Cisco 1721 router reconfig needed 1

[Strawhidy]

Hi folks,

I need help. I switched to a new ISP and need to reconfigure my Cisco 1721 router for the new connection. I know how to get around my router but I don't know how to reconfigure it for a new ISP. I have all the IP info as well. Any help would be appreciated as my original T1 will be going down in the next two days.

 

[burtsbees]

Another T1? ADSL? What service? What interface?

Burt

 

[Strawhidy]

It's an Earthlink business T1 (TE Burst-T1) Transedge. My existing router already has dual T1 dsu wics and is currently configured for my existing T1s

 

[burtsbees]

So, what needs to change? I am assuming you have a multi l i n k configuration, "bonding" the two T1's...do you need just one T1 config, different channel slot configuration?

Burt

 

[Strawhidy]

I want to back up my existing configuration first just incase I need to go back. Then I want to reconfigure interface 0 for the new T1.

 

[burtsbees]

Well, you could use HyperTerminal to back the config to a notepad .txt file (I always do this and print it out, to have a hard copy), and you could also open a tftp program and
router>en
router#copy start tftp
and just follow the prompts. I always do this as well, so I have 3 copies of my config, and a copy of my IOS in case something happens to my routers and switches, like flash modules going bad.
Posting a sh run would help a bit too.

Burt

 

[Strawhidy]

Thanks for the tip on backing up my config Burst. Do you know anyone that would be willing the telnet to my router and reconfigure it to use my new ISP's settings? Once again, im not to familiar with configuring all the necessary settings to this degree.

 

[burtsbees]

All you have to do is post this output from the router...
router>en
router#sh run
And then post all the necessary info from the ISP. We can tell you exactly how to configure it from there. I would not recommend you give telnet access to just anyone---that's just asking for trouble.

Burt

 

[Strawhidy]

Here is my existing config as it's now setup as dual T1s and the new ISP's info is at the bottom:


Using 3762 out of 29688 bytes
!
version 12.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname NetJam
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$VF4H$IuHF8t1tEbXBs.YHOFnvU.
!
no aaa new-model
!
resource policy
!
ip subnet-zero
no ip source-route

NetJam#sh conf
Using 3762 out of 29688 bytes
!
version 12.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname NetJam
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$VF4H$IuHF8t1tEbXBs.YHOFnvU.
!
no aaa new-model
!
resource policy
!
ip subnet-zero
no ip source-route
!
!
no ip dhcp use vrf connected
!
!
ip cef
no ip domain lookup
!
!
!
!
interface FastEthernet0
description to NetJam LAN
ip address 12.158.72.30 255.255.255.248 secondary
ip address 192.168.0.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip virtual-reassembly
ip route-cache policy
speed 100
!
interface Serial0
description to ATT T1
bandwidth 1536
ip address 206.121.216.162 255.255.255.252
ip load-sharing per-packet
ip nat outside
ip virtual-reassembly
encapsulation ppp
down-when-looped
service-module t1 remote-alarm-enable
!
interface Serial1
description to ATT T1
bandwidth 1536
ip address 12.117.154.6 255.255.255.252
ip load-sharing per-packet
ip nat outside
ip virtual-reassembly
encapsulation ppp
down-when-looped
service-module t1 remote-alarm-enable
!
ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
ip route 0.0.0.0 0.0.0.0 Serial1
no ip http server
!
ip nat pool 2T1S 12.158.72.30 12.158.72.30 prefix-length 29
ip nat inside source list 1 pool 2T1S overload
ip nat inside source static tcp 192.168.0.3 80 12.158.72.30 80 extendable
ip nat inside source static udp 192.168.0.3 80 12.158.72.30 !

access-list 1 permit 192.168.0.0 0.0.0.255
access-list 1 permit 12.158.72.0 0.0.0.255
access-list 1 permit 67.52.175.0 0.0.0.255
access-list 1 permit 12.117.254.0 0.0.0.255
access-list 1 permit 206.121.216.0 0.0.0.255
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
password 7 06080A35464F04485744
login
!
end

---------------------------------------------

The new ip info that was left with me is as follows:

SERVICE PROVIDER: TRANSEDGE
PRODUCT TYPE: TE Burst-T1 up to 1.5
CPE MODE: ROUTING
OPERATION MODE: ATM
ENCAPSULATION TYPE: RFC1483
CIRCUT VCI: 38

WAN IP ADDRESS: 216.217.79.190
WAN IP SUBNET MASK: 255.255.255.252
DEFAULT GATEWAY ADDRESS: 216.217.79.189
DOMAIN: TRANSEDGE.COM
PRIMARY DNS: 209.218.76.2
SECONDARY DNS: 216.171.129.14
USABLE LAN IP's: 209.218.81.114 to 209.218.81.119
LAN ROUTER IP: 209.218.81.113
LAN SUBNET MASK: 255.255.255.248