Hi Antonio,
Thanks for the bug id. I forgot to mention in my first post the 7600 in
question is running 12.2(33)SRD4. The bud info indicates it should be
fixed in 12.2(33)SRD5. Did you manage to upgrade your 7600 and fix the
issue successfully?
Cheers
Ivan
On 30/Apr/2011 12:54 p.m., Antonio Soares wrote:
I had this problem a few weeks ago. It was bug CSCte89940:
+++++++++++++++
IBC invalid packet drop on RSP 720
Symptoms While pinging 7600 with RSP 720 we see some drops. These drops are
counted under show ibc under "Invalid pkts dropped" Conditions The issue is
seen on RSP 720 with SRD image. Workaround SRC05 and SRB07 do not have this
issue, nor it is present with SUP 720.
+++++++++++++++
Regards,
Antonio Soares, CCIE #18473 (R&S/SP)
[email protected]
http://www.ccie18473.net
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Ivan
Sent: sábado, 30 de Abril de 2011 01:24
To: cisco-nsp
Subject: [c-nsp] 7600 RP Invalid Packet Drops
I have a 7600 with a RSP720-3CXL-GE. When pinging between the 7600 and
any other device (I have tried a few) I am loosing packets - usually
5/10000 ish.
I have eventually been able to match the number of lost packets with a
counter from the output of "show ibc" which from my searching of the
archives "shows you the inband interface leading to the RP CPU". The
counter is: Invalid pkts dropped: 306
Can anyone advise what this counter indicates? Only seems to increment
with my ping traffic and not any customer traffic. I have other similar
hardware but can not reproduce the issue :-(
The output
7600#show ibc
Interface information:
Interface IBC0/0(idb 0x1C88ECE8)
5 minute rx rate 1138000 bits/sec, 156 packets/sec
5 minute tx rate 2305000 bits/sec, 306 packets/sec
1529092452 packets input, 97618397184 bytes
1480180863 broadcasts received
1522436849 packets output, 93778000882 bytes
15858294 broadcasts sent
0 Bridge Packet loopback drops
1415112685 Packets CEF Switched, 0 Packets Fast Switched
0 Packets SLB Switched, 0 Packets CWAN Switched
Label switched pkts dropped: 0 Pkts dropped during dma: 0
Invalid pkts dropped: 306 Pkts dropped(not cwan consumed): 0
Xconnect pkts processed: 29, dropped: 0
Xconnect pkt reflection drops: 0
Total paks copied for process level 29
Total short paks sent in route cache 1346148563
Total throttle drops 0 Input queue drops 0
total spd packets classified (50929199 low, 6698050 medium,
34521686 high)
total spd packets dropped (0 low, 0 medium, 0 high)
spd prio pkts allowed in due to selective throttling (0 med, 0
high)
IBC resets = 1; last at xxx 2010
Driver Level Counters: (Cumulative, Zeroed only at Reset)
Frames Bytes
Rx(0) 878738849 2018480538
Rx(1) 653772091 3242895654
Tx(0) 1522436850 1746755712
Input Drop Frame Count
Rx0 = 0 Rx1 = 0
Per Queue Receive Errors:
FRME OFLW BUFE NOENP DISCRD DISABLE BADCOUNT
Rx0 0 0 0 0 0 0 0
Rx1 0 0 0 0 0 0 0
Tx Errors/State:
One Collision Error = 0 More Collisions = 0
No Encap Error = 0 Deferred Error = 0
Loss Carrier Error = 0 Late Collision Error = 0
Excessive Collisions = 0 Buffer Error = 0
Tx Freeze Count = 0 Tx Intrpt Serv timeout= 1
Counters collected at Idb:
Is input throttled = 0 Throttle Count = 0
Rx Resource Errors = 0 Input Drops = 306
Input Errors = 0
Output Drops = 0 Giants/Runts = 0/0
Dma Mem Error = 0 Input Overrun = 0
7600#show platform hardware pfc mode
PFC operating mode : PFC3CXL
Cheers
Ivan
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