DFM tells me HighQueueDropRate, but where?

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Dec 17th, 2009
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Hello


In an MPLS multicast environment we have some Cisco 7606 NPE routers. From one of them (POI) I se this HighQueueDropRate in DFM:


Name                                      Value






Event_Description                     HighQueueDropRate

Component                               IF-hob2cnpe01.mgmt.hef.dk/30 [Lo8] [10.53.13.8]

ComponentClass                       Interface

ComponentEventCode                1053

Type                                         SOFTWARELOOPBACK

OutputPacketQueueDropPct      0.0 %


MaxSpeed                               8000000000

OutputPacketQueueDropRate    0.0 PPS

OutputPacketNoErrorRate          0.06827309 PPS

QueueDropThreshold                1

InputPacketQueueDropPct         0.0 %

InputPacketNoErrorRate           8.349398 PPS

DuplexMode                             FULLDUPLEX

InputPacketQueueDropRate      0.0 PPS     


         

In configuration file I have no Loopback8 defined only Loopback0

The IP address 10.53.13.8 is : IP pim VRF10108 rp-address 10.53.13.8

The log shows no error.


Can anyone explain to me where I have a problem?


Its a cisco CISCO7606 (R7000) processor (revision 1.0) with 458720K/65536K bytes of memory.

Cisco IOS Software, c7600s72033_rp Software (c7600s72033_rp-ADVIPSERVICESK9-M), Version 12.2(33)SRC5, RELEASE SOFTWARE (fc2)

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Michel Hegeraat Thu, 12/17/2009 - 05:48
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When was the last time DFM rediscovered this machine?


Try to rediscover it Then check the Detailed Device Viewin dfm


Its probably an if index mismatch.


If DFM still discovers an Lo8 on the router then I guess the router hasn't had a lot of love for quite a while. A reboot should be scheduled.


Cheers,


Michel

Eydfinnur Mortensen Thu, 12/17/2009 - 07:11
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Thank you for quick answer Michel.


Last time the device was discovered was 28-maj, so I rediscovered it. Made no different. In Detailed Device View, Interface it still reports different Loopback interfaces 0,1,2,4,6,8,10.

Only Loopback0 is in config file.


The Machine was rebooted 2 weeks ago.


Kind regards


Eydfinnur

yjdabear Thu, 12/17/2009 - 08:45
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The HighQueueDropRate results are polled by DFM from specific SNMP OID(s). The logging buffer on the router usually doesn't hold related entries to this type of stats.


What is the actual rtr interface with the 10.53.13.8 IP addr though? What output do you get with "sh int [actual-interface] | begin Input"? For example:


rtr# show int vlan210 | begin Input


Input queue: 0/99/0/0 (size/max/drops/flushes); Total output drops: 0

[snipped]

Eydfinnur Mortensen Fri, 12/18/2009 - 06:31
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10.53.13.8 is the rendevous point for one of our content providers multicasts. : IP pim VRF10108 rp-address 10.53.13.8

So there is no interface with this address.


Today we found that these drops come from one multicast group forced from the content provider toward our network.


We have sent a question to the provider about this.


Thanks for your suggestions. I close 'the case' and wish you a happy christmas.


Eydfinnur

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