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DHCP for incomming bri users could not access the network

furquan
Level 1
Level 1

I have configured cisco 2621 router for one incomming bri session, such that user when dials get the ip addrss form Winnt DHCP server, But could not communicate form the network i-e nor ping the same network or communicate.

Even entring the static route. But gets ip address from dhcp server, but could not use the network.

My running configuraion is as follows :

kiit#sh running-config

Building configuration...

Current configuration:

!

version 12.0

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname kiit

!

enable secret 5 $1$A6Pk$cC6fnLAgwigxkDb.tzBxf/

!

username furquan password 0 xxxxxxx

!

!

!

!

ip subnet-zero

ip name-server 194.170.1.6

ip name-server 203.135.0.2

!

ip dhcp-server 172.16.1.2

isdn switch-type basic-net3

isdn voice-call-failure 0

!

!

!

!

!

interface FastEthernet0/0

ip address 202.125.132.41 255.255.255.248

no ip directed-broadcast

ip nat inside

duplex auto

speed auto

!

interface BRI0/0

ip address negotiated

ip helper-address 172.16.1.2

no ip directed-broadcast

encapsulation ppp

isdn switch-type basic-net3

peer default ip address dhcp

ppp pap sent-username kiit07@isdn.cyber.net.pk password 7 060B0E28407102100C03

ppp multilink

!

interface Serial0/0

ip address 202.163.110.22 255.255.255.252

no ip directed-broadcast

encapsulation ppp

shutdown

!

interface FastEthernet0/1

ip address 172.16.254.252 255.255.0.0

ip helper-address 172.16.1.2

no ip directed-broadcast

ip nat inside

duplex auto

speed auto

!

interface Serial0/1

ip address 202.125.131.22 255.255.255.252

no ip directed-broadcast

ip nat outside

!

interface Dialer0

no ip address

no ip directed-broadcast

no cdp enable

!

ip classless

ip route 0.0.0.0 0.0.0.0 Serial0/1

no ip http server

!

snmp-server engineID local 0000000902000004278EE7A0

snmp-server community

snmp-server community snmp view v1default RO

snmp-server enable traps snmp

snmp-server host

!

line con 0

password

transport input none

line aux 0

line vty 0 1

password xxxxxxxxxxxxxxxxx

login

line vty 2 4

login

!

no scheduler allocate

end

kiit#

3 Replies 3

jduffek
Level 1
Level 1

If you ran...

debug ppp nego

debug dchp detail

...you would see that there is a problem. Take my suggestion, as given to you earlier, to make your bri interface unnumbered to your ethernet.

Josh

zahmed
Cisco Employee
Cisco Employee

Thats a bit unusual. Is this config from the dialer router or the dialed router? You have "ip address negotiated" on its BRI which makes it look like as if its the dialer side and looking for an ip address from the dialed router but then you also have "peer default ip address dhcp" which makes it look like a

dialed router which will assign an ip address to the

dialer through the DHCP server at 172.16.1.2. Regardless you are missing "ppp authen pap callin" on BRI as well as "dialer-group 1" and then "dialer-

list 1 protocol ip permit" in global.

Thanks for your support but the things you pointed after that its also not working.

I mean when clients form isdn modem dials router its accecpts the username and passwords but not be able to ping the internal network.

Even clients gets an ip address form internal dhcp server.