[c-nsp] 7206 crashing when enabling LLQ on Frame-relay interface(s)

[Rodney Dunn]

On Mon, Feb 12, 2007 at 06:19:55PM +0100, Rolf Mendelsohn wrote:
> Hi Everyone,
> 
> Thanks to those who replied off-list. To summarise 12.2SB is a new train 
> focusing on ISG and I should not be running it anyway.

While a general suggestion for IOS release selection is always
good that doesn't justify a bug in our code that makes a device
reload. That's something we should fix regardless.



> For those who are interested I also found the bug under bug toolkit:
> 
> CSCea72991 Bug Details
>    
>   Headline   E1/T1 on VIP: %SYS-2-QCOUNT: Bad deqeueue
>   Product   IOS
>   Feature   QOS   Duplicate of   
>   Severity   2  Severity help  Status   Resolved  Status help
>   First Found-in Version   12.2(16)   All affected versions   First Fixed-in 
> Version   12.0(23)S04, 12.2(17.7)S, 12.0(25.3)S01, 12.3(2.1), 12.2(17.8), 
> 12.1(19.2)E, 12.1(19)E02, 12.3(3.1)T, 12.0(24)S03, 12.2(15)T07, 12.3(2.3)B, 
> 12.2(15)ZK01, 12.0(25)S02, 12.0(25)SX02, 12.0(27)SV, 12.3(7)XI  Version help
>   Release Notes


That can't be the right bug because it was fixed in 12.2(17.7)S which
is years before 12.2(28)SB code.

Please open a TAC case and provide the logs, configuration, and 'sh ver'
so they can decode those messages. It will probably be pretty easy to find
with that information.

Rodney

>  
> cheers
> /rolf
> 
> 
> On Sunday 11 February 2007 20:21, Rolf Mendelsohn wrote:
> > Hi Guys,
> >
> > I have a 7200 doing a bit of MPLS / routing, frame-relay FR.12
> > fragmentation and now I wanted to add LLQ for prioritising traffic.
> >
> > However the router keeps crashing with traceback errors, i have tested on
> > 12.2.28-SB4 and 12.2.28SB6
> >
> > I was wondering if anybody had come across the following:
> >
> > Feb 11 17:52:59.301 UTC: %SYS-2-QCOUNT: Bad deqeueue 63EF09D8 count 1
> > -Process= "<interrupt level>", ipl= 1
> > -Traceback= 60888024 60A0FF98 60A269C4 601B24BC 6051979C 6051CCE8 6051CFB4
> > Feb 11 17:52:59.305 UTC: %SYS-2-QCOUNT: Bad deqeueue 63EF09D8 count 0
> > -Process= "<interrupt level>", ipl= 1
> > -Traceback= 60888024 60A0FF98 60A269C4 601B24BC 6051979C 6051CCE8 6051CFB4
> > pe1.wdh1.na#
> > Feb 11 17:53:00.641 UTC: %SYS-2-QCOUNT: Bad deqeueue 63EF09D8 count 0
> > -Process= "<interrupt level>", ipl= 1
> > -Traceback= 60888024 601206D4 6069814C 606CF504 605BE7C8 605BCFD4 6191D28C
> > 601AF678 6051979C 6051CCE8 6051CFB4
> >
> > I will try and open a TAC case tommorrow, but am really in a hurry to try
> > and get this finished.
> >
> > If the problem is frame-relay related then perhaps i should swap to
> > Mulitilink PPP?
> >
> >
> > The config is below:
> >
> > policy-map mpls-qos
> >  description Set a General Backbone QoS policy
> >   class qos1
> >     priority percent 20
> >   class qos2
> >     bandwidth percent 30
> >   class class-default
> >     fair-queue
> >
> > class-map match-any qos1
> >   description Critical Class
> >   match mpls experimental topmost 5  6  7
> >   match ip precedence 5  6  7
> > class-map match-any qos2
> >   description Priority class
> >   match mpls experimental topmost 1  2  3  4
> >   match ip precedence 1  2  3  4
> >
> > pe1.wdh1.na#sh mpls interfaces
> > Interface              IP            Tunnel   BGP Static Operational
> > FastEthernet0/1        Yes (ldp)     No       No  No     Yes
> > Serial5/2              Yes (ldp)     No       No  No     Yes
> > Serial6/0:0            Yes (ldp)     No       No  No     Yes
> > Serial3/0:2.1          Yes (ldp)     No       No  No     Yes
> > Serial3/0:5.1          Yes (ldp)     No       No  No     Yes
> > Serial3/0:6.1          Yes (ldp)     No       No  No     Yes
> > Serial3/0:7.1          Yes (ldp)     No       No  No     Yes
> > Serial3/0:8.1          Yes (ldp)     No       No  No     Yes
> > Serial3/0:10.1         Yes (ldp)     No       No  No     Yes
> > Serial3/2:2.1          Yes (ldp)     No       No  No     Yes
> > Serial3/5:0.1          Yes (ldp)     No       No  No     Yes
> >
> >
> > I Have a couple of interfaces running MPLS, configured as such:
> >
> > interface Serial3/0:2
> >  description 128k  Backbone link to Town B PoP
> >  mtu 1516
> >  bandwidth 128
> >  no ip address
> >  encapsulation frame-relay IETF
> >  frame-relay lmi-type ansi
> >  frame-relay intf-type dce
> >  frame-relay fragment 192 end-to-end
> > end
> > !
> > interface Serial3/0:2.1 point-to-point
> >  description 128k  Backbone link to Town A PoP
> >  bandwidth 128
> >  ip address X.Y.Z.71 255.255.255.254
> >  mpls ip
> >  no cdp enable
> >  frame-relay interface-dlci 206
> > end
> >
> > cheers
> > /rolf
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