From: ccie2be (ccie2be@nyc.rr.com)
Date: Mon Aug 25 2003 - 16:22:50 GMT-3
I would also do a debug ip packet on R2. I suspect that when you ping R2
from R1, you will see (when R2 doesn't have a dialer string configured), a
failed encap message on R2. You may need a static route on R2 pointing to
R1. dt
----- Original Message -----
From: <Danny.Andaluz@triaton-na.com>
To: <wwwjjang@chol.com>; <ccielab@groupstudy.com>
Sent: Monday, August 25, 2003 2:16 PM
Subject: RE: ISDN's Dialer-map Question...
> Hi,
>
> To satisfy the requirement, configure "backup int bri0" on the s0
interface of R1. When you do this, you will see the output of "sh int bri0"
like the following:
>
> R1>SH INT BRI0
> BRI0/0 is standby mode, line protocol is down
> Hardware is PQUICC BRI with U interface
>
> I have seen that if you shut down the serial interface of R1, the ISDN
interface does not come out of standby mode. Try pulling the cable attached
to the serial of the R1. This should bring the ISDN out of standby mode and
into an "up up (Spoofing)" state. If there is interesting traffic, which
you have configured, it should make the ISDN dial (if routing is in place).
If not, just ping across the BRI and that should bring it up. Also make
sure you are dialing the correct number to reach R2.
>
> As far as being able to ping R2 when the # is added to the dialer on R2's
BRI, are you sure the serial on R1 is up at the time and not reaching R2's
bri0 via it?
>
> Before you do the ping, turn on the following debugs and post the results:
>
> Debug isdn q931
> Debug dialer
> Debug ppp nego
>
> Thanks,
> Danny
>
> -----Original Message-----
> From: wwwjjang@chol.com [mailto:wwwjjang@chol.com]
> Sent: Monday, August 25, 2003 10:57 AM
> To: ccielab@groupstudy.com
> Subject: ISDN's Dialer-map Question...
>
>
> Hi..Everyone..
>
> I'm trying to test a DDR...
> and i have a question about Dialer-map..
>
> Does Who know the answer ????
>
> Thanks..
>
> ---------
> Diagram
> ----------
>
> R1-(bri0 1.1.1.1)--ISDN--(bri0 1.1.1.2)--R2
> | |
> S0(2.2.2.1)-------------------------S0(2.2.2.2)
>
> ---------
> Question
> ---------
> -Configure DDR on R1 & R2 so the ISDN-link only comes up if R1's
S0-interface goes down. -Only R1 should initate the call !!!
>
> ----------
> My answer
> ----------
> R1>
>
> username R2 password 0 cisco
> !
> interface Serial0
> backup interface BRI0 **
> ip address 2.2.2.1 255.255.255.0
>
> interface BRI0
> ip address 1.1.1.1 255.255.255.0
> encapsulation ppp
> dialer map ip 1.1.1.2 name R2 broadcast 2222222 ** dialer-group 1 isdn
switch-type basic-5ess cdapi buffers regular 0 cdapi buffers raw 0 cdapi
buffers large 0 ! dialer-list 1 protocol ip permit
>
>
> R2>
>
> username R1 password 0 cisco
> !
> interface Serial0
> ip address 2.2.2.2 255.255.255.0
>
> interface BRI0
> ip address 1.1.1.2 255.255.255.0
> encapsulation ppp
> dialer map ip 1.1.1.1 name R1 broadcast ***
> dialer-group 1
> isdn switch-type basic-5ess
> cdapi buffers regular 0
> cdapi buffers raw 0
> cdapi buffers large 0
> !
> dialer-list 1 protocol ip permit
>
> =>Because The question needs that Only R1 should initate the call,
> So I omitted the Dialsting#(1111111) of R1 in the Dialer-map of R2's
Bri0
> (dialer map ip 1.1.1.1 name R1 broadcast ***)
> =>If I shut down the S0 of R1, The Bri-link between R1 & R2 is UP ..
> But When i ping the R2's BRI0(1.1.1.2) with a source R1's Bri0(1.1.1.1),
> It failed !!
> =>But When i add a Dial string# in R2 such as "dialer map ip 1.1.1.1 name
R1
> broadcast 1111111", The ping is O.K!!!
> =>My Question is that I must always configure Dial sting # in R1 & R2's
BRI0
> ??.
> and if i do it, Can R2 also intiate the call ??
> =>So The Question,"Only R1 should initate the call " has no meaning !!!
>
> How can i fix the problm ????
> Help me..
>
> I'm sorry for my poor English..
>
>
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