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Author want some help with dialup...
gohar

2001-11-22, 3:01 pm

hello all,

ok i have a problem and i will try to explain it as simply as possible. i have a cisco as2511rj router with 16 async ports. what i want is to setup the router in such a way that i can use one of the async port with a async modem to connect to the local ISP. i have already a running network at my home right now. i wanted to use the router as a proxy server so all the hosts can connect to the internet via the router.

i was hoping if u can send me all the configurations need for this and how do i go about it. i think i will require to apply NAT to make this work. pls help me in all ways possible so i can set it up as soon as possible. i was wondering if some1 can show me how to implement this.

thanks to one and all. i hope i have given all the required info so u all can work on it. if u require any other info pls do let me know so i can tell u all that i missed here.

thanks once again and hope u guys/gals can reply soon.

thanks.
sidodgers

2001-11-22, 5:57 pm

quote:
Originally posted by gohar
hello all,

ok i have a problem and i will try to explain it as simply as possible. i have a cisco as2511rj router with 16 async ports. what i want is to setup the router in such a way that i can use one of the async port with a async modem to connect to the local ISP. i have already a running network at my home right now. i wanted to use the router as a proxy server so all the hosts can connect to the internet via the router.

i was hoping if u can send me all the configurations need for this and how do i go about it. i think i will require to apply NAT to make this work. pls help me in all ways possible so i can set it up as soon as possible. i was wondering if some1 can show me how to implement this.

thanks to one and all. i hope i have given all the required info so u all can work on it. if u require any other info pls do let me know so i can tell u all that i missed here.

thanks once again and hope u guys/gals can reply soon.

thanks.



OK. Without trying to remember too much theory from BCRAN, here's how I'd do it.

--

interface Async#
dialer pool-member 1
(other async interface params go here)
no shut

interface Dialer1
encapsulation ppp
dialer string (isp phone number)
dialer map ip (isp terminal server ip) (isp phone number)
ip address (isp assigned ip address, or 'negotiated 'if dynamically assigned)
dialer-group 1
no shut

int Ethernet0/0 (substitute correct interface here)
no shut
ip address (x.y.z.a) (b.c.d.e)

dialer-list 1 protocol ip permit

ip route 0.0.0.0 0.0.0.0 (isp ts ip)
--

the dialer-list and dialer-group commands specify 'interesting' traffic to the access server; i.e. traffic which will force the connection to be dialled when the Cisco attempts to route it across the dialer interface.

If you're running an IGP on the box, make sure that you put the Dialer1 interface into 'passive-interface' mode.

HTH

Sid
gohar

2001-11-23, 12:36 pm

thanks for ur help in what u said and i will try to implement it as u have told but i was wondering... dont u think that v have to use NAT in order to use the router with a real IP to link to the IP on the network? pls advise if u can...

thanks once again...
sidodgers

2001-11-23, 8:59 pm

quote:
Originally posted by gohar
thanks for ur help in what u said and i will try to implement it as u have told but i was wondering... dont u think that v have to use NAT in order to use the router with a real IP to link to the IP on the network? pls advise if u can...

thanks once again...



No hassles man,

yes, you will need NAT, specifically overloaded NAT (aka PAT), and I forgot the specifics in my original post because I wrote it in quite a rush.

you'll need a config like the following:
access-list 1 permit (ip-net-to-nat) (cisco-mask-of-net)
ip nat pool outside-global (valid-ip-outside-address start) (address end) (subnet mask)
ip nat inside source list 1 pool outside-global
interface Dialer1
ip nat outside
interface Ethernet0
ip nat inside

HTH, Sid
gohar

2001-11-25, 5:20 am

hi!

thanks sidodgers. i am grateful to u for ur help and all others... i will def. try this config. and let u know if it works... i have not done NAT till now so i have no idea about it, but will study n let u know.

i wanted to know if it is possible to dial-out the AS2511-RJ as default as it is made for dial-in access and what r the parameters that r to be setup for dial-out.

thanks for 1 and all....
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