ISDN problem... help!

agustinchernitskyagustinchernitsky Member Posts: 299
in CCNA & CCENT
Hello everyone,

I am configuring an ISDN connection but I am having one strange problem: the first connection works (I can ping the other side) but the second attempt to connect (after manual disconnect) wont.

Here is my confing:

ISDNA-FRROUTERC: 
hostname ISDNA-FRROUTERC
isdn switch-type basic-net3
interface BRI0
 description local nr 21, remote nr 20
 ip address 192.168.0.13 255.255.255.252
 dialer idle-timeout 3600
 dialer map ip 192.168.0.14 name ISDNB broadcast 20
 dialer-group 1
 isdn switch-type basic-net3
!
dialer-list 1 protocol ip permit

ISDNB router conf: 
hostname ISDNB
isdn switch-type basic-net3
interface BRI0
 ip address 192.168.0.14 255.255.255.252
 encapsulation hdlc
 dialer idle-timeout 3600
 dialer map ip 192.168.0.13 name ISDNA-FRROUTERC broadcast 21
 dialer-group 1
 isdn switch-type basic-net3
!
dialer-list 1 protocol ip permit

The ISDN switch doesn't require SPIDS.

Now, some info on the sh isdn cmd:
ISDNB#sh isdn status

Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
        dsl 0, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 66, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
    Layer 3 Status:
        1 Active Layer 3 Call(s)
        CCB:callid=A, sapi=0, ces=1, B-chan=2, calltype=DATA
    Active dsl 0 CCBs = 1
    The Free Channel Mask:  0x80000001
    Total Allocated ISDN CCBs = 1

ISDNA-FRROUTERC#sh isdn status

Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
        dsl 0, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 67, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
    Layer 3 Status:
        1 Active Layer 3 Call(s)
        CCB:callid=8003, sapi=0, ces=1, B-chan=1, calltype=DATA, hdlctype=HDLC-TRUNK
    Active dsl 0 CCBs = 1
    The Free Channel Mask:  0x80000002
    Total Allocated ISDN CCBs = 1

ISDNB#sh isdn active

--------------------------------------------------------------------------------
                                ISDN ACTIVE CALLS
--------------------------------------------------------------------------------
Call    Calling      Called       Remote  Seconds Seconds Seconds Charges
Type    Number       Number       Name    Used    Left    Idle    Units/Currency
--------------------------------------------------------------------------------
In           20          20                   373    3226     373
--------------------------------------------------------------------------------

ISDNA-FRROUTERC#sh isdn active

--------------------------------------------------------------------------------
                                ISDN ACTIVE CALLS
--------------------------------------------------------------------------------
Call    Calling      Called       Remote  Seconds Seconds Seconds Charges
Type    Number       Number       Name    Used    Left    Idle    Units/Currency
--------------------------------------------------------------------------------
Out   ---N/A---          20                   360    3246     353      0
--------------------------------------------------------------------------------

Dialer sh cmds: 
ISDNB#sh dialer maps

Static dialer map ip 192.168.0.13 name ISDNA-FRROUTERC (21) on BR0

ISDNA-FRROUTERC#sh dialer maps

Static dialer map ip 192.168.0.14   name ISDNB     (20) on BR0

ISDNB#sh dialer interface bri 0

BRI0 - dialer type = ISDN

Dial String      Successes   Failures    Last DNIS   Last status
21                       0          1    00:04:57           failed
0 incoming call(s) have been screened.
0 incoming call(s) rejected for callback.

BRI0:1 - dialer type = ISDN
Idle timer (3600 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is idle

BRI0:2 - dialer type = ISDN
Idle timer (3600 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is data link layer up
Time until disconnect 3300 secs
Connected to 20

ISDNA-FRROUTERC#sh dialer interface bri 0

BRI0 - dialer type = ISDN

Dial String      Successes   Failures    Last DNIS   Last status
20                       1          0    00:05:05       successful
0 incoming call(s) have been screened.
0 incoming call(s) rejected for callback.

BRI0:1 - dialer type = ISDN
Idle timer (3600 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is data link layer up
Dial reason: ip (s=192.168.0.13, d=192.168.0.14)
Time until disconnect 3302 secs
Connected to 20

BRI0:2 - dialer type = ISDN
Idle timer (3600 secs), Fast idle timer (20 secs)
Wait for carrier (30 secs), Re-enable (15 secs)
Dialer state is idle

Well everything checks fine... but I can't ping from one side to the other!!!

Any ideas? Guidance??

Thanks!
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