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Cisco 1721 LAN to WAN Fails

Ok,  Im new here and somewhat new  to Cisco Routers.  I have used them before, but not for an actual live  enviornment.  I happen to have the fortune of my workplace giving me a  Cisco 1721 for my personal use.  I have a WIC-1ENET card for internet  access and a switch with about 10 pcs attached to it.  I am unable to  have any PC get on the internet but, can see other Computers perfectly  fine.  The router can ping ip addresses and websites.  I am hoping that  with the information below, someone can tell me where I configured it  incorrectly.  The ISP is a Cable internet provider and the IP address is  assigned Dynamicly to me.  I am not sure if the WIC-1ENET card and use  cable internet, but it seems to just be a routing issue between the LAN  and WAN.    Thank you in advance

C1721>ping google.com
Translating "google.com"...domain server (68.113.206.10) [OK]

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 74.125.227.51, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/12/20 ms

C1721#sh ip route
Codes: C - connected, S - static, 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
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is 97.94.208.1 to network 0.0.0.0

     68.0.0.0/32 is subnetted, 1 subnets
S       68.114.37.166 [254/0] via 97.94.208.1, Ethernet0
     97.0.0.0/22 is subnetted, 1 subnets
C       97.94.208.0 is directly connected, Ethernet0
     10.0.0.0/27 is subnetted, 1 subnets
C       10.10.1.0 is directly connected, FastEthernet0
S*   0.0.0.0/0 [254/0] via 97.94.208.1


C1721#sh int eth0
Ethernet0 is up, line protocol is up
  Hardware is PQUICC Ethernet, address is 0004.dd0c.0633 (bia 0004.dd0c.0633)
  Internet address is 97.94.209.XXX/22
  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Half-duplex, 10BaseT
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:03, output hang never
  Last clearing of "show interface" counters never
  Input queue: 1/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 5000 bits/sec, 11 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     4052 packets input, 258910 bytes, 0 no buffer
     Received 4046 broadcasts, 0 runts, 0 giants, 0 throttles
     1 input errors, 0 CRC, 0 frame, 1 overrun, 0 ignored
     0 input packets with dribble condition detected
     84 packets output, 9197 bytes, 0 underruns
     0 output errors, 0 collisions, 1 interface resets
     0 babbles, 0 late collision, 1 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out


C1721# sh run
Building configuration...

Current configuration : 1001 bytes
!
! Last configuration change at 12:20:31 CST Sat Nov 13 2010
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname C1721
!
boot-start-marker
boot-end-marker
!
enable password *******
!
clock timezone CST -5
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
ip cef
!
!
ip dhcp excluded-address 10.10.1.2 10.10.1.5
!
ip dhcp pool Default
   network 10.10.1.0 255.255.255.224
   dns-server 68.113.206.10 24.217.0.5
   netbios-name-server 10.10.1.3
   default-router 10.10.1.24
   domain-name Cisco1721
!
no ftp-server write-enable
!
!
!
!
interface Ethernet0
ip address dhcp
full-duplex
!
interface FastEthernet0
ip address 10.10.1.24 255.255.255.224
speed auto
full-duplex
!
ip default-gateway 10.10.1.24
ip classless
ip route 10.10.1.0 255.255.255.224 FastEthernet0
ip http server
!
!
line con 0
line aux 0
line vty 0 4
password ********
login
!
end

C1721#

1 REPLY
Silver

Re: Cisco 1721 LAN to WAN Fails

A good first step is to try NAT.  The following may work for you:


int e0
ip nat outside
exit

int fa0/0
ip nat inside
exit

access-list 100 remark *** NAT Selection ***
access-list 100 permit ip 10.10.1.0 0.0.0.255 any

ip nat inside source list 110 interface e0 overload



This link is a good read:

http://www.cisco.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77.shtml



Chris

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