[cisco-voip] ISDN Bad Frame

[Mark Holloway]

Wow, thanks folks. I googled the error message and found a post that referenced removing and re-adding the isdn L3 binding.  Another person also mentioned rebooting which cleared it up at the end.


On Dec 4, 2009, at 3:43 PM, Mark Holloway wrote:

> Thanks everyone, but after adding 'isdn protocol emulate network' on the PSTN router the debug on the HQ router has a different output.  This is one I haven't encountered before.
> 
> r1-hq#
> Dec  4 22:08:58.358: ISDN Se0/0/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
> Dec  4 22:08:58.358: ISDN Se0/0/0:23 Q921: S4_SABME: BACKHAULED & vsc_wants_L2_up = FALSE
> Dec  4 22:08:59.358: ISDN Se0/0/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
> Dec  4 22:08:59.358: ISDN Se0/0/0:23 Q921: S4_SABME: BACKHAULED & vsc_wants_L2_up = FALSE
> Dec  4 22:09:05.358: ISDN Se0/0/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
> Dec  4 22:09:05.358: ISDN Se0/0/0:23 Q921: S4_SABME: BACKHAULED & vsc_wants_L2_up = FALSE
> Dec  4 22:09:06.358: ISDN Se0/0/0:23 Q921: User RX <- SABMEp sapi=0 tei=0
> Dec  4 22:09:06.358: ISDN Se0/0/0:23 Q921: S4_SABME: BACKHAULED & vsc_wants_L2_up = FALSE
> 
> 
> 
> 
> 
> 
> On Dec 4, 2009, at 2:55 PM, Joe Martini (joemar2) wrote:
> 
>> Check your “isdn protocol emulate {network | user}”
>>  
>> Joe
>>  
>> From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Mark Holloway
>> Sent: Friday, December 04, 2009 4:46 PM
>> To: cisco-voip at puck.nether.net
>> Subject: [cisco-voip] ISDN Bad Frame
>>  
>> I'm trying to get this lab ISDN configuration up and running but I am having ISDN problems.  I have two 2811 routers each with a VWIC 2MFT-T1 and a T1 crossover cable connecting them.  They won't move from TEI_ASSIGNED to MULTIPLE_FRAME_ESTABLISHED.  I know my T1 cable is good. 
>>  
>> # debug isdn q921
>>  
>> Dec  4 20:57:58.250: ISDN Se0/0/0:23 Q921: User RX <- BAD FRAME(0x00017F)
>> Dec  4 20:57:59.250: ISDN Se0/0/0:23 Q921: User RX <- BAD FRAME(0x00017F)
>> Dec  4 20:58:00.250: ISDN Se0/0/0:23 Q921: User RX <- BAD FRAME(0x00017F)
>>  
>>  
>> # show isdn status
>>  
>> Global ISDN Switchtype = primary-ni
>>  
>> %Q.931 is backhauled to CCM MANAGER 0x0003 on DSL 0. Layer 3 output may not apply
>>  
>> ISDN Serial0/0/0:23 interface
>>             dsl 0, interface ISDN Switchtype = primary-ni
>>             L2 Protocol = Q.921 0x0000  L3 Protocol(s) = CCM MANAGER 0x0003 
>>     Layer 1 Status:
>>             ACTIVE
>>     Layer 2 Status:
>>             TEI = 0, Ces = 1, SAPI = 0, State = TEI_ASSIGNED
>>  
>>  
>> # show run | sec controller
>> controller T1 0/0/0
>>  framing esf
>>  linecode b8zs
>>  cablelength short 133
>>  pri-group timeslots 1-3,24 service mgcp
>>  description PRI
>>  
>> # show run | sec Serial
>> interface Serial0/0/0:23
>>  description PRI
>>  no ip address
>>  encapsulation hdlc
>>  isdn switch-type primary-ni
>>  isdn incoming-voice voice
>>  isdn bind-l3 ccm-manager
>>  no cdp enable
>>  
>>  
>> The "PSTN" router
>>  
>> controller T1 0/0/0
>>  clock source internal
>>  cablelength short 133
>>  pri-group timeslots 1-3,24
>>  description PRI
>>  
>> interface Serial0/2/0:23
>>  description PRI
>>  no ip address
>>  encapsulation hdlc
>>  isdn switch-type primary-ni
>>  isdn incoming-voice voice
>>  isdn bchan-number-order ascending 
>>  no cdp enable
>>  
>> PSTN#deb isdn q921
>> debug isdn q921 is                  ON.
>> PSTN#term mon
>> PSTN#
>> Dec  4 21:54:51.090: ISDN Se0/0/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
>> Dec  4 21:54:55.590: ISDN Se0/2/0:23 Q921: L2_EstablishDataLink: sending SABME
>> Dec  4 21:54:55.590: ISDN Se0/2/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
>> Dec  4 21:54:56.590: ISDN Se0/2/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
>> Dec  4 21:54:57.090: ISDN Se0/0/0:23 Q921: L2_EstablishDataLink: sending SABME
>> Dec  4 21:54:57.090: ISDN Se0/0/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
>> Dec  4 21:54:57.590: ISDN Se0/2/0:23 Q921: User TX -> SABMEp sapi=0 tei=0
>> Dec  4 21:54:58.090: ISDN Se0/0/0:23 Q921: Net TX -> SABMEp sapi=0 tei=0
>>  
>>  
>>  
> 
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