08-30-2011 05:03 AM - edited 03-04-2019 01:27 PM
Hi,
I write this because i'm puzzling myself for a few days now trying to find a way to configure my 851 for home use.
My internet provider use PPPoE with PAP and althrough I found many configuration options they all are incomplete...or i cant find the logic behind those commands.
First of all I need to say what I need:
1. Configurate my int Fa4 (WAN) with pppoe so when i insert my ISP cable in it it will negotiate and take IP.
2. Configurate DHCP on LAN (Fa0-3) so that when I insert my PC it will take a fake IP.
Here is the place where i found some conf examples: http://www.cisco.com/en/US/docs/routers/access/800/850/software/configuration/guide/pppoenat.html and I have some questions:
1. MTU - Should I use the 1492 value or the "pppoe-client ppp-max-payload 1500"?
2. ip route 10.10.25.2 255.255.255.255 dialer 0 - How can i set an IP route when my connexion informations only come after i connect? (Because is PPPoE)???
3. I cant configurate the DHCP because I dont know the default route, I dont know the DNS, and i dont know the default gateway because I dont know them due to PPPoE !!!
Please help me because I dont know what to do whit it.
Thank you
Solved! Go to Solution.
08-30-2011 10:17 AM
Hi,
ip subnet-zero
no ip routing change it to ip routing
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.0.1 192.168.0.10
interface Dialer0
ip address negotiated
ip mtu 1492 You're missing the ip nat outside command
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication pap
ppp pap sent-username ************ password **************!
Regards.
Alain.
08-30-2011 10:53 AM
I have repaired that Cadet Alain earlyer with the help of Mr. Peter Paluch who posted me the cfg commands, but i still forgot something . I really do appologise for my stuborness but i'm kinda new with the Cisco configurations,but I want to learn because is really nice, I like it!
Tank you
Now i'm closer than ever, the DHCP is working, and even the led for PPP is now on, but something still dosent tie up, maybe is because i missed that command.
03-20-2013 08:15 AM
Hello,
I'm trying to use this running config to a 851 router but i get an error to this line:
Paltinis(config)#no ip dhcp use vrf connected
^
% Invalid input detected at '^' marker.
Paltinis(config)#no ip dhcp use vrf connected
^
% Invalid input detected at '^' marker.
and the confir dose not work.
Here is my running config someone can helpme to see what i do wrong.
Thank you.
Paltinis#sh running-config
Building configuration...
Current configuration : 1654 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Paltinis
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$T/5A$rNrZUOri4.JHzFBb7vB.21
enable password admins
!
no aaa new-model
!
!
dot11 syslog
no ip dhcp use class
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.0.1 192.168.0.10
!
ip dhcp pool LAN-Palt
import all
network 192.168.0.0 255.255.255.0
default-router 192.168.0.1
lease infinite
!
!
ip cef
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
username admin password 0 admin
!
!
archive
log config
hidekeys
!
!
!
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface FastEthernet4
no ip address
shutdown
duplex auto
speed auto
pppoe enable group global
pppoe-client dial-pool-number 1
!
interface Vlan1
ip address 192.168.0.1 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
!
interface Dialer0
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
no cdp enable
ppp pap sent-username ************* password ***************
ppp ipcp dns request accept
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer0
!
no ip http server
no ip http secure-server
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 permit 192.168.0.0 0.0.0.255
dialer-list 1 protocol ip permit
!
control-plane
!
!
line con 0
no modem enable
line aux 0
line vty 0 4
password admin
login
!
scheduler max-task-time 5000
end
Paltinis#
03-21-2013 08:55 AM
I have found out this post
http://808techblog.com/netflow/2008/02/ saying that there is a problem in diffrent software versions. I checked and my router has Version 12.4(15)T6. Please tell me if i need to make downgrade in order to work.
03-22-2013 09:00 PM
Hello Adrian,
I do not think you need to downgrade your IOS version. Also, those two lines (no ip dhcp use class and no ip dhcp use vrf connected) can be ignored and skipped, as they are not important for your basic setup. The configuration should work nicely without these two lines.
So what exactly does not work for you?
Best regards,
Peter
P.S.: It would be more appropriate to create a new, separate thread for your issue, instead of discussing this in an existing thread.
03-23-2013 11:09 AM
Thanks for your reply, I did opend a new thread here:
https://supportforums.cisco.com/message/3889331#3889331 and I got it working now. It looks like it was the Int Fa4 disabled...:) I was prepared to downgrade it to an older version but than Mr. Richard Burts told me to check the interface.
Thank you again for the reply.
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