General discussion


Cisco 857 configuration for BT DSL

By phid2002 ·
Hi i hope there is somebody who can take a look at this configuration of a Cisco Router 857 and tell me where is the mistake. I managed to get connected to the dsl line, meaning i received the DNS servers and IP automatically from the ISP but i can't ping outside, i don't have internet on my local network.

Building configuration...

Current configuration : 5940 bytes
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
hostname TEST
logging buffered 51200
logging console critical
enable secret 5 $1$HhC4$DQeQurMkLGFAidjyXzqul/
no aaa new-model
clock timezone PCTime 0
clock summer-time PCTime date Mar 30 2003 1:00 Oct 26 2003 2:00
crypto pki trustpoint TP-self-signed-1984768014
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-1984768014
revocation-check none
rsakeypair TP-self-signed-1984768014
crypto pki certificate chain TP-self-signed-1984768014
certificate self-signed 01
30820251 308201BA A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 31393834 37363830 3134301E 170D3032 30333031 30383031
32345A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D31 39383437
36383031 3430819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100BF90 46E2657C ED3A3C8B 212982D7 003928B5 F6996ECB **2BDA36 F3AA502D
40B4FCB9 4AC16FBD 81607E79 15E7B645 D7D12138 A4DBB51A 99DBCCE4 0A5D3909
F2873C03 2722160B 37CD1753 5593FCD9 AB01964D 3CAF41BF AB5CD0F8 BCDD4DF5
CFB00FB7 777C4C04 B2DA582D 28983C76 D557D8C0 17E2C624 01308547 E4ABCF85
97F50203 010001A3 79307730 0F060355 1D130101 FF040530 030101FF 30240603
551D1104 1D301B82 19706861 726D6368 656D2E70 6861726D 6368656D 2E636F2E
756B301F 0603551D 23041830 168014D6 638242D5 EEAE00A4 C3516D48 25A21B7A
0584A230 1D060355 1D0E0416 0414D663 8242D5EE AE00A4C3 516D4825 A21B7A05
84A2300D 06092A86 4886F70D 01010405 00038181 004AF457 EE5E7588 90C3777E
E666C0AE 93FF7261 83852E61 725BDB21 DA6E9DF1 9CFFA72C AB6FB850 BFBCD2AF
8BB68C2D 7BB55276 409C034C 15E0BEC9 832B65A3 30243E62 ADEBBAD1 E7DF0871
8AB5CF74 0F5D4B35 9F84E603 F1190E26 2FCAE8FB 27E946BE F02F590A B61A678C
09F92375 2BA804C6 B647EC55 BFAAD26A D04451DD F2
dot11 syslog
no ip source-route
ip cef
no ip bootp server
ip domain name
username cisco857 privilege 15 secret 5 $1$1EbA$RXrUFucWHprvvX46YejU40
log config
ip tcp synwait-time 10
ip ssh time-out 60
ip ssh authentication-retries 2
interface ATM0
description British Telecom - BT
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip route-cache policy
ip route-cache flow
no atm ilmi-keepalive
dsl operating-mode auto
interface ATM0.1 point-to-point
description $ES_WAN$$FW_OUTSIDE$
ip nat outside
ip virtual-reassembly
pvc 0/38
encapsulation aal5mux ppp dialer
dialer pool-member 1
interface FastEthernet0
interface FastEthernet1
interface FastEthernet2
interface FastEthernet3
interface Vlan1
description LAN ip static retea
ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip nat inside
ip virtual-reassembly
ip route-cache same-interface
ip route-cache policy
ip route-cache flow
ip tcp adjust-mss 1452
hold-queue 100 in
hold-queue 100 out
interface Dialer0
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip route-cache policy
ip route-cache flow
dialer pool 1
dialer idle-timeout 0
dialer-group 1
no cdp enable
ppp authentication chap callin
ppp chap hostname username@BT
ppp chap password 7 passBT
ppp pap sent-username username@BT password 7 passBT
ppp ipcp dns request
ppp ipcp mask request
ppp ipcp route default
ppp ipcp address accept
ip forward-protocol nd
ip route Dialer0
ip http server
ip http access-class 23
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip nat inside source list 1 interface ATM0.1 overload
ip access-list standard ACL_DIALER0_OUT
remark CCP_ACL Category=1
permit any
ip access-list extended ACL_DIALER0_IN
remark DHCP <IPS>
remark CCP_ACL Category=16
permit udp any any eq bootpc
permit udp any any eq bootps
logging trap debugging
access-list 1 permit
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark CCP_ACL Category=2
access-list 1 permit
dialer-list 1 protocol ip permit
no cdp run
line con 0
login local
no modem enable
transport output telnet
line aux 0
login local
transport output telnet
line vty 0 4
privilege level 15
login local
transport input telnet ssh
transport output none
scheduler max-task-time 5000
scheduler allocate 4000 1000
scheduler interval 500

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Do this

by NetMan1958 In reply to Cisco 857 configuration f ...

on one of your computers on the LAN, open a command prompt and run "ipconfig /all" and post the output.

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by phid2002 In reply to Do this


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related info

by phid2002 In reply to ipconfig

on the cisco router there is a software cisco CP and when i trying to test the interface it's showing the same thing ... like after connecting to the dsl line the router takes the dns and the ip but when pinging the dns it shows timeout

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RE: Related info

by NetMan1958 In reply to related info

What is a "software cisco CP"? I'm not familiar with that term.

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Additional questions

by NetMan1958 In reply to ipconfig

What did the ipconfig results show for the DNS server(s)? Also, how did you come to use as an internal IP? That is a public IP and is not usually used on hosts in the LAN. Further, with the subnet mask, is not a usable IP. I'm surprised your computer didn't reject it.

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by phid2002 In reply to Additional questions

Cisco provides a CD with a software Cisco CP Express.

actually at this stage i gave a Netgear router working , and we have 5 static ip from the ISP and it is - , one ip is for the router, one is for the server 2003, and the other 3 for other 3 servers. the subnet mask is on all of them and is working becasue

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Does that mean

by NetMan1958 In reply to ip

That you decided to use the Netgear instead of the Cisco and that everything is working now? Or do you still want to use the Cisco? I'm confused as to what the static range - has to do with the that you are using on your LAN.

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by phid2002 In reply to Does that mean

I want to use Cisco instead of Netgear because we have lots of hang up / frezzeing of Netgear router and cisco is more reliable

This IP is not real in this post i just puted as a orientation the real one is

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Making more sense now

by NetMan1958 In reply to means

In your current setup using the Netgear, are you using the public IP Addresses directly on the servers are is the Netgear using static NAT to map the public IPs to private IPs that are assigned to the servers?

According to the Cisco config you posted, the router is getting it's IP via DHCP and is "NATing" all outbound traffic to that IP.

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ping from console it's working

by phid2002 In reply to Cisco 857 configuration f ...

ping from console it's working but on the network i still don't have access and the ip of the pc has the sme class like the ip of the router and the same mask and the gateway is the same ip og the router ip

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