What is the debugging output (or error message) if you try to establish a call?
That should bring Layer 2 up again (but it isn't as you say)

Christian

-----Original Message-----
From: swinog-bounces@lists.swinog.ch
[mailto:swinog-bounces@lists.swinog.ch]On Behalf Of Beat Rubischon
Sent: Donnerstag, 3. März 2005 15:16
To: SWINOG Mailing List
Subject: Re: [swinog] ISDN Layer 2 Problem

Hello!

Am 03.03.05 schrieb Erich Hohermuth:

> interface BRI0
>  no ip address
>  encapsulation ppp
>  no ip route-cache
>  no ip mroute-cache
>  load-interval 30
>  dialer pool-member 6
>  isdn switch-type basic-net3
>  isdn tei-negotiation first-call
>  no cdp enable
>  ppp multilink

My options:

interface BRI0
 description ISDN interface
 no ip address
 encapsulation ppp
 dialer pool-member 2
 isdn switch-type basic-net3
 isdn answer1 0556145044
 isdn calling-number 0556145044
 no cdp enable

I added "isdn tei-negotiation first-call", channel bundling is
no desired option:

rt-1#conf t
rt-1(config)#int bri0
rt-1(config-if)#isdn tei-negotiation first-call
rt-1(config-if)#no ip route-cache
rt-1(config-if)#no ip mroute-cache
rt-1(config-if)#end
Mar  3 15:11:39.332: %SYS-5-CONFIG_I: Configured from console by console

rt-1#clear interface bri 0
Mar  3 15:12:05.896: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0, TEI 75 changed to up

(now Layer 2 is up):

rt-1#show isdn status
Mar  3 15:14:19.404: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0,
TEI 77 changep
Global ISDN Switchtype = basic-net3
ISDN BRI0 interface
        dsl 0, interface ISDN Switchtype = basic-net3
    Layer 1 Status:
        ACTIVE
    Layer 2 Status:
        TEI = 77, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x80000003
    Total Allocated ISDN CCBs = 0

(15 seconds later):

Mar  3 15:12:20.864: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0, TEI 75 changed to down

(and Layer 2 is down):

rt-1#show 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 = 75, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
    Layer 3 Status:
        0 Active Layer 3 Call(s)
    Active dsl 0 CCBs = 0
    The Free Channel Mask:  0x80000003
    Total Allocated ISDN CCBs = 0

Dialing is only possible while Layer 2 Status is
MULTIPLE_FRAME_ESTABLISHED...

Beat

--
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