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Point to Point T1 using Cisco 2620 and Adtran 3200

Posted on 2009-07-10
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Last Modified: 2012-05-07
I am having a problem getting my two routers configured correctly so that we can utilitze our point to point T1.  I am by far not an expert with routers so please bear with me.  I currently have the routers configured in this manner.
Main Office
Adtran 3200
external (T1) IP address 172.20.1.1 255.255.255.0
internal IP address 172.18.1.19

Remote Location
Cisco 2620
external (T1) IP address 172.20.1.2 255.255.255.0
internal IP address 172.18.5.1

The remote location has PLC that will need to talk with a server at the Main office.  We have no internet that will need to be configured.  I basically want all traffic from the remote site to go down the Point to Point, and traffic destin for the 172.18.5.x network to travel from the Main Office down the Point to Point.

A little bit more insight into how I got into the Cisco Adtran environment.  To make is short we orderd 2 Adtrans one showed up.  We need this link up this weekend, and had the Cisco laying around.  I lost the .bin file on it and reloaded one that I had found...hopefully this is correct.

Below is the results of show run on both routers.
 
Main office Adtran Router

sh run

Building configuration...

!

!

! ADTRAN, Inc. OS version 17.05.02.00

! Boot ROM version 17.02.01.00

! Platform: NetVanta 3205 AC, part number 1203870G1

! Serial number LBADTN0903AF655

!

!

hostname "Router"

enable password password

!

clock timezone -6-Central-Time

!

ip subnet-zero

ip classless

ip routing

!
 

!
 

!

!

no auto-config

!

--MORE--        event-history on

no logging forwarding

no logging email

!

no service password-encryption

!

username "admin" password "password"

!

banner motd #

                ****** Important Banner Message ******
 

Enable and Telnet passwords are configured to "password".

HTTP and HTTPS default username is "admin" and password is "password".

Please change them immediately.
 

The ethernet 0/1 interface is enabled with an address of 10.10.10.1

Telnet, HTTP, and HTTPS access are also enabled.

To remove this message, while in configuration mode type "no banner motd".
 

                  ****** Important Banner Message ******
 
 

#

--MORE--        !

ip policy-timeout tcp telnet 14400

!

no ip firewall alg msn

no ip firewall alg mszone

no ip firewall alg h323

!

!

!

!

!

!

!

no dot11ap access-point-control

!

!

!

!

!

!

!

!

!

--MORE--        !

interface eth 0/1

  ip address  172.18.1.19  255.255.0.0 

  no shutdown

!

!

!

!

interface t1 1/1

  tdm-group 1 timeslots 1-24 speed 64

  no shutdown

!

interface ppp 1

  ip address  172.20.1.1  255.255.255.0 

  peer default ip address 172.20.1.2

  no shutdown

  cross-connect 1 t1 1/1 1 ppp 1

!

!

!

!

!

!

--MORE--        !

!

ip route 0.0.0.0 0.0.0.0 ppp 1

ip route 172.18.5.0 255.255.255.0 172.20.1.2

!

no ip tftp server

no ip tftp server overwrite

ip http server

ip http secure-server

no ip snmp agent

no ip ftp server

no ip scp server

no ip sntp server

!

!

!

!

no snmp-server enable traps

!

!

!

!
 

!
 

--MORE--        !
 

!

line con 0

  no login

!

line telnet 0 4

  login

  password password

  no shutdown

line ssh 0 4

  login local-userlist

  no shutdown

!

!

!

!

!

end
 
 
 

Remote Location Cisco 2620

sh run

Building configuration...
 

Current configuration:

!

version 12.0

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname Router

!

enable secret 5 $1$20Us$MITn8gd87Fd8svzIUnV3D1

enable password ciscoen

!

!

!

!

!

ip subnet-zero

!

!

!

!

interface FastEthernet0/0

 --More--          ip address 172.18.5.1 255.255.0.0

 no ip directed-broadcast

 speed auto

 half-duplex

!

interface Serial0/0

 description connected to KU-MOB

 ip address 172.20.1.2 255.255.255.0

 no ip directed-broadcast

 encapsulation ppp

 no ip mroute-cache

!

router igrp 1

 redistribute connected

 network 172.18.0.0

 network 172.20.0.0

!

ip classless

ip route 0.0.0.0 0.0.0.0 172.20.1.1

no ip http server

!

dialer-list 1 protocol ip permit

dialer-list 1 protocol ipx permit

 --More--         !

line con 0

 transport input none

line aux 0

line vty 0 4

 password cisco

 login

!

end

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Question by:lahma35
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3 Comments
 
LVL 28

Expert Comment

by:Jan Springer
ID: 24831253
I would recommend configuring OSPF and announce the connected subnets and static routes at each end.  With only two points, there is no need for a default route.  This, both networks will know the location of each others address space.
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Accepted Solution

by:
lahma35 earned 0 total points
ID: 24840838
Jesper
Thank you for the reply.  I did end up getting the point to point up this weekend.  It was IP subnetting issues.  We figured out we were using a /16 subnet for our network which through a big hurdle into making the routes work.  We ended up changing this site to a 192.x.x.x/24 IP scheme which resolved the routing issues.
I am unfamiliar with OSPF.  Could you give me a little more info on how this would be an easier solution for this situation?

Thanks
0
 
LVL 28

Expert Comment

by:Jan Springer
ID: 24840969
OSPF is an interior routing protocol used to establish OSPF neighbors and announce known local prefixes to neighbors.  I don't clearly understand your original problem, so I can't say for sure that OSPF would have fixed it.
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