future attacks.. but I haven't found any info on how to set these up.

I also seen somebody post that the planet doesn't allow "zone transfers" so I'm a bit confused at how to proceed.

I just registered an account at [url] and I'm unsure on where to begin. Their FAQ is just a large photo.

My .com is registered at Godaddy. Do I edit records at godaddy to point to the server IP? Or do I have to edit records via WHM?

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Redundant Hosting ....

Aug 13, 2009

I currently run spiderloop.com a SEO control panel designed for windows hosting accounts. The site and web service is hosted on our own server and works great, however I am concerned about redundancy and do not want to purchase a whole other server just to be fail safe. So I am going to purchase a shared hosting account to facilitate redundancy.

So here is the question.

How do I do it? How do I set up my current host to redirect to the new host when it goes down?

If the current host has problems how can I force the users browser to redirect to the redundant host? I simply don't understand.

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Is My Host Redundant

May 28, 2008

I have a renewal bill for my hosting account, but I can't see if I have any domains in it and therefore not sure if I should cancel it or not. I am with bright-byte.

Can I do a domain tools reverse search or something on the domain so it can tell me which of my domains are with that host?

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Redundant Config

Mar 18, 2007

I've decided to move from managed hosting to colocated hosting and I'm in a bit over my head as far designing the server configuration goes. I'm looking for assistance with setting up a fully redundant configuration with no SPOF (single point of failure).

The colo provider ensures full redundancy to the cabinet, terminating with two network drops from diverse bandwidth providers and HSRP. I need to eliminate all SPOFs inside the cabinet.

Some questions...

1) I'm thinking of using the Cisco 2960 Series switch as the in-cabinet distribution switch. I believe it supports HSRP. From my understanding, the switch will automatically failover from one uplink to the other in case of a network problem on one of the uplinks, and this will all be transparent to any servers connected to the switch. Is this correct?

2) However, this introduces the switch as SPOF. So, I believe what I need to do is ask the colo for a second pair of network drops and deploy a pair of 2960's. Then I would connect each server to both switches via separate NICs. Is this correct?

3) Finally, assuming I am on the right track here, I would like this to all be transparent and automatic with no human intervention required to recover from a switch failure. The servers will be running RHEL 4. How would I configure the network interfaces on the servers so that they can transparently use either (or both) of the switches? Is there some way to assign the same IP address to more than one interface? How does the OS keep from getting confused about where to send the traffic?

Thanks in advance for any insight. I would also be happy to hear recommendations for excellent network consultants that I could hire to design and implement this configuration for me.

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Redundant Server

Sep 15, 2007

I have two servers. One hosts about 55 small sites and the other does nothing.

Can I make use of the spare one to take over automatically if the main server fails for whatever reason?

I had been thinking of using Rsync to backup accounts / mail every 6 hours or so and then manually changing the nameservers on the domains in the event of server1 failing. Would that even work? Then I got thinking about it all being automatic.

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Redundant VPS Solution

Apr 14, 2007

I have a few VPS's, the main one has cPanel/WHM and runs all my sites / email / DNS and MySQL DB's. Heres a little info:

VPS1 - CentOS 4.4, cPanel/WHM, runs all domains (OpenVZ)
VPS2 - CentOS 4.4, Webmin, Slave DNS to VPS1 using Webmin cluster (OpenVZ)
VPS3 - CentOS 4.4, Webmin, Slave DNS to VPS1 using Webmin cluster (Xen)

However, if VPS1 fails for say 24 hours, im screwed!

So, my question is can I get some kind of redunadancy built in somewhere. For example if someone is trying to access my domain "mydomain.com" and the main VPS is down, then the request for the site would go to VPS2, or VPS3...

The same for the mail server, if some is sending mail to one of the domains on the VPS, and the main VPS was down, the mail would be sent to my other VPS's.

I just don not like the fact there is a single point of failure!

I do have WHM managed Weekly and Monthly backups of all cPanel accounts etc.

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Redundant EMail Service

Jun 11, 2009

We are a hosting company in Colombia, and we want start selling corporate email service.

The main idea is have two servers with redundance, I think this servers have to share the filesystem I don't know if using a scsi disk or just a network file system. We also want to have a good appliance for stop the SPAM, Im not so sure if we need to have redundance on it, its ideal but we are just starting the bussines and we dosn't have cliets yet.

Can anyone share their setup with us, and give us recomendations or tips?

Another option is, if someone know how to do that and have implemented this setup before and want to work $$ with us to implement that, please contact me to jbravo[at]colombiahosting.com.co

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Aug 29, 2007

to setup a Windows server that can support the failure of the switch that comes before it in the network diagram. The idea would be that if the 15A circuit the switch was on failed, or the switch just died, the server would still be online.

I already have two switches in spanning tree just before the server. Is there a way to assign a single IP to the server on both its network cards and connect each card to a different (spanning tree'd) switch?

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Redundant Power Supply

Jul 30, 2007

I'm upgrading my server again and now that we have 8 disks we need to upgrade our power supply (I was told).

But do I really need a redundant power supply Or can I just buy ONE 650 watt to upgrade?

These are my current server specs:

Quote:

2 X AMD opteron 270 dual core
2 X 2 GB kingston PC3200 DDR ram
2 X 1 GB kingston PC3200 DDR ram
(6 GB total)
8 X seagate cheetah 15k.5 SCSI 73.4 GB, U320, SCA in raid 10
1 X LSI megaraid 320-2x raid controller, dual channel
1 X Tyan thunder 8KSE (s2892) mobo
1 X 2 * 4 port chenbro scsi backplane (8 ports total)
2 X AMD CPU cooler
2 X 40X40X10 fans
(Currently 1 X zippy P2G-6510P, 2U, single power supply, 510 Watt)
1 X Sony FDD 1.44"
1 X chenbro RM311, 3U case with 8 hot swap bays
1 X LG DVD/CD-rom burner

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Mirror/Mirroring/backup/redundant

Jan 10, 2008

I have a DB server, running mysql 64bit. I would like to add another server to the mix to build some kind of redundancy if the 1st one were to go down.

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Redundant Apache (failover System)

Sep 22, 2009

I currently own several servers: let's say sites on 3 of those servers rely on a website that sits on server 4

If server 4 goes offline, then servers 1 2 and 3 suffer a lack of usability.
The website on server 4 is very small and fast, but receives several hundred thousand visits a day

I figured it would be a good idea to replicate that website on each of my servers, but I'm unsure about how to set up a good redundancy system..

Using several nameservers doesn't work as expected (visitors are randomly sent to one of the nameservers, in no particular order)

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Does Anyone Exceed 80% On Primary/redundant Circuits

Oct 18, 2009

So the rule of thumb is if you have a 30A circuit to not exceed 80% or 24A.

If I buy a 30A circuit, I am assuming it is protected by a circuit breaker that is 30A, correct?

In *theory* we could run 29-30A all day and be fine.

So, I understand, the rule of 80% to be to the effect that "during startup, equipment uses more power ... or during runtime if it heats up, the fans go faster using more power" so it is safe to be at 24A in case you get spikes to 27-29A.

Is my reasoning correct?

Further, if you run primary/redundant circuits, is there really harm in running 13A on one circuit and 14A on the other.. and in the unlikely event of a failure, you are running 27A on one circuit (at 90% instead of 80%).

Any thoughts on this? Getting an extra 3A out of a 208V circuits is like putting in 3-4 more servers. If someone is doing this please let me know. I think it would work fine but i would like to know from the experts that do the colo stuff for a living what problems i could encounter, if any.

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Lightspeed Host With Redundant Servers

Sep 29, 2009

Who are the reputed hosts in the market that comes with "Lightspeed Host with Redundant Servers"?

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Redundant Dns, Backup Mail Server

Apr 15, 2008

We have 2 linux servers with plesk. We want Redundant Dns and backup mail servers for our hosting domains. We already setup Primary nameserver ip address is first server, Sec Nameserver ip address is second Server. like

ns.ourdomain.com - first server ip address
ns1.ourdomain.com - Second server IP Address

and how can setup backup mail server for both servers

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Setting Up Redundant Mirror/Mirroring Server

Jul 7, 2009

I have a LAMP server running and would like to have the exact mirror running on another location. I would like to sync the web files and database in either real time (upon any update) or in delayed mode (x minutes after the update).

For MySQL, I believe replication can do the job unless anybody has better recommendation. What would you guys suggest for web files? Can I use different Linux flavor but maintain back the same LAMP version?

Is there any "online" 3rd party load balancing service that I could use to load balance the traffic to both servers?

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Dell 1750 Redundant Power Supply + 1u 1outlet Colo

May 15, 2007

a dell 1750 with redundant power supply that has two plugs on the back.

But...

Looking at 1U colo with only one plug available for the 1U price.

Is the only solution to use only one of the two power supplies in the Dell 1750...?

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Router DS3 And OC3?

Feb 18, 2008

What routers would you recommend that is capable of doing BGP routing between multiple DS3, OC3's and Gig-E interfaces?

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Router

May 26, 2007

I am having a big question which has been often asked, but which all the time depends on the network topology; so first let's be honnest :

- I have no experience with BGP / OSPF
- I have no experience with routers (except SOHO models
- I will not have to make this to work in a productive environment

So in the next month we will get an AS number and few IP addresses; the goal is to test drive a gigabit network before using it as productive network;

I would like to ask some advices here for early all aspecsts, let's show some important points :

- Which brand?
- Which model?
- Maybe refurbished?

The key points for me:

I am looking for a cheap chasis but extensible with time when it will be needed

- Extensible system
- Very cheap for small use (at beginning maximum $ 2-3k)
- Trafic rate : ~ 100 MBit/s to 4-5 GBit/s
- Type of trafic : HTML / JPG / GIF / PNG / CSS / EXE / ZIP (shared hosting network)

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Router

Feb 21, 2007

getting my own AS number, but this seems to require also a router. I dont really have a strong knowledge of routing, just basic knowledge.

As I think I understood, I have two possibilities for routing, to buy a ready-made router (Cisco, Juniper, Nortel,) or to simply setup a simple box with Linux or BSD OS, some NIC and use a software such as Zebra, Quagga, etc

So my question is :

- Is it possible to use for professional purposes a BSD box with Zebra ?
- What is entry price for a good Cisco router (approximately) ?
- Does BASIC routing setup requires a very strong knowledge ?

In case this would became concrete soon, people answering could maybe get some paid work doing this for us.

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IP And Router

Jan 10, 2007

I regiested a IP address from one company and I can post my website on internet. that company give me an IP address someting like: 167.23.42.100. Right now My internet speed is very slow, I want to reset my router. If I reset my router, router will produce a new IP address, Does this IP address is same as 167.23.42.100. IF i reset router, do i need to change my website address. I am worry that resetting router will affect my website address(domin name).

Maybe router IP is different as doman name. so I don't need to worry about

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May 17, 2009

I am looking for a good router which will handle two separate WAN connections and bridge them together. Basically, we have DSL at our office (1.5mbps down / 769kbps up), its the only service we can get, cable is not offered, and a T1 inst fast enough and costs too much. We require a faster connection, doing Skype, VPN connections to servers, desktop sharing etc.

Basically we want to order another DSL line 1.5mbps down / 768 kbps up and join it together with our current DSL connection for a total of 3mbps down/1.5mbps up.

Just want to make sure this is possible and if you guys can recommend a router brand and model. To clerify, we don't just want redunacy/fail over, we need to utilize both DSL connections at the same, as if they were one.

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Colo In USA For VPN Router

Oct 18, 2009

I need 1U of space, .5 amp (50 watts) power, one IP, 2.5mbps bidirectional bandwidth (total of 5mbps up + down) and about 10GB of traffic per day each direction (total of 20GB up + down). Would be nice if they have remote KVM along with console (serial) access. Location should be anywhere in USA.

Purpose is to host a VPN router for various remote locations to connect in to. Reliability and good connection (low latency) is important.

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May 19, 2009

We are looking for a good multiple WAN router for our office. We just ordered two DSL 3.0mbps down / 768kbps up lines.

Here are the requirements:

--> Under $500

--> 2 WAN Load Balanced And Fail Over Support

--> Smart enough to handle special session state traffic. Example, if you start a HTTPS session on one DSL line it has to stay on that line. If you start an FTP session connection on one line it has to stay on that line.

--> VPN Tunnel Site-To-Site Support, Only need a max of 1 site-to-site tunnel, but nice to have more just in case.

--> Standard SPI Firewall With Port Forwarding

--> Reserve LAN Static IP's

--> Firewall throughput of at least 10mbps

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Feb 13, 2008

We have a small hosting company (currently 24 racks) that we are expanding to hold 100 racks. We have several 3640 series routers behind a 7200 series router (our edge router) that feed into numerous 2950 switches and 515 & 525 pix firewalls then into the racks with customer supplied switches within the rack. I want to replace all the 3640 and 2950 switches with a 6500 series switch. The only routing we do within the 3640's is subnet routing to the switches which make up individual networks for each customer. My goal is to use the 6500 switch to limit bandwidth for each port feeding a customer and to eliminate all but the 7200 router and the 2950 switches. Does anyone know of a reason or reasons this would not work or if it's just a bad idea. Looking for pro's and con's,

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More Than 1 Webserver Behind Router

Apr 15, 2008

Is it possible for forwarding ports for simultaneous use of web servers on the same LAN behind router?

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Mar 29, 2007

I have been thinking of getting a switch/router when I rent 10Us of space in a DC, but what to get?

I need to be able to read the trafficusage on each port/IP for billing purpose.

havent got a clue what to buy, have been told that you can do it with a 1U server to get more statistic out of it, but what OS to use?

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