Re: Need help configuring DDR with PTSN

asmith · ‎04-29-2005

Ok, i've gone through a ton of cisco doc's, tried everything they've stated, now i'm lost and clueless???

can anybody look at my config, and tell me what to do?

all i need is for 1760-V to dial 1-800 number when t-1 goes down...

thanks in advance

AL

interface Serial0/0:0.1 point-to-point

backup delay 15 15

backup interface Async5

ip address 10.0.129.2 255.255.255.252

frame-relay interface-dlci 1000

class map_vofr

vofr data 4 call-control 5

!

interface Async5

ip unnumbered Serial0/0:0.1

encapsulation ppp

dialer in-band

dialer string 1866xxxxxxx modem-script cisco-default

dialer-group 1

async mode interactive

Richard Burts · ‎04-29-2005

With backup interface on serial0/0:0.1 the async 5 will not attempt to dial (and will not answer a call) until there is a real problem on the serial. (shutdown of the interface will not trigger an attempt to dial - it must be a real failure of the primary interface) So how have you attempted to test this?

Also it would be more helpful if you could be more specific about what you have tried and what the symptoms are of it not working.

There is a possibility that there is a problem with dialer-list 1 which should correspond to dialer-group 1 on the async interface. Would you post the dialer-list - and if there is an associated access-list post it also.

I note that there is no authentication on the async interface. Most dialing interfaces do some form of authentication. But since I am not sure that it is causing the problems that you are having, we will wait to discuss this till the other problems are solved.

HTH

Rick

HTH

Rick

asmith · ‎04-29-2005

Rick, thanls for the reply...

All i've done so far is to try and config as per documents from cisco... I have 1760 setup with loop t-1 plug, so i pull connection to simulate drop...

Basically i copied from documents i've read, which were spotty at best... so i'm just trying to start from scratch, all i want to accomplish is for 1760 with wic-1am modem card, to dial corporate number to reconnect to lan when circuit goes down...

so anything from scratch would help...

AL

asmith · ‎04-29-2005

here is debug...

debug dialer

Dial on demand events debugging is on

store129#

00:26:21: Di1: No free dialer - starting fast idle timer

00:26:26: Di1: No free dialer - starting fast idle timer

00:26:27: As5 DDR: re-enable timeout

00:26:30: As5 DDR: Dialing cause ip (s=10.0.129.2, d=224.0.0.10)

00:26:30: As5 DDR: Attempting to dial 1800

00:26:30: CHAT5: Attempting async line dialer script

00:26:30: CHAT5: no matching chat script found for 1800

00:26:30: CHAT5: Dialing using Modem script: d0efault-d0ials0cript &

System script: none

00:26:30: CHAT5: process started

00:26:30: CHAT5: Asserting DTR

00:26:30: CHAT5: Chat script d0efault-d0ials0cript started

00:26:30: Di1: No free dialer - starting fast idle timer

00:26:35: CHAT5: Chat script d0efault-d0ials0cript finished, status

= Connection timed out; remote host not responding

00:26:35: As5 DDR: disconnecting call

00:26:35: Di1: No free dialer - starting fast idle timer

00:26:40: Di1: No free dialer - starting fast idle timer

00:26:44: Di1: No free dialer - starting fast idle timer

00:26:48: Di1: No free dialer - starting fast idle timer

00:26:50: As5 DDR: re-enable timeout

00:26:53: As5 DDR: Dialing cause ip (s=10.0.129.2, d=224.0.0.10)

00:26:53: As5 DDR: Attempting to dial 1800

00:26:53: CHAT5: Attempting async line dialer script

00:26:53: CHAT5: no matching chat script found for 1800

00:26:53: CHAT5: Dialing using Modem script: d0efault-d0ials0cript &

System script: none

00:26:53: CHAT5: process started

00:26:53: CHAT5: Asserting DTR

00:26:53: CHAT5: Chat script d0efault-d0ials0cript started

00:26:53: Di1: No free dialer - starting fast idle timer

00:26:58: Di1: No free dialer - starting fast idle timer

00:26:58: CHAT5: Chat script d0efault-d0ials0cript finished, status

= Connection timed out; remote host not responding

00:26:58: As5 DDR: disconnecting calldebug dialer

00:27:03: Di1: No free dialer - starting fast idle timer

All possible debugging has been turned off

store129#

AL

Richard Burts · ‎04-30-2005

Al

Posting the output from your debug is helpful. For one thing it shows that the router is attempting to dial, which confirms that it has recognized a failure of the primary interface and is using the backup. This answers one of the questions that I asked.

The debug also shows that it is attempting to dial because it has an EIGRP update to send. It has an EIGRP update because the async interface is unnumbered using the address of the serial subinterface which does match an EIGRP network statement. You may decide later whether you want to run EIGRP over the backup interface, but for now I would like to get it out of the way because it complicates what we are trying to do (I am not sure what is causing the no free dialer message but it may be due in part to trying to use the dialer for so many update/hello messages). So please put a passive-interface async5 under your EIGRP process. Or in the access list which is used by the dialer list put deny up any host 224.0.0.10.

I am wondering about the message:

no matching chat script found for 1800

the 1800 does not seem to match anything in the part of the config that you posted. Would you post a more complete part of the config which might help us figure that this relates to?

HTH

Rick

HTH

Rick

asmith · ‎04-30-2005

Rick, thanks for the help... got totally frustrated with this, wiped out config and i'm starting from scratch with this DDR... as i kept researching and finding doc's saying try this way... so i'm starting all over from scratch...

AL

asmith · ‎04-30-2005

Rick here is current config and debug..

hostname Store129

!

enable secret 5

!

username backup password 0 connection

tdm clock T1 0/0 both export line

ip subnet-zero

!

ip dhcp excluded-address 172.16.129.1 172.16.129.100

ip dhcp excluded-address 172.16.129.106 172.16.129.254

!

ip dhcp pool 0

network 172.16.129.0 255.255.255.0

default-router 172.16.129.254

!

chat-script dialup ABORT ERROR "" "ATDT \T" TIMEOUT 40 CONNE

CT

!

controller T1 0/0

framing esf

linecode b8zs

channel-group 0 timeslots 1-2

!

interface Loopback0

ip address 172.16.229.254 255.255.255.0

!

interface Loopback1

ip address 172.16.228.253 255.255.255.255

!

interface FastEthernet0/0

ip address 172.16.129.254 255.255.255.0

speed auto

!

interface Serial0/0:0

no ip address

encapsulation frame-relay

frame-relay traffic-shaping

!

interface Serial0/0:0.1 point-to-point

backup delay 15 15

backup interface Async5

ip address 10.0.129.2 255.255.255.252

frame-relay interface-dlci 1000

class map_vofr

vofr data 4 call-control 5

!

interface Async5

no ip address

encapsulation ppp

dialer in-band

dialer pool-member 2

async default routing

no fair-queue

!

interface Dialer1

ip unnumbered Loopback1

encapsulation ppp

dialer pool 2

dialer idle-timeout 300

dialer string 1800xxxxxxx

dialer hold-queue 50

dialer-group 1

no peer default ip address

no cdp enable

ppp authentication chap

ppp chap hostname perle

ppp chap password 7

!

router eigrp 100

network 10.0.0.0

network 172.16.0.0

no auto-summary

no eigrp log-neighbor-changes

!

ip classless

no ip http server

ip http access-class 1

ip pim bidir-enable

!

map-class frame-relay map_vofr

frame-relay cir 64000

frame-relay bc 640

frame-relay mincir 64000

no frame-relay adaptive-shaping

frame-relay fair-queue

frame-relay voice bandwidth 16000

frame-relay fragment 80

dialer-list 1 protocol ip permit

!

call rsvp-sync

!

voice-port 2/0

echo-cancel coverage 32

!

voice-port 2/1

echo-cancel coverage 32

!

dial-peer cor custom

dial-peer voice 1 pots

destination-pattern 7129

port 2/0

!

dial-peer voice 2 vofr

destination-pattern 7...

session target Serial0/0:0 1002

!

dial-peer voice 3 vofr

destination-pattern 5...

session target Serial0/0:0 1002

!

dial-peer voice 4 vofr

destination-pattern 3..

session target Serial0/0:0 1002

!

line con 0

line aux 0

script dialer cisco_101

modem InOut

transport input all

line vty 0 4

password

login

Dial on demand events debugging is on

Store129#

00:51:22: As5 DDR: re-enable timeout

00:51:22: DDR: Dialing failed, 2 packets unqueued and discar

ded

00:51:25: As5 DDR: rotor dialout [priority]

00:51:25: As5 DDR: Dialing cause ip (s=172.16.228.253, d=224

.0.0.10)

00:51:25: As5 DDR: Attempting to dial 1800xxxxxxx

00:51:25: CHAT5: Attempting async line dialer script

00:51:25: CHAT5: no matching chat script found for 1800

00:51:25: CHAT5: Dialing using Modem script: d0efault-d0ials

0cript & System script: none

00:51:25: CHAT5: process started

00:51:25: CHAT5: Asserting DTR

00:51:25: CHAT5: Chat script d0efault-d0ials0cript started

00:51:30: CHAT5: Chat script d0efault-d0ials0cript finished,

status = Connection timed out; remote host not responding

00:51:30: As5 DDR: disconnecting call

00:51:45: As5 DDR: re-enable timeout

00:51:45: DDR: Dialing failed, 2 packets unqueued and discarded

asmith · ‎04-30-2005

Here is another debug, couldn't fit in last posting..

Store129#debug modem

Modem control/process activation debugging is on

Store129#

01:01:12: TTY5: restoring DTR

01:01:12: TTY5: Set DTR to 1

01:01:24: CHAT5: Attempting async line dialer script

01:01:24: CHAT5: process started

01:01:24: CHAT5: Asserting DTR

01:01:24: TTY5: Set DTR to 1

01:01:29: TTY5: Line reset by "Async dialer"

01:01:29: TTY5: Modem: (unknown)->HANGUP

01:01:29: TTY5: no timer type 0 to destroy

01:01:29: TTY5: no timer type 1 to destroy

01:01:29: TTY5: no timer type 3 to destroy

01:01:29: TTY5: no timer type 4 to destroy

01:01:29: TTY5: no timer type 2 to destroy

01:01:29: TTY5: dropping DTR, hanging up

01:01:29: TTY5: Set DTR to 0

01:01:29: tty5: Modem: HANGUP->(unknown)

01:01:34: TTY5: restoring DTR