I have a 3640 with an E1 PRI module and 12 port digimodem. The PRI is used primarily for DDR with remote BRI routers, it has also been configured for use with a digimodem module for analogue dial-in. My problem is that I’ve never configured analogue dial-in, it was there before I started, and now need to make some changes to it.
At the moment an analogue dial-in user will receive a dynamically assigned IP address from our DHCP servers. Ideally I’d like to retain this while allowing specific usernames to use an allocated, fixed, IP address. If this isn’t possible I’d like to allocate all dial-in usernames a static IP address, and remove DHCP.
Please give me some pointers on how I could achieve this, thanks in advance.
Here’s a sample of my config:
IOS 12.2(7)
username dialuser1 password 7 xxxxxxxxxxxxx
username dialuser2 password 7 xxxxxxxxxxxxx
username isdn1 password 7 xxxxxxxxxxxxx
username isdn2 password 7 xxxxxxxxxxxxx
!
!
ip domain-name domain.co.uk
ip name-server 10.0.1.156
ip name-server 10.0.1.151
ip name-server 10.0.1.154
!
ip address-pool dhcp-proxy-client
ip dhcp-server 10.0.1.151
ip dhcp-server 10.0.1.154
!
!
isdn switch-type primary-net5
chat-script cisco-default ABORT ERROR "" "AT" OK "ATDT\T" TIMEOUT 60 CONNECT
chat-script rtp ABORT ERROR ABORT BUSY "" "AT" OK "ATDT \T" TIMEOUT 45 CONNECT \c
chat-script offhook "" "ATH1" OK
call rsvp-sync
!
controller E1 1/0
pri-group timeslots 1-31
!
!
!
interface Ethernet0/0
ip address 192.168.1.14 255.255.255.0 secondary
ip address 10.0.1.1 255.255.0.0
full-duplex
service-policy output voip
!
...serial interfaces...
!
interface Group-Async1
ip unnumbered Ethernet0/0
encapsulation ppp
dialer in-band
dialer-group 1
async mode interactive
no peer default ip address
ppp callback accept
ppp authentication chap pap
group-range 65 76
!
interface Dialer1
description ISDN connection to isdn1
bandwidth 128
ip address 192.168.255.5 255.255.255.252
encapsulation ppp
dialer pool 1
dialer remote-name isdn1
dialer idle-timeout 360
dialer string xxxxxxxxxxxxx
dialer-group 1
no peer default ip address
pulse-time 0
ppp authentication chap
ppp multilink
!
interface Dialer2
description ISDN connection to isdn2
bandwidth 64
ip address 192.168.255.9 255.255.255.252
encapsulation ppp
dialer pool 1
dialer remote-name isdn2
dialer idle-timeout 360
dialer string xxxxxxxxxxxxx
dialer-group 1
no peer default ip address
pulse-time 0
ppp authentication chap
!
.... more dialer interfaces for ISDN DDR ....
!
ip route 10.1.0.0 255.255.0.0 Dialer1
ip route 192.168.13.0 255.255.255.0 Dialer2
... more routes ...
!
dialer-list 1 protocol ip permit
!
line 65 76
session-timeout 120
script modem-off-hook offhook
script callback rtp
login local
modem InOut
modem autoconfigure type mica
transport input all
autoselect during-login
autoselect ppp
callback forced-wait 5
