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

[Rolf Mendelsohn]

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