05-23-2008 03:56 PM - edited 03-03-2019 10:04 PM
I'm having problems with a Cisco 876 router (ADSL over ISDN Anex B, 1024/256 Kbp/s). I'm try to configure ADSL connection with public IP address from ISP. My configuration is bad, not work's. If you have any good suggestion write to me. I not assured how to configure ATM0, Dialer0, NAT and others interfaces.
05-23-2008 04:12 PM
ISP support LLC, GDMT ADSL (ITU G.992.1/G.992.2) encapsulation, pvc 8/35. ISP have Ericsson DSLAM equipment. If you have same configuration post it!!! I'm so tired and not have solutions for this problems!
05-24-2008 05:16 AM
First of all check "show isdn status" to see if the link goes up.
Then specify if your ISP is using PPPoE, bridged 1483 or what else, and post your configuration.
05-25-2008 10:40 PM
This is my config:
Current configuration : 4050 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname xxxx
!
boot-start-marker
boot-end-marker
!
logging buffered 51200 warnings
enable secret 5 xxxx
!
no aaa new-model
!
resource policy
!
ip cef
!
!
!
!
no ip domain lookup
ip name-server xxx.xxx.xxx.xxx
ip name-server xxx.xxx.xxx.xxx
!
!
!
!
username xxxx privilege 15 password 7 xxxxxxx
!
!
interface Loopback0
no ip address
!
interface BRI0
no ip address
encapsulation hdlc
shutdown
!
interface ATM0
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0.1 point-to-point
description ADSL 1024/256
ip address xxx.xxx.xxx.xxx 255.255.255.0 (Public, static IP from ISP)
ip access-group 100 in
ip nat outside
ip virtual-reassembly
no snmp trap link-status
pvc 8/35
encapsulation aal5snap
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
ip address xxx.xxx.xxx.xxx 255.255.255.0 (Private IP)
ip access-group 100 in
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1412
!
ip route 0.0.0.0 0.0.0.0 xxx.xxx.xxx.xxx (Gateway from ISP)
!
!
no ip http server
ip http authentication local
ip http secure-server
ip nat inside source list 100 interface Vlan1 overload
ip nat inside source static xxx.xxx.xxx.xxx (Private IP) xxx.xxx.xxx.xxx (Public, static IP from ISP)
!
access-list 100 permit ip any any
no cdp run
!
!
!
!
control-plane
!
!
line con 0
no modem enable
line aux 0
access-class 23 in
privilege level 15
login local
transport input telnet ssh
line vty 0 4
login
line vty 5 15
access-class 23 in
privilege level 15
login local
transport input telnet ssh
!
scheduler max-task-time 5000
!
webvpn context Default_context
ssl authenticate verify all
!
no inservice
!
end
05-25-2008 11:26 PM
This is status interfaces:
xxxx#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0 unassigned YES unset up up
FastEthernet1 unassigned YES unset up down
FastEthernet2 unassigned YES unset up down
FastEthernet3 unassigned YES unset down down
BRI0 unassigned YES NVRAM administratively down down
BRI0:1 unassigned YES unset administratively down down
BRI0:2 unassigned YES unset administratively down down
ATM0 unassigned YES NVRAM up up
ATM0.1 xxx.xxx.xxx.xxx (Public ISP from ISP) YES NVRAM up up
Vlan1 xxx.xxx.xxx.xxx (Private IP) YES NVRAM up up
Loopback0 unassigned YES NVRAM up up
NVI0 unassigned NO unset up up
05-26-2008 01:25 AM
As mentoned above:
First of all check "show isdn status" to see if the link goes up.
Then specify if your ISP is using PPPoE, bridged 1483 or what else.
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