01-25-2010 07:40 PM - edited 03-06-2019 09:26 AM
I am bit new to cisco and i am learning CCNA.
i have 3 routers with a switch and pc connected to the switch.
i am working on RIP and i enabled it on all routers and i am able to ping all interfaces/devices (2950 switch, 2500 & 2600 routers)
my current connection looks like this
PC---Switch(2950)---Router2(2610)---Router1(2500)---Router3(2610)--- Cable/Dsl Router(D-Link)--Cable modem
i can ping from PC to Router3's both interfaces but soon as i try to ping the Cable/Dsl Router or any external ip i get request timed out.
on my router3 f/e0 is connected to the Cable/DSL switch port.
The thing is from router3 i can ping external ip and the cable/dsl router. (i think i am missing out on something !!!)
Router3 running-config
!
version 12.4
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname C2610XM_R3
!
boot-start-marker
boot-end-marker
!
enable secret 5 $
!
no aaa new-model
no network-clock-participate slot 1
no network-clock-participate wic 0
ip cef
!
!
!
!
ip domain lookup source-interface FastEthernet0/0
ip domain name lab.local
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 172.17.64.2 255.255.240.0
duplex auto
speed auto
!
interface Serial0/0
ip address 172.17.32.2 255.255.240.0
!
interface BRI0/0
no ip address
encapsulation hdlc
shutdown
!
router rip
version 2
network 172.17.0.0
!
no ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 172.17.64.1
!
no ip http server
no ip http secure-server
!
!
control-plane
!
banner login -- X.X.32.0 / X.X.64.0 --
alias exec con conf t
alias exec sib show ip int brief
alias exec srb show run | b
alias exec sri show run int
!
line con 0
exec-timeout 0 0
logging synchronous
line aux 0
line vty 0 4
password 7
login
!
!
end
Solved! Go to Solution.
01-25-2010 10:05 PM
Hi,
For communicating to external world natting needs to be done at router 3 and as you have told that from router 3 you are able to ping external ips,check out the reverse route for internal subnet in dsl modem.
and check out the link on natting also.
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.shtml
Hope to help !!
Ganesh.H
01-25-2010 10:05 PM
Hi,
For communicating to external world natting needs to be done at router 3 and as you have told that from router 3 you are able to ping external ips,check out the reverse route for internal subnet in dsl modem.
and check out the link on natting also.
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.shtml
Hope to help !!
Ganesh.H
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