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