Connecting LAN to Internet

http://www.yourictmagazine.com/techonology/tips-a-tricks/206-basic-to-configure-a-cisco-router-to-connect-to-internet-

the link above configures the router to access internet.
I wonder if this router is connected to T1 line or to a ADSL router.(it seems like it's a connection to T1 line)
I have seen configurations where they use Dialer interface, I believe that 's when they connect the router to  a ADSL in order to provide internet for users in the LAN.

My Goal is to ask an expert out there to paste the configurations used in both case.
Case1--Connecting LAN --->Cisco Router--->ADSL
Case2--Connecting LAN---->Cisco Router--->T1

Thanks
jskfanAsked:
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Istvan KalmarConnect With a Mentor Head of IT Security Division Commented:
what type of router  you have?
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jskfanAuthor Commented:
Let s try 2691
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Istvan KalmarConnect With a Mentor Head of IT Security Division Commented:
it is non cisco router.
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Istvan KalmarHead of IT Security Division Commented:
Please refer this page howto config dsl:
http://www.dslreports.com/faq/8199
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Istvan KalmarHead of IT Security Division Commented:
Please refer this page about t1:

http://networking.ringofsaturn.com/Cisco/ciscot1.php
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SeeMeShakinMyHeadConnect With a Mentor Commented:
All you need is a default route to the external IP address of your provider.  Or you can use a default route to your external interface.  Example:

interface se0/0
ip address 68.25.11.1 255.255.255.252
<--other options in interface may be here

**Your ISP next hop may be 68.25.11.2

Then you could use either of the following commands:

ip route 0.0.0.0 0.0.0.0 68.25.11.2
or
ip route 0.0.0.0 0.0.0.0 int se0/0

Then, you can configure your clients to default gateway to the internal IP address of your router.  If you want, you can use DHCP to provide all client IP information or statically configure (DHCP is preferred method).  

As far as DNS is concerned, you can either use the router as a DNS server or have one locally that points to your ISP's DNS Servers.  Either way, your clients will need DNS to access Internet resources by name.

Any further questions, please let me know.
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jskfanAuthor Commented:
2691 or 2961 is ok
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jskfanAuthor Commented:

ikalmar:
I have seen this link before. Can you please comment those lines what they mean?
http://www.dslreports.com/faq/8199

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jskfanAuthor Commented:
There should be a Pool of external IPs too
There should be Natting too, that I don't see there in the configuration..
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Istvan KalmarConnect With a Mentor Head of IT Security Division Commented:
If you have external adsl modem you able to use this link:
http://www.dslreports.com/faq/8199

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SeeMeShakinMyHeadConnect With a Mentor Commented:
Is this for a lab or production?
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jskfanAuthor Commented:
ikalmar:
http://www.dslreports.com/faq/8199

Can you write an explanation under each line of the configuration.
Some words are common in most of the configurations, but some they are like unheard of, for instance vpdn,request dial-in, etc.....

I would appreciate it if you write an explanation under each line of the configuration.


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jskfanAuthor Commented:
DSL and T1 Line please
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jskfanAuthor Commented:
I also want to know if :
VPDN for is for Dial up ?

I thought DSL is not considered as Dial up.
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SeeMeShakinMyHeadConnect With a Mentor Commented:
Is the for a lab (for personal educational value and not for Q/A or pre-production testing) or does it offer value to a production environment.  The reason why I ask is that, while we like to everyone, it does take away time from those who need a fix pretty quick, or are under the gun to get a project out the door.  No offense meant, just asking.
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jskfanAuthor Commented:
not production yet..
probably in the LAB
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jskfanAuthor Commented:
Can you write an explanation under each line of the configuration.
Please.
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jskfanAuthor Commented:
I will re-post the question
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