I use a Cisco router connected to our ISP via ISDN and to my SuSE 6.3 box via a Realtek 8139 LAN card. The rest of the office and also our ppp modem dialins, connect to the internet using IP chains via a second Realtek. My only concern is that the Cisco router has a 10 MBit LAN connection to my SuSE box while we have a 64Mbit ISDN link. Not sure why we were supplied a router with a 10 Mb connection, but it works effectivly thus far. Chris On Fri, 21 Apr 2000 09:27:52 -0500, Mearl Danner wrote:

I would think that for your use, a linux box with NAT and a good firewall would be sufficient. Your main problem is to get a something that will connect to the DTE (serial) connection coming from the DSU on the T1 and bridging it to ethernet. We have a Cisco provided by our ISP that does this. The only routing it does is to get traffic from our firewall/NAT (A 3Com Netbuilder) to the Internet.

On Fri, 21 Apr 2000 10:27:35 -0400 Keith Warno wrote:

...

Hello all.

My place o' business is considering getting a T1. Half of the T will be used for data (512kbps) and the other half will be used for voice. Currently we're using crappy cable modem service provided by a crappy cable company.

Anyway, the T will come from Sprint. Sprint has suggested we get a Cisco router but personally I think that would be serious overkill. The T would be serving 8 people, possibly more (but not much more) in the future. There won't be a hell of a lot of traffic over it; most of it will be inbound email, such as from this list! ;-)

My question is: is anyone using or has anyone used a Linux box for routing in a similiar situation? If so, what kind of performance have you seen? Or better yet, is there any reason NOT to use Linux box in such a situation? If we were to get a Cisco router it would probably be leased from Sprint and be under their control. I'd like to avoid this; the point of getting the T is for reliability and to avoid having to rely on an outside party should there be a problem.

Thanks for your feedback, kw /* ** Keith Warno ** Developer & Sys Admin ** http://www.HaggleWare.com/ */

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----------------------------------------- Mearl Danner Data Communications/Network Specialist Email: jmdanner@samford.edu Samford University

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Maybe you are right Merl, I'll read my docs again and confirm... I knew there must be some logical reason they supplied the router they did, but since performance has been fine I haven't been bothered to look into it. Chris On Fri, 21 Apr 2000 10:23:23 -0500, Mearl Danner wrote:

Are you sure that's 64 _M_? ISDNs come in increments of 64kbits. The 10meg Cisco we have has a 10 meg ethernet interface and connections for 2 T1s (3Mbit, fullduplex), which if you take into account the full duplex capacity (6Mbit total) is 60% utilization of a 10mbit half-duplex ethernet port. A little over the recommended 30%.

On Fri, 21 Apr 2000 05:03:35 +950 CN Davies wrote:

...

I use a Cisco router connected to our ISP via ISDN and to my SuSE 6.3 box via

a

...

Realtek 8139 LAN card. The rest of the office and also our ppp modem dialins, connect to the internet using IP chains via a second Realtek.

My only concern is that the Cisco router has a 10 MBit LAN connection to my SuSE box while we have a 64Mbit ISDN link. Not sure why we were supplied a router with a 10 Mb connection, but it works effectivly thus far.

Chris

On Fri, 21 Apr 2000 09:27:52 -0500, Mearl Danner wrote:

...

I would think that for your use, a linux box with NAT and a good firewall would be sufficient. Your main problem is to get a something that will connect to the DTE (serial) connection coming from the DSU on the T1 and bridging it to ethernet. We have a Cisco provided by our ISP that does this. The only routing it does is to get traffic from our firewall/NAT (A 3Com Netbuilder) to the Internet.

On Fri, 21 Apr 2000 10:27:35 -0400 Keith Warno wrote:

...

Hello all.

My place o' business is considering getting a T1. Half of the T will be used for data (512kbps) and the other half will be used for voice. Currently we're using crappy cable modem service provided by a crappy cable company.

Anyway, the T will come from Sprint. Sprint has suggested we get a Cisco router but personally I think that would be serious overkill. The T would be serving 8 people, possibly more (but not much more) in the future. There won't be a hell of a lot of traffic over it; most of it will be inbound email, such as from this list! ;-)

My question is: is anyone using or has anyone used a Linux box for routing in a similiar situation? If so, what kind of performance have you seen? Or better yet, is there any reason NOT to use Linux box in such a situation? If we were to get a Cisco router it would probably be leased from Sprint and be under their control. I'd like to avoid this; the point of getting the T is for reliability and to avoid having to rely on an outside party should there be a problem.

Thanks for your feedback, kw /* ** Keith Warno ** Developer & Sys Admin ** http://www.HaggleWare.com/ */

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----------------------------------------- Mearl Danner Data Communications/Network Specialist Email: jmdanner@samford.edu Samford University

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----------------------------------------- Mearl Danner Data Communications/Network Specialist Email: jmdanner@samford.edu Samford University

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On Wed, 31 Dec 1969, CN Davies wrote:

I use a Cisco router connected to our ISP via ISDN and to my SuSE 6.3 box via a Realtek 8139 LAN card. The rest of the office and also our ppp modem dialins, connect to the internet using IP chains via a second Realtek.

My only concern is that the Cisco router has a 10 MBit LAN connection to my SuSE box while we have a 64Mbit ISDN link. Not sure why we were supplied a router with a 10 Mb connection, but it works effectivly thus far.

Assuming the far more likely probability that your ISDN link is 64 K bit (rather than M bit), you have a 10-megabit LAN connection on the router because 10-megabit ethernet is the cheapest widely available sort of local-area networking. The other popular one is 100-megabit ethernet. Anything else is either substantially more expensive or extremely new, and in either event substantially less common. At least for the North American market. I can only have suspicions about the other half of the world. (At present, North America IS approximately half the computer networking world, down from 75% a few years ago.) -- To unsubscribe send e-mail to suse-linux-e-unsubscribe@suse.com For additional commands send e-mail to suse-linux-e-help@suse.com Also check the FAQ at http://www.suse.com/Support/Doku/FAQ/