10-10-2002 11:15 PM - edited 03-02-2019 01:59 AM
Hello, I have a simple task. Connect a PC over a cisco2611 BRI to a ISP.
Ip addresses: pc 10.10.10.2 , eth0/0 10.10.10.1, dialer1 ip address negoiated.
DNS Server address is 194.158.230.53 (known). ip routing on PC enabled.
Ping is always to this ip address. Ping from Router console to DNS is ok.
Ping from PC to dialer1 (if it is up) ipaddress is ok. But ping from PC to DNS ip address is not ok. Deb ip packets shows message: unroutable.
static route is defined.
Here is the configuration.
Thanks for help to anybody. Ruedi
sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname Cisco2611
!
enable secret 5 $1$rO0v$Cqy2Bxtqbtz4xuXttzeLQ/
!
ip subnet-zero
no ip domain-lookup
isdn switch-type basic-net3
!
!
!
interface Ethernet0/0
description connected to EthernetLAN
ip address 10.10.10.1 255.0.0.0
no ip directed-broadcast
!
interface Serial0/0
no ip address
no ip directed-broadcast
no ip mroute-cache
shutdown
!
interface BRI0/0
description connected to Internet
no ip address
no ip directed-broadcast
encapsulation ppp
dialer rotary-group 1
isdn switch-type basic-net3
no cdp enable
!
interface Ethernet0/1
no ip address
no ip directed-broadcast
shutdown
!
interface Dialer1
description connected to Internet
ip address negotiated
no ip directed-broadcast
encapsulation ppp
no ip split-horizon
dialer in-band
dialer string 015550065
dialer hold-queue 10
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname sunrise
ppp chap password 7 130305170E1F11382D
ppp pap sent-username sunrise password 7 121F1712171819162C
!
router rip
version 2
redistribute static metric 1
passive-interface Dialer1
network 10.0.0.0
no auto-summary
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
!
dialer-list 1 protocol ip permit
snmp-server community public RO
!
line con 0
exec-timeout 0 0
password 7 070A2F4D
login
transport input none
line aux 0
line vty 0 4
password 7 0824424F
login
!
no scheduler allocate
end
Cisco2611#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
U - per-user static route, o - ODR
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
C 10.0.0.0/8 is directly connected, Ethernet0/0
S* 0.0.0.0/0 is directly connected, Dialer1
Cisco2611#
________________________________________
10-11-2002 12:03 AM
Hi,
the answere is very simple. Because you use no official IP address in your ethernet (10.0.0.0) which is not routed in the internet it didn't work.
You have to configure network address translation (NAT) on your router,
so that the source IP form your PC is translated into the serial IP you get
from the provider.
How to configure NAT check this URL on CCO:
http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.shtml
regards Ulrich Marzoli
10-11-2002 01:03 AM
Hello Ulrich,
Thanks for message. In the examples are ipaddresses for serial interface.
But what's if there is DHCP over dialer interface. Is there any way to configure nat. Or could I set 'interfacename' instead of an ip address ?
Ruedi
10-11-2002 03:27 AM
Hi Ulrich,
Problem is solved. Found solution with command
ip nat inside source list 10 interface dialer 1 overload
access-list 10 permit 10.10.10.2 (my pc)
Regards Ruedi
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