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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