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Posted by KDawg44 on August 14, 2007, 3:37 pm
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> Hello,
>
> Soon, I will need to setup a t1 line between 2 sites. I have purchased 2
> Cisco 1841 routers with the T1 DSU/CSU card in slot 0 (WIC 1DSU-T1 V2).
>
> Anyway, I think I have everything working properly back to back, but I'm
> running into a weird problem where one side (config A) can only ping the
> other side 60% of the time, and the other side (config B) can not ping
> config A at all. Below are my configurations. Can anybody tell me what I'm
> doing wrong? This is going to be my first T1 deployment, and it has to work.
> Thanks:
>
> Config A:
>
> yourname#show run
>
> Building configuration...
>
> Current configuration : 2044 bytes
>
> !
>
> version 12.4
>
> service timestamps debug datetime msec
>
> service timestamps log datetime msec
>
> no service password-encryption
>
> !
>
> hostname yourname
>
> !
>
> boot-start-marker
>
> boot-end-marker
>
> !
>
> logging buffered 51200 warnings
>
> !
>
> no aaa new-model
>
> !
>
> resource policy
>
> !
>
> mmi polling-interval 60
>
> no mmi auto-configure
>
> no mmi pvc
>
> mmi snmp-timeout 180
>
> ip subnet-zero
>
> ip cef
>
> !
>
> !
>
> no ip dhcp use vrf connected
>
> !
>
> !
>
> ip domain name yourdomain.com
>
> !
>
> username cisco privilege 15 secret 5 $1$uF6w$fMy7xMIp2BRaJMSi214EM/
>
> !
>
> !
>
> !
>
> interface FastEthernet0/0
>
> description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
>
> ip address 10.10.0.1 255.255.0.0
>
> duplex auto
>
> speed auto
>
> !
>
> interface FastEthernet0/1
>
> no ip address
>
> shutdown
>
> duplex auto
>
> speed auto
>
> !
>
> interface Serial0/0/0
>
> ip unnumbered FastEthernet0/0
>
> encapsulation ppp
>
> !
>
> ip classless
>
> !
>
> ip http server
>
> ip http access-class 23
>
> ip http authentication local
>
> ip http timeout-policy idle 60 life 86400 requests 10000
>
> !
>
> access-list 23 permit 10.10.10.0 0.0.0.7
>
> !
>
> control-plane
>
> !
>
> banner login ^C
>
> -----------------------------------------------------------------------
>
> Cisco Router and Security Device Manager (SDM) is installed on this device.
>
> This feature requires the one-time use of the username "cisco"
>
> with the password "cisco". The default username and password have a
> privilege le
>
> vel of 15.
>
> Please change these publicly known initial credentials using SDM or the IOS
> CLI.
>
> Here are the Cisco IOS commands.
>
> username <myuser> privilege 15 secret 0 <mypassword>
>
> no username cisco
>
> Replace <myuser> and <mypassword> with the username and password you want to
> use
>
> .
>
> For more information about SDM please follow the instructions in the QUICK
> START
>
> GUIDE for your router or go tohttp://www.cisco.com/go/sdm
>
> -----------------------------------------------------------------------
>
> ^C
>
> !
>
> line con 0
>
> exec-timeout 0 0
>
> login local
>
> line aux 0
>
> line vty 0 4
>
> access-class 23 in
>
> privilege level 15
>
> login local
>
> transport input telnet
>
> line vty 5 15
>
> access-class 23 in
>
> privilege level 15
>
> login local
>
> transport input telnet
>
> !
>
> end
>
> config B:
>
> yourname#show run
>
> Building configuration...
>
> Current configuration : 2093 bytes
>
> !
>
> version 12.4
>
> service timestamps debug datetime msec
>
> service timestamps log datetime msec
>
> no service password-encryption
>
> !
>
> hostname yourname
>
> !
>
> boot-start-marker
>
> boot-end-marker
>
> !
>
> logging buffered 51200 warnings
>
> !
>
> no aaa new-model
>
> !
>
> resource policy
>
> !
>
> mmi polling-inter
>
> no mmi auto-configure
>
> no mmi pvc
>
> mmi snmp-timeout 180
>
> ip subnet-zero
>
> ip cef
>
> !
>
> !
>
> no ip dhcp use vrf connected
>
> !
>
> !
>
> ip domain name yourdomain.com
>
> !
>
> username p1admins privilege 15 secret 5 $1$nAL8$hheCXtA4rN6.RosXTheFz0
>
> !
>
> !
>
> !
>
> interface FastEthernet0/0
>
> description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-FE 0$
>
> ip address 10.10.10.2 255.255.255.248
>
> duplex auto
>
> speed auto
>
> !
>
> interface FastEthernet0/1
>
> no ip address
>
> shutdown
>
> duplex auto
>
> speed auto
>
> !
>
> interface Serial0/0/0
>
> ip unnumbered FastEthernet0/0
>
> encapsulation ppp
>
> service-module t1 clock source internal
>
> !
>
> ip classless
>
> !
>
> ip http server
>
> ip http access-class 23
>
> ip http authentication local
>
> ip http timeout-policy idle 60 life 86400 requests 10000
>
> !
>
> access-list 23 permit 10.10.10.0 0.0.0.7
>
> !
>
> control-plane
>
> !
>
> banner login ^C
>
> -----------------------------------------------------------------------
>
> Cisco Router and Security Device Manager (SDM) is installed on this device.
>
> This feature requires the one-time use of the username "cisco"
>
> with the password "cisco". The default username an
>
> vel of 15.----------
>
> Please change these publicly known initial credentials using SDM or the IOS
> CLI.
>
> Cisco Router and Security Device Manag
>
> Here are the Cisco IOS commands.ce.
>
> username <myuser> privilege 15 secret 0 <mypassword>ture requires the
> one-time use of the username "cisco
>
> no username cisco
>
> Replace <myuser> and <mypassword> with the username and password you want to
> useassword have a privilege le
>
> .
>
> For more information about SDM please follow the instructions in the QUICK
> START
>
> GUIDE for your router or go tohttp://www.cisco.com/go/sdm
>
> -----------------------------------------------------------------------
>
> ^C
>
> !
>
> line con 0
>
> exec-timeout 0 0
>
> login local
>
> line aux 0
>
> line vty 0 4
>
> access-class 23 in
>
> privilege level 15
>
> login local
>
> transport input telnet
>
> line vty 5 15
>
> access-class 23 in
>
> privilege level 15
>
> login local
>
> transport input telnet
>
> !
>
> end
>
> Right now both routers are configured back to back. Thanks.
>
> -- John
I am not 100% sure, but I believe with ip unnumbered you have to have
some routing protocol running. Do you have a routing protocol
configured?
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