router 1 aux back to router 2 aux

[nyt88888]

hi,

has another done this set up before.

router 2600 (aux) ----> modem --4 wire (lease line) ---->modem---> router 2600 (aux).

kindly advise what is require to take note to set this up.

i have followed thru the configuration provided from cisco website. but i still could ping the other router. pls see configuration below

Leased Line Originating Configuration

version 12.1

service timestamps debug uptime

service timestamps log uptime

!

modemcap entry micro_LL_orig:AA=S0=0&L2

modemcap entry micro_LL_ans:AA=S0=1&L2

!

interface Async33

no ip address

encapsulation ppp

no ip route-cache

no ip mroute-cache

dialer in-band

dialer pool-member 1

async default routing

async dynamic routing

async mode dedicated

no peer default ip address

no fair-queue

no cdp enable

ppp direction callout

ppp multilink

!

interface Dialer1

ip address 1.1.24.1 255.255.255.0

encapsulation ppp

no ip route-cache

no ip mroute-cache

dialer remote-name sara40

dialer pool 1

dialer idle-timeout 0

dialer max-call 4096

no cdp enable

ppp direction callout

ppp multilink

!

dialer-list 1 protocol ip permit

!

line con 0

exec-timeout 0 0

transport input none

line 33

no exec

modem InOut

modem autoconfigure type micro_LL_orig

transport input all

line aux 0

exec-timeout 0 0

line vty 0 4

exec-timeout 0 0

!

end

Leased Line Answering Configuration

!

version 12.1

service timestamps debug uptime

service timestamps log uptime

!

modemcap entry micro_LL_orig:AA=S0=0&L2

modemcap entry micro_LL_ans:AA=S0=1&L2

!

interface Async73

no ip address

encapsulation ppp

no ip route-cache

no ip mroute-cache

dialer in-band

dialer pool-member 1

async default routing

async dynamic routing

async mode dedicated

no peer default ip address

no fair-queue

no cdp enable

ppp direction callout

ppp multilink

!

interface Dialer1

ip address 1.1.24.2 255.255.255.0

encapsulation ppp

no ip route-cache

no ip mroute-cache

load-interval 30

dialer remote-name sara20

dialer pool 1

dialer idle-timeout 0

dialer load-threshold 1 either

dialer max-call 4096

no cdp enable

ppp direction callout

ppp multilink

!

dialer-list 1 protocol ip permit

!

line con 0

exec-timeout 0 0

transport input none

line 73

no exec

modem InOut

modem autoconfigure type micro_LL_ans

transport input all

line aux 0

transport input all

flowcontrol hardware

line vty 0 4

exec-timeout 0 0

!

end

[makchitale]

Did you mean 2 wire lease line? Can you please post the output of "sh modem log".

http://www.cisco.com/en/US/products/sw/iosswrel/ps1834/products_feature_guide09186a00800803d6.html

What type of external modems do we have here connected on the Aux port? In the sketch you have mentioned aux port on the 2600 routers at either end however the configuration is on other lines, just want to ensure the modems are connected on the lines that have been configured for.

Thanks, Mak

[nyt88888]

Type of modem = pstn modem.

i have configured to both line 65 for my 2 2600 routers.

Regarding the command show modem log. This command is not found in IOS 12.3(10). Can you help to recommend me an IOS that i can use.

[makchitale]

True it's a PSTN modem but will like to know the modem vendor so that we can choose the correct init string (modemcap).

These are external modems, ignore the sh modem log command.

Thanks, Mak

[nyt88888]

The modem vendor is Zyxel. (model U-336S).

[makchitale]

You will need to get the modem vendor involved so that we get the correct AT commands from them for the below requirements for lease line support.

* The answering modem AA register is set to 1 (AA=S0=1) so that autoanswer is "on".

* The originating modem AA register is set to 0 (AA=S0=0) so that autoanswer is "off".

Basically we need commands similar to the above.

Also need to find out whether the Zyxel modem supports LL functionality & what's the command for that? For example Cisco NM-AM modems use &L2, that is if the autoanswer feature (AA) is used, both the originating and answering modem must be put into leased line mode with the &L2 AT command.

Thanks, Mak

[nyt88888]

The zyxel modems support 4wires LL and AA. These can be configured from the modem LCD. The modem back to back has been proved working when i use both PCs as DTE.

Is there any debug command that i can try to use on the router to find out what went wrong. or can you help to advise if the attached configuration from cisco correct to setup up the aux back to aux back.

any other help is welcome

[nyt88888]

can I use the modemcap discovery and then use modemcap entry to force in the configuration of the modem setting?

[nyt88888]

hi,

may i know for this configuration. do i need to you the dialer interface?

thanks