Hello,
I am new to cisco and i already loved it.
I am testing a cisco 1841 router with an adsl interface.
My goal is to enable DHCP on interface 0/0 in order for my LAN connected pc's to get ip and internet automatically.
I have followed this guide to setup my router.
http://www.cisco.com/en/US/tech/tk175/tk15/technologies_configuration_example09186a008071a601.shtml
My problem is a follow. The router connect to my ISP and to get dynamic IP addresse. But LAN pc's are not getting internet through DHCP Now, I don't know why its not working. Maybe somebody can help with the following details given below. I tried to put as much details possible.
This is what i can see on my normal DSL modem which i am going to replace with the router.
Encapsulation Mode:
VC/MUX
Authentication: CHap
IP optain automatically from ISP
MTU 1492
MY DSL wan summary
PORT / VPI / VCI: 0 / 8 / 35
Connection Type: PPPoA
Service Name: pppoa_0_8_35_1
Service Category: UBR
IP Address: Automatically Assigned
Service State: Enabled
NAT: Enabled
Firewall: Disabled
IGMP Multicast: Disabled
Quality Of Service: Disabled
MTU: 1492
This information reflects the current status of your DSL connection.
Line Rate - Upstream (Kbps): 380
Line Rate - Downstream (Kbps): 5116
LAN IP Address: 192.168.1.1
Default Gateway: 197.224.160.1
Primary DNS Server: 196.192.110.11
Secondary DNS Server: 202.123.2.35
This is my cisco config
Current configuration : 1995 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
logging buffered 4096 debugging
!
no aaa new-model
!
resource policy
!
memory-size iomem 5
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 dhcp excluded-address 192.168.1.1
!
ip dhcp pool localpc
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 202.123.2.6 202.123.2.11
!
!
!
username seb privilege 15 secret 5 $1$CHhW$AZtxmsGL.qxVCfwiHo./X1
!
!
!
interface FastEthernet0/0
ip address 192.168.1.1 255.255.255.0
ip nat inside
duplex auto
speed auto
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface ATM0/0/0
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0/0/0.2 point-to-point
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
!
interface Serial0/1/0
no ip address
shutdown
clockrate 2000000
!
interface Dialer0
ip address negotiated
ip access-group sdm_dialer0_out out
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname craintec@tplus
ppp chap password 0 crains05
ppp pap sent-username craintec@tplus password 0 crains05
!
ip classless
ip route 0.0.0.0 0.0.0.0 202.123.2.6
ip route 0.0.0.0 0.0.0.0 ATM0/0/0.2
!
ip http server
ip nat inside source list 1 interface Dialer0 overload
!
ip access-list extended sdm_dialer0_out
remark SDM_ACL Category=1
permit ip any any
!
access-list 1 remark INSIDE_IF=FastEthernet0/0
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 1 permit 0.0.0.1 255.255.255.0
dialer-list 1 protocol ip permit
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
privilege level 15
login local
line vty 5 15
privilege level 15
login local
!
end
Here ppp logging session. As you can see, the router connect to my ISP and get IP address.
Router#
*Jan 28 19:41:57.534: %LINK-3-UPDOWN: Interface ATM0/0/0, changed state to up
*Jan 28 19:42:00.534: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/0/0, changed state to up
*Jan 28 19:42:03.850: %LINK-3-UPDOWN: Interface Virtual-Access2, changed state to up
*Jan 28 19:42:03.850: %DIALER-6-BIND: Interface Vi2 bound to profile Di0
*Jan 28 19:42:03.850: Vi2 PPP: Using dialer call direction
*Jan 28 19:42:03.850: Vi2 PPP: Treating connection as a callout
*Jan 28 19:42:03.850: Vi2 PPP: Session handle[1B000012] Session id[87]
*Jan 28 19:42:03.850: Vi2 PPP: Phase is ESTABLISHING, Active Open
*Jan 28 19:42:03.850: Vi2 PPP: No remote authentication for call-out
*Jan 28 19:42:03.850: Vi2 LCP: O CONFREQ [Closed] id 26 len 10
*Jan 28 19:42:03.850: Vi2 LCP: MagicNumber 0x1C4E0B9A (0x05061C4E0B9A)
*Jan 28 19:42:05.858: Vi2 LCP: TIMEout: State REQsent
*Jan 28 19:42:05.858: Vi2 LCP: O CONFREQ [REQsent] id 27 len 10
*Jan 28 19:42:05.858: Vi2 LCP: MagicNumber 0x1C4E0B9A (0x05061C4E0B9A)
*Jan 28 19:42:07.874: Vi2 LCP: TIMEout: State REQsent
*Jan 28 19:42:07.874: Vi2 LCP: O CONFREQ [REQsent] id 28 len 10
*Jan 28 19:42:07.874: Vi2 LCP: MagicNumber 0x1C4E0B9A (0x05061C4E0B9A)
*Jan 28 19:42:07.914: Vi2 LCP: I TERMREQ [REQsent] id 0 len 4
*Jan 28 19:42:07.914: Vi2 LCP: O TERMACK [REQsent] id 0 len 4
*Jan 28 19:42:09.890: Vi2 LCP: TIMEout: State REQsent
*Jan 28 19:42:09.890: Vi2 LCP: O CONFREQ [REQsent] id 29 len 10
*Jan 28 19:42:09.890: Vi2 LCP: MagicNumber 0x1C4E0B9A (0x05061C4E0B9A)
*Jan 28 19:42:10.134: Vi2 LCP: I CONFREQ [REQsent] id 44 len 19
*Jan 28 19:42:10.134: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.134: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.134: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.134: Vi2 LCP: O CONFNAK [REQsent] id 44 len 8
*Jan 28 19:42:10.134: Vi2 LCP: MRU 1500 (0x010405DC)
*Jan 28 19:42:10.134: Vi2 LCP: I CONFACK [REQsent] id 29 len 10
*Jan 28 19:42:10.134: Vi2 LCP: MagicNumber 0x1C4E0B9A (0x05061C4E0B9A)
*Jan 28 19:42:10.174: Vi2 LCP: I CONFREQ [ACKrcvd] id 45 len 19
*Jan 28 19:42:10.174: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.174: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.174: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.174: Vi2 LCP: O CONFNAK [ACKrcvd] id 45 len 8
*Jan 28 19:42:10.174: Vi2 LCP: MRU 1500 (0x010405DC)
*Jan 28 19:42:10.218: Vi2 LCP: I CONFREQ [ACKrcvd] id 46 len 19
*Jan 28 19:42:10.218: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.218: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.218: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.218: Vi2 LCP: O CONFNAK [ACKrcvd] id 46 len 8
*Jan 28 19:42:10.218: Vi2 LCP: MRU 1500 (0x010405DC)
*Jan 28 19:42:10.258: Vi2 LCP: I CONFREQ [ACKrcvd] id 47 len 19
*Jan 28 19:42:10.258: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.258: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.258: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.258: Vi2 LCP: O CONFNAK [ACKrcvd] id 47 len 8
*Jan 28 19:42:10.258: Vi2 LCP: MRU 1500 (0x010405DC)
*Jan 28 19:42:10.302: Vi2 LCP: I CONFREQ [ACKrcvd] id 48 len 19
*Jan 28 19:42:10.302: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.302: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.302: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.302: Vi2 LCP: O CONFNAK [ACKrcvd] id 48 len 8
*Jan 28 19:42:10.302: Vi2 LCP: MRU 1500 (0x010405DC)
*Jan 28 19:42:10.346: Vi2 LCP: I CONFREQ [ACKrcvd] id 49 len 19
*Jan 28 19:42:10.346: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.346: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.346: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.346: Vi2 LCP: O CONFREJ [ACKrcvd] id 49 len 8
*Jan 28 19:42:10.346: Vi2 LCP: MRU 1492 (0x010405D4)
*Jan 28 19:42:10.386: Vi2 LCP: I CONFREQ [ACKrcvd] id 50 len 15
*Jan 28 19:42:10.386: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.386: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.390: Vi2 LCP: O CONFACK [ACKrcvd] id 50 len 15
*Jan 28 19:42:10.390: Vi2 LCP: AuthProto CHAP (0x0305C22305)
*Jan 28 19:42:10.390: Vi2 LCP: MagicNumber 0x4EF25365 (0x05064EF25365)
*Jan 28 19:42:10.390: Vi2 LCP: State is Open
*Jan 28 19:42:10.390: Vi2 PPP: Phase is AUTHENTICATING, by the peer
*Jan 28 19:42:10.430: Vi2 CHAP: I CHALLENGE id 1 len 26 from "SE-FL"
*Jan 28 19:42:10.430: Vi2 CHAP: Using hostname from interface CHAP
*Jan 28 19:42:10.430: Vi2 CHAP: Using password from interface CHAP
*Jan 28 19:42:10.430: Vi2 CHAP: O RESPONSE id 1 len 35 from "craintec@tplus"
*Jan 28 19:42:10.518: Vi2 CHAP: I SUCCESS id 1 len 42 msg is "CHAP authentication success, unit 2016"
*Jan 28 19:42:10.518: Vi2 PPP: Phase is FORWARDING, Attempting Forward
*Jan 28 19:42:10.518: Vi2 PPP: Queue IPCP code[1] id[219]
*Jan 28 19:42:10.518: Vi2 PPP: Phase is ESTABLISHING, Finish LCP
*Jan 28 19:42:10.518: Vi2 PPP: Phase is UP
*Jan 28 19:42:10.518: Vi2 IPCP: O CONFREQ [Closed] id 1 len 10
*Jan 28 19:42:10.518: Vi2 IPCP: Address 0.0.0.0 (0x030600000000)
*Jan 28 19:42:10.518: Vi2 CDPCP: O CONFREQ [Closed] id 1 len 4
*Jan 28 19:42:10.518: Vi2 PPP: Process pending ncp packets
*Jan 28 19:42:10.522: Vi2 IPCP: Redirect packet to Vi2
*Jan 28 19:42:10.522: Vi2 IPCP: I CONFREQ [REQsent] id 219 len 10
*Jan 28 19:42:10.522: Vi2 IPCP: Address 197.224.160.1 (0x0306C5E0A001)
*Jan 28 19:42:10.522: Vi2 IPCP: O CONFACK [REQsent] id 219 len 10
*Jan 28 19:42:10.522: Vi2 IPCP: Address 197.224.160.1 (0x0306C5E0A001)
*Jan 28 19:42:10.562: Vi2 IPCP: I CONFNAK [ACKsent] id 1 len 10
*Jan 28 19:42:10.562: Vi2 IPCP: Address 197.224.161.76 (0x0306C5E0A14C)
*Jan 28 19:42:10.562: Vi2 IPCP: O CONFREQ [ACKsent] id 2 len 10
*Jan 28 19:42:10.562: Vi2 IPCP: Address 197.224.161.76 (0x0306C5E0A14C)
*Jan 28 19:42:10.562: Vi2 LCP: I PROTREJ [Open] id 51 len 10 protocol CDPCP (0x820701010004)
*Jan 28 19:42:10.562: Vi2 CDPCP: State is Closed
*Jan 28 19:42:10.562: Vi2 CDPCP: State is Listen
*Jan 28 19:42:10.606: Vi2 IPCP: I CONFACK [ACKsent] id 2 len 10
*Jan 28 19:42:10.606: Vi2 IPCP: Address 197.224.161.76 (0x0306C5E0A14C)
*Jan 28 19:42:10.606: Vi2 IPCP: State is Open
*Jan 28 19:42:10.606: Di0 IPCP: Install negotiated IP interface address 197.224.161.76
*Jan 28 19:42:10.606: Di0 IPCP: Install route to 197.224.160.1
*Jan 28 19:42:10.610: Vi2 IPCP: Add link info for cef entry 197.224.160.1
*Jan 28 19:42:11.518: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up
More info:
Router#show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 192.168.1.1 YES NVRAM up up
FastEthernet0/1 unassigned YES NVRAM administratively down down
ATM0/0/0 unassigned YES NVRAM up up
ATM0/0/0.1 unassigned YES unset deleted down
ATM0/0/0.2 unassigned YES unset up up
Serial0/1/0 unassigned YES NVRAM administratively down down
NVI0 unassigned YES unset up up
Virtual-Access1 unassigned YES unset up up
Virtual-Access2 unassigned YES unset up up
Dialer0 197.224.161.76 YES IPCP up up
Router#
*Jan 28 19:43:49.190: Vi2 PPP: Outbound cdp packet dropped
thanks in advanced for your kind helps.
