Yes, It's doable. If your ISP doesn't give you a static IP, then you'll need Ios 11.3+ because it has the Ip address Negotiated command.
1. Connect the modem to the aux port. Configure the aux port for the Maximum baud rate, no exec, and Reverse telnet. 2. Reverse telnet to the modem to make sure everything works right. 3. Configure Reset and Dial Chat Scripts for the modem wit appropriate AT commands. 4. Stick the async interface (aux) in a Dialer Pool 5. Create your Dialer interface with the parameters necessary to dial-up to your ISP. Here is a working config. Ignore the nat configuration. version 11.3 service timestamps debug uptime service timestamps log uptime ! hostname 2501_Top ! enable password password ! ip subnet-zero ip nat inside source list 99 interface Dialer1 overload chat-script dial ABORT ERROR "" "AT Z" OK "ATm0DT \T" TIMEOUT 30 CONNECT \c ! ! interface Ethernet0 ip address 172.16.0.2 255.255.255.252 ip nat inside ! interface Serial0 no ip address no ip mroute-cache no keepalive ! interface Serial1 ip address 10.0.0.1 255.255.255.252 encapsulation frame-relay frame-relay map ip 10.0.0.2 17 broadcast ! interface Async1 no ip address encapsulation ppp dialer in-band dialer pool-member 1 ppp authentication pap chap callin ! interface Dialer1 ip address negotiated ip nat outside encapsulation ppp dialer remote-name ELN/username dialer string 9,9770971 dialer hold-queue 100 dialer pool 1 dialer-group 1 ppp authentication pap chap callin ppp chap hostname ELN/username ppp chap password mypassword ! router rip redistribute connected network 172.16.0.0 neighbor 10.0.0.2 ! ip classless ip route 0.0.0.0 0.0.0.0 Dialer1 ! access-list 2 deny any access-list 99 permit 192.168.0.0 0.0.255.255 access-list 99 permit 172.16.0.0 0.15.255.255 access-list 99 permit 0.0.0.0 0.255.255.255 ! line con 0 exec-timeout 3 0 line aux 0 no exec script dialer dial modem InOut modem autoconfigure type usr_sportster transport input all stopbits 1 speed 38400 line vty 0 4 password password login ! end -----Original Message----- From: Thomas Yi [mailto:[EMAIL PROTECTED]] Sent: Saturday, November 17, 2001 1:38 PM To: [EMAIL PROTECTED] Subject: 2501 AUX to modem help. [7:26589] Hi. I would like to connect my modem to AUX port on my 2501 router, so I can connect to my router through PSTN. Is this possible? BTW I need to do some configuration on my modem. how do I access modem through router? Is it possible? In my BCRA class, we've used 3640 router. Configured the ethernet interface and we were able to connect to the modem using the ip address of ethernet and the port number which was 2033. The modem was connected to s1/0 on the slot 1. BTW y is it that when I used the ip address and the port number of the modem 2033, I was not able to telnet to the mode? even through the modem was physically attached to that serial interface? instead we used the ehternet int ip address. Then do I have to configure my E0 interface to access modem that is physically attached to AUX port? If so with what port number? If not, how do I do it. TIA Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=26714&t=26589 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
