Re: C887 adsl configuration

afaye1980 · ‎08-02-2013

Dear every body,

i am a biginner in cisco, i am trying to configure an adsl connection on a cisco 887,but i stuck

i will appreciate your help

here is the sh run

wampo#sh run

Building configuration...

Current configuration : 3845 bytes

!

! Last configuration change at 12:27:01 UTC Fri Aug 2 2013

version 15.2

no service pad

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname wampo

!

boot-start-marker

boot-end-marker

!

no logging buffered

enable secret 5 $1$QyfG$jZ54E5XQIVqGLSRLqiMng.

enable password xxxxxxx

!

no aaa new-model

memory-size iomem 10

!

crypto pki trustpoint TP-self-signed-180731608

enrollment selfsi

subject-name cn=IOS-Self-Signed-Certificate-180731608

revocation-check none

rsakeypair TP-self-signed-180731608

!

crypto pki certificate chain TP-self-signed-180731608

certificate self-signed 01

30820229 30820192 A0030201 02020101 300D0609 2A864886 F70D0101 05050030

30312E30 2C060355 04031325 494F532D 53656C66 2D536967 6E65642D 43657274

quit

!

ip dhcp excluded-address 10.99.51.1 10.99.51.10

ip dhcp excluded-address 10.99.51.100 10.99.51.254

!

ip dhcp pool dhcppool1

import all

network 10.99.51.0 255.255.255.0

dns-server 213.154.95.126 213.154.64.13

!

ip cef

no ipv6 cef

!

multilink bundle-name authenticated

license udi pid CISCO887VA-SEC-K9 sn FCZ1719C3EQ

!

username afaye privilege 15 secret 4 SMZzYgSsGZk9/MyjLnM0C0lJGVQpcrrU1zcxGMEqr9U

!

controller VDSL 0

!

interface Ethernet0

no ip address

!

interface ATM0

no ip address

no atm ilmi-keepalive

!

interface ATM0.1 point-to-point

ip dhcp client client-id Dialer3

pvc 0/35

pppoe-client dial-pool-number 2

!

interface FastEthernet0

no ip address

!

interface FastEthernet1

no ip address

shutdown

!

interface FastEthernet2

no ip address

shutdown

!

interface FastEthernet3

no ip address

shutdown

!

interface Vlan1

ip address 10.99.51.2 255.255.255.0

ip nat inside

ip virtual-reassembly in

ip tcp adjust-mss 1412

!

interface Dialer0

no ip address

shutdown

!

interface Dialer1

no ip addre

shutdown

!

interface Dialer2

no ip address

shutdown

!

interface Dialer3

ip address negotiated

ip mtu 1452

ip nat outside

ip virtual-reassembly in

encapsulation ppp

dialer pool 2

dialer-group 3

ppp authentication chap callin

ppp chap hostname warmer2-adsl

ppp chap password 0 wwfwamer

!

ip forward-protocol nd

ip http server

ip http authentication local

ip http secure-server

ip http timeout-policy idle 600 life 86400 requests 10000

!

ip nat inside source list 1 interface Dialer1 overload

ip route 0.0.0.0 0.0

!

dialer-list 1 protocol ip permit

dialer-list 2 protocol ip permit

dialer-list 3 protocol ip permit

!

control-plane

!

line con 0

no modem enable

line aux 0

line vty 0 4

privilege level 15

password panda1

login local

transport input telnet ssh

!

end

Mithun Puttamadaiah · ‎08-02-2013

Hello Aliou,

First of all, kindly let me know what exactly is the issue.

We need to understand if the DSL line is failing to train up (Layer 1 i.e Controller is UP or DOWN) or is it the Layer 2 (PPP) that is failing.

However, to start with, I will provide you with the configuration to set-up the PPPOA connection from scratch.

1. Sample configuration to set-up the PPPOA connection,

a. Configure Ingress (LAN) interface:

Router(config)#interface Gig 0/0 (Any Ethernet/LAN facing port)

Router(config-if)#description internal interface

Router(config-if)#ip address x.x.x.x x.x.x.x

Router(config-if)#ip nat inside

Router(config-if)#no shut

b. Configure Egress(WAN) interface:

Router(config)#interface ATM0

Router(config-if)#no ip address

Router(config-if)#no shut

Router(config-if)#no atm ilmi-keepalive

Router(config-if)#dsl operating-mode auto

Router(config)#interface ATM0.1 point-to-point

Router(config-subif)#pvc 0/38

Router(config-if-atm-vc)# encapsulation aal5mux ppp dialer

Router(config-if-atm-vc)# dialer pool-member 1

Router(config-if-atm-vc)# exit

c. Configure Dialer interface:

Router(Config)#interface dialer1

Router(Config)#ip address negotiated

Router(Config)#ip mtu 1492

Router(Config)#ip nat outside

Router(Config)#encapsulation ppp

Router(Config)#dialer pool 1

Router(Config)#dialer-group 1

Router(Config)#ppp authentication chap pap callin

Router(Config)#ppp chap hostname xxxxx

Router(Config)#ppp chap password xxxxx

Router(Config)#end

Once you configure the above, plug in the DSL line onto the ATM port and wait for 5 minutes to see the DSL train up.

Once the DSL trains up, if everything goes fine, you should be able to see an IP address on the Dialer interface.

Use the command "Show ip int brief" to check whether the Dialer interface has an IP address or not.

In case, if the Dialer interface fails to get an Ip address, we should then start investigating the cause of failure.

Use the below commands and provide me the outputs in case of failure,

1. Show dsl int atm0 (if this does not work use "show controller vdsl 0"

This would tell us whether teh DSL line has trained UP or not. In a working state, you should be able to see "MODEM in SHOWTIME" state.

In case, if the Controller is UP and still the Dialer interface has no IP address (if & only if the you are negotiating an IP address from the ISP), it means the DSL has trained UP successfully but failed to establish a connection due to a possible failure in Layer 2.

2. To troubleshoot Layer 2, we need to run the following debugs,

Ensure you log the debugging to the buffer,

(config)#no logging console

(Config)#logging buffered debug

(config)#logging buffered 12288

(config)# exit

In privilege mode, enable the debugs.

debug ppp negotiation

debug ppp authentication

debug ppp error

Try the above and let me know the outcome

Cheers,

Mithun

afaye1980 · ‎08-03-2013

Hi Mithun

Thanks a lot for your reply

I did not try your solution yet

But just to precise that i did not use the interface Gig 0/0 , i ve used Vlan1 with ip address 10.99.51.2 , to connect to the pc

For the pvc, it s 0/35

the ppp is alos pppoe insted of pppoa , it s given by ISP

After my 1st config, it did use the dialer3 as dialer interface and atm0.1 as atm interface

I did get a public ip address on dialer3 when i type sh ip int brief command, that mean that dialer3 is getting ip addres from isp

i can ping from console this public address too, and the vlan1 address also

but if i ping another public ip, like 213.154.95.126 or google.com; it fails

I will try your commands, and let your know

Mithun Puttamadaiah · ‎08-03-2013

Hello Aliou,

Like you've mentioned, getting an IP address on the Dialer interface simply means that the DSL has trained UP and connection has been successfully established.

Now, in order to reach out to any IP address on the internet, make sure you have the below configurations on the device,

1. (config)# ip route 0.0.0.0 0.0.0.0 Dialer 3 (Default route)

With this, you should be able to reach other public IP addresses.

2. in order to be able to ping a website like "www.google.com", your router should be able to resolve this to an IP address, for which we need to configure a DNS server and in the config below, i'm using the public DNS 4.2.2.2

(config)# ip domain-lookup

(config)# ip name-server 4.2.2.2

With these commands in place, you should be able to ping any Public address or any domain.

Cheers,

Mithun

afaye1980 · ‎08-05-2013

Hi Mithun,

i do try but i still can't any public ip address

here s the outcome of the : i ve used the "!!" to comment my understanding!!

show controller vdsl 0

wampo#sh controller vsdl 0

Controller VDSL 0 is UP

Daemon Status: Up

XTU-R (DS) XTU-C (US)

Chip Vendor ID: 'BDCM' 'BDCM'

Chip Vendor Specific: 0x0000 0xA341

Chip Vendor Country: 0xB500 0xB500

Modem Vendor ID: 'CSCO' ' '

Modem Vendor Specific: 0x4602 0x0000

Modem Vendor Country: 0xB500 0x0000

Serial Number Near: FCZ1719C3EQ 887VA-S 15.2(4)M

Serial Number Far:

Modem Version Near: 15.2(4)M

Modem Version Far: 0xa341

Modem Status: TC Sync (Showtime!)

DSL Config Mode: AUTO

Trained Mode: G.992.1 (ADSL) Annex A

TC Mode: ATM

Selftest Result: 0x00

DELT configuration: disabled

DELT state: not running

Trellis: ON ON

SRA: disabled disabled

SRA count: 1 0

Bit swap: enabled enabled

Bit swap count: 0 1

Line Attenuation: 47.5 dB 31.5 dB

Signal Attenuation: 47.5 dB 0.0 dB

Noise Margin: 21.3 dB 30.0 dB

Attainable Rate: 3708 kbits/s 1204 kbits/s

Actual Power: 16.5 dBm 11.9 dBm

Total FECC: 1144 0

Total ES: 39 0

Total SES: 35 0

Total LOSS: 5 0

Total UAS: 89 89

Total LPRS: 0 0

Total LOFS: 27 0

Total LOLS: 0 0

Full inits: 4

Failed full inits: 0

Short inits: 0

Failed short inits: 0

odem PHY Version: A2pv6C035j.d23j

Vendor Version: Ap6v35j.23j 68

DS Channel1 DS Channel0 US Channel1 US Channel0

Speed (kbps): 0 1024 0 256

SRA Previous Speed: 0 1024 0 0

Previous Speed: 0 1024 0 256

Total Cells: 0 7626695 0 0

User Cells: 0 932 0 0

Reed-Solomon EC: 0 0 0 0

CRC Errors: 0 1485 0 0

Header Errors: 0 0 0 0

Interleave (ms): 0.00 16.00 0.00 16.00

Actual INP: 0.00 4.21 0.00 5.81

Training Log : Stopped

Training Log Filename : flash:vdsllog.bin

wampo# sh ip int brief

col

ATM0 unassigned YES NVRAM up up

ATM0.1 unassigned YES unset up up

Dialer0 unassigned YES TFTP administratively down down

Dialer1 unassigned YES TFTP administratively down down

Dialer2 unassigned YES TFTP administratively down down

Dialer3 172.31.38.183 YES IPCP up up

Ethernet0 unassigned YES NVRAM down down

FastEthernet0 unassigned YES unset up up

FastEthernet1 unassigned YES unset administratively down down

FastEthernet2 unassigned YES unset administratively down down

FastEthernet3 unassigned YES unset administratively down dow

NVI0 unassigned YES unset administratively down down

Virtual-Access1 unassigned YES unset up up

Virtual-Access2 unassigned YES unset up up

Vlan1 10.99.51.2 YES manual up up

-----------------------------------------------------------

wampo#sh ip route

Codes: L - local, 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, H - NHRP, l - LISP

+ - replicated route, % - next hop override

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

S* 0.0.0.0/0 is directly connected, Dialer3

10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks

C 10.99.51.0/24 is directly connected, Vlan1

L 10.99.51.2/32 is directly connected, Vlan1

172.31.0.0/32 is subnetted, 2 subnets

C 172.31.32.1 is directly connected, Dialer3

C 172.31.38.183 is directly connected, Dialer3

!! i think the 2nd line(10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks)

!!must be delete, but i don't know how,can you give the command

!! i don't understand also the 4th line(L 10.99.51.2/32 is directly connected, Vlan1) is it necessary to have it

!! is the gateway correct !!

------------------------

wampo#sh ip access-list

Extended IP access list 101

10 permit ip 10.99.51.0 0.0.0.255 any (6001 matches)

!! we use in the LAN this ip address 10.99.51.0 255.255.255.0!! check if this access-list is corect!!

--------------------------------------

wampo#sh ip name-server

213.154.95.126

!!this the dns we use from isp on other routers to connect to the internet!!

Regards