Two Gateways?

ruffneck · 18 Mar 2006 at 14:04

1 Server, 2 routers, 2 different ISPs, 2 different internal I.P Addresses

anyway to get the server to look at the other router if it fails to connect to the internet?

Skiddley · 18 Mar 2006 at 15:14

An IGP on the internal network :rolleyes:

ruffneck · 18 Mar 2006 at 15:53

Interior gateway protocol?

how?

Mr Man · 18 Mar 2006 at 16:00

If the routers can handle something like HSRP, then you can get them to fail over if one of the ISP connections fail.

ruffneck · 18 Mar 2006 at 16:26

the routers are nothing special, well one's okay

primary router is a draytek vigor VG2800
2nd router is a Dlink 504T

zetec452 · 18 Mar 2006 at 19:54

I think you'll need something with a bit more meat behind it to get that working properly.

If it was me (as a non cisco dude) i'd be looking at a ZyXel ZyWall 35.

Sp00n · 18 Mar 2006 at 19:55

bridge both connections?

ruffneck · 18 Mar 2006 at 20:52

hmm let me give you a little more info on the setup

the above metioned routers

Network Order

router 1 = 192.168.0.10
router 2 = 192.168.0.11

Server (SBS2003) (2 NICS)
Router NIC = 192.168.0.1
Network NIC=192.168.16.2

(Network)

trying to find someway of say if 192.168.0.10 loses its internet connection that the server will realise and use 192.168.0.11 instead...

Topgun · 18 Mar 2006 at 21:11

Get a load balancing router. I have an edmimax br-6524k which cost about £40 and it does the job quite nicely with 2x10mbit internet connectins. If one connection goes it the traffic will fail over to the other line.

Skiddley · 18 Mar 2006 at 21:33

Guys if you want to do serious networking you really have to jib this consumer plop.

Topgun · 19 Mar 2006 at 02:44

Skiddley said:
Guys if you want to do serious networking you really have to jib this consumer plop.

I disagree. I have seen routers that cost £8 that work reliably without a reset for months at a time. For small businesses they are more than adequate.

edit: before getting the edimax i was using a symantec router which retailed at a few hundred quid. It gave me endless problems and the total throughput was less than 8mbps.

zetec452 · 19 Mar 2006 at 09:03

I would never put an 8 pound router into a business environment. Its just plain stupid.

ruffneck · 19 Mar 2006 at 10:01

the draytek, is there main router, its a very good adsl router as Im sure I don't have to tell you

Chief Wiggum · 19 Mar 2006 at 10:42

ok, not wanting to get into the argument of which networking equipment is better, cheep or expensive - I'm biased as I use Cisco at home and at work. If your solution works and is reliable then that's what you go with - also in many cases, the business will decide how important web connectivity is and will spend accordingly.

Also, if you're not massivly up on networking (I appologise to the OP if this is not the case), just a responce stating IGP isn't really the best information to receive especially with the un-needed rolleyes at the end. I think you could have gone a little way to explain your statement, particularly that the OP asked for help. Well that's my 2p anyway.

Howver - although I've not tested that can provide not warrenty etc....
as you're running SB2003, are you running at DCHP scope from it? If this is the case you can add a second router to the scope, which may allow basic failover type connectivity. I'd say worth testing at the very least....

Kev

ruffneck · 19 Mar 2006 at 10:44

Thanks, yea alrdy gone down that route with the DHCP scope, it didn't work :/

Jimathy · 19 Mar 2006 at 12:17

in the settings for your router nic, under the tcp/ip properties go into advanced. have you not tried just adding the second gateway in the default gateways section?

fwiw sbs can be a bit of a monster once you start playing outside of the server management console. a common misconception is that its windows server 2003 with exchange etc,. but it is very much its own monster. found this out the hard way btw.

draytek routers are definately worth a look over.

mattreay · 19 Mar 2006 at 12:40

A nice idea that seems to work reasonably well, not as well as it could with a proper load balancing router, is to set your server as the defaut gateway for all the pcs on your network. Then set up RAS (on Windows) or similar on Linux and set two static routes to 0.0.0.0 and set the gateway to your two routers. Give them both equal metrics and packets are routered more or less equally between the two routers. You must understand you cannot combine both downlink speeds due to having two external IPs but you can have two simulantious connections both downloading at the full speed of each router.

ruffneck · 19 Mar 2006 at 13:36

SBS is definatly its own monster, good advice to stay within the console

will give the RAS idea a go

sja360 · 19 Mar 2006 at 13:37

Topgun said:
Get a load balancing router. I have an edmimax br-6524k which cost about £40 and it does the job quite nicely with 2x10mbit internet connectins. If one connection goes it the traffic will fail over to the other line.

hi mate, does it only work as a fallback connection or can it act as a 20mbp connection with both wan connections running?
sry for going offtopic

mattreay · 19 Mar 2006 at 21:17

no load balancing router will be able to combine the speeds of your internet connections if you have 2 external ip addresses which is what usually happens if you are using two modem/routers. It is in the nature of TCP/IP that if must have a destination IP address and a source IP address, meaning one connection can only be from one router or the other. If you have two seperate TCP/IP connections then you a load balancing router should router one so the source IP is router 1 and the seconds so the source IP is router 2 giving you the full speed of each router per connection.