Going bald! 2501 with Analog dialup 1

[Sharkbyte33]

I've got a 2501 Router and 2 modems which I need to use for dial-up to the internet. The second modem isnt used yet, as I cant get #1 to dial properly.

Modem #1 is on Serial 0 and needs to speak to the router at 115,200 8,n,1.

Here is the config file:


!
version 12.2
no parser cache
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router_A
!
enable secret 5 $1$Cjfd$hesFqPk1WkBBsc9LXzhZ/0
enable password park
!
ip subnet-zero
!
!
!
!
interface Ethernet0
ip address 10.1.0.1 255.255.255.0
ip nat inside
no cdp enable
no mop enabled
!
interface Serial0
bandwidth 64
no ip address
encapsulation ppp
dialer in-band
dialer pool-member 1
lat enabled
pulse-time 1
no cdp enable
mop enabled
ppp authentication pap chap optional
!
interface Serial1
no ip address
encapsulation ppp
shutdown
lat enabled
no cdp enable
mop enabled
ppp authentication pap chap optional
!
interface Dialer1
description PRIMARY CONNECTION TO INTERNET
ip address negotiated
ip nat outside
encapsulation ppp
carrier-delay 10
dialer pool 1
dialer remote-name ISP
dialer idle-timeout 180
dialer string "#777"
dialer-group 1
autodetect encapsulation ppp
no cdp enable
ppp authentication chap pap callin
ppp chap hostname 7808812642@1x.telusmobility.com
ppp chap password 0 10801615443
ppp pap sent-username 7808812642@1x.telusmobility.com password 0 10801615443
!
interface Dialer2
description SECONDARY CONNECTION TO INTERNET
ip address negotiated
ip nat outside
encapsulation ppp
shutdown
dialer pool 1
dialer remote-name Telus2
dialer idle-timeout 180
dialer string "#777"
dialer-group 2
no cdp enable
ppp authentication chap pap callin
ppp chap hostname 7808812643@1x.telusmobility.com
ppp chap password 0 10801615557
ppp pap sent-username 7808812643@1x.telusmobility.com password 0 10801615557
!
ip nat inside source list 101 interface Dialer1 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
no ip http server
ip pim bidir-enable
!
access-list 101 permit ip 10.1.0.0 0.0.0.255 any
dialer-list 1 protocol ip permit
no cdp run
!
!
line con 0
line aux 0
line vty 0 4
password cisco
login
!
end



If I tell the router to ping something, (with debuging on) here is the result:

00:16:36: Se0 DDR: re-enable timeout
Router_A#ping 1.2.3.4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.2.3.4, timeout is 2 seconds:

00:16:46: Se0 DDR: rotor dialout [priority]
00:16:46: Se0 DDR: Dialing cause ip (s=10.1.0.1, d=1.2.3.4)
00:16:46: Se0 DDR: Attempting to dial #777.....
Success rate is 0 percent (0/5)
Router_A

I KNOW the modems are fine, because I've tried 3 different types, and they all work when I attach them to a pc.

I know I've missed something stupid - please tell me what it is!

Dave

 

[BuckWeet]

Well for one, i'm not sure if the 2500's serial ports can do async..

You could do this task via the AUX port though, it should be line number 65

so go "int asynch 65" and then do your dialer commands under it..


BuckWeet

 

[Sharkbyte33]

The aux port isnt fast enough - 38400 is the fastest I can set it... I have to have 115200

 

[Sharkbyte33]

Here is what cisco have to say about the serial ports on my 2501:

The synchronous serial interface supports the following standards in data terminal equipment (DTE) and data communications equipment (DCE) mode: EIA/TIA-232, EIA/TIA-449, V.35, and X.21. The EIA-530 standard is supported in DTE mode only.


Is not a standard modem TIA-232 and/or V.35?

Thanks!

 

[pmesjar]

As BuckWeet said, for dialing you need asynchronous interfaces and serial interfaces on 2500 series routers cannot do "physical-layer async", so you cannot do what you need. Your only option on 2500 is to go with AUX port.

Peter Mesjar
CCNP, A+ certified
pmesjar@centrum.sk

"The only true wisdom is in knowing you know nothing.

 

[Sharkbyte33]

Pmesjar, what model of router should I suggest to this guy then? He doesnt need anything fancy - just something that will support 2-3 standard modems for dial-up connection to the internet.

Thanks everyone for your help!

 

[pmesjar]

I would look into modular 1700 routers. Since he needs two modems, he will need two async interfaces.

Peter Mesjar
CCNP, A+ certified
pmesjar@centrum.sk

"The only true wisdom is in knowing you know nothing.

 

[BuckWeet]

You also have to think of this, is it an ISDN modem? If its analog modem, what are the chances you'll get above 38400 anyways??


You could look at a 2509 or 2511, they have 8 or 16 asynch ports. (I use a 2511 for reverse telnet)


BuckWeet

 

[Sharkbyte33]

Buckweet,

The reason I've been saying analog modem is for simplicity. The reality is that they are Wireless CDMA2000 modems, capable of reaching speeds of 153Kbps the typical throughtput is 60-80Kbps. The serial interface on the modems runs at 115,200 exclusively, and the modem buffers any traffic that exceeds that speed. So in certain situations, its faster than ISDN - especially when I bundle 2 of them together.

I've got the clients vendor building a test case of this - they sold it to him saying it would work. My response has become - prove it or take it back.

 

[Sharkbyte33]

Hi guys!

Got a 2509 with 8 async ports on it and the following config:

version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Router_A
!
enable secret 5 $1$Z2nS$ggDU7ktl8jKl07gTzYVES1
enable password park
!
username all
ip subnet-zero
!
chat-script #777 ABORT ERROR "" "ATZ" OK "ATD #777" CONN \c
!
!
!
interface Ethernet0
ip nat inside
ip address 10.1.0.1 255.255.255.0
no ip mroute-cache
no cdp enable
no mop enabled
!
interface Serial0
no ip address
no ip mroute-cache
shutdown
no cdp enable
!
interface Serial1
no ip address
no ip mroute-cache
shutdown
no cdp enable
!
interface Async1
ip nat outside
ip address negotiated
encapsulation ppp
no ip mroute-cache
dialer in-band
dialer pool-member 1
!
interface Async2
ip nat outside
ip address negotiated
encapsulation ppp
no ip mroute-cache
dialer in-band
dialer pool-member 1
!
interface Dialer1
description PRIMARY CONNECTION TO THE INTERNET
ip nat outside
ip address negotiated
encapsulation ppp
carrier-delay 9
dialer priority 1
dialer pool 1
dialer idle-timeout 600 either
dialer fast-idle 10
dialer wait-for-carrier-time 10
dialer string "#777"
dialer hold-queue 100
dialer remote-name mountain
dialer-group 1
no cdp enable
ppp authentication pap chap
ppp chap hostname 7808812642@1x.telusmobility.com
ppp chap password 0 10801615443
ppp pap sent-username 7808812642@1x.telusmobility.com password 0 10801615443
!
interface Dialer2
description SECONDARY INTERFACE TO INTERNET
ip nat outside
ip address negotiated
encapsulation ppp
carrier-delay 9
dialer priority 2
dialer pool 1
dialer idle-timeout 600 either
dialer fast-idle 10
dialer wait-for-carrier-time 10
dialer string "#777"
dialer hold-queue 100
dialer remote-name mountain
dialer-group 1
no cdp enable
ppp authentication pap chap
ppp chap hostname 7808812643@1x.telusmobility.com
ppp chap password 0 10801615557
ppp pap sent-username 7808812643@1x.telusmobility.com password 0 10801615557
!
router eigrp 100
network 10.0.0.0
auto-summary
no eigrp log-neighbor-changes
no validate-update-source
!
ip nat inside source list 101 interface Dialer1 overload
ip nat inside source list 102 interface Dialer2 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
ip route 0.0.0.0 0.0.0.0 Dialer2
!
no ip http server
ip pim bidir-enable
!
access-list 101 deny eigrp any any
access-list 101 permit ip 10.1.0.0 0.0.0.255 any
access-list 102 deny eigrp any any
access-list 102 permit ip 10.1.0.0 0.0.0.255 any
dialer-list 1 protocol ip list 101
no cdp run
!
!
line con 0
logging synchronous
line 1 2
modem InOut
modem autoconfigure type mica
transport input all
stopbits 1
speed 115200
flowcontrol hardware
line 3 8
modem autoconfigure discovery
speed 115200
flowcontrol hardware
line aux 0
transport input all
line vty 0 4
password park
login
!
end


The observed behaviour is: System sits idle until an "interesting packet" wakes up the dialer(s). Both modems dial up - but modem #2 almost immediately disconnects.. If I Shutdown modem #1, modem #2 takes over.. How on earth do I get them to both dial up and STAY up?

Thanks!

 

[lui3]

You have the wrong equipment for a solution that will probably not work. Check with cisco on the mobile ip routers for more information. They are more along the lines of what you want to do. The newer CDMA modems support speeds greater than what the AUX ports were meant to provide.