Catalyst 2960-S Stack Interface Packet Drop

Hi all!
I have a 2960-S stack with the following behavior:
SWITCH#sh int g1/0/26
     Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 12275
When I issue the show mls qos interface g1/0/26 statistics:
SWITCH#show mls qos interface g1/0/26 statistics
GigabitEthernet1/0/26 (All statistics are in packets)
dscp: incoming
0 - 4 :    35356866        0            0            0            0
5 - 9 :            0            0            0            2            0
10 - 14 :           0            0            0            0            0
15 - 19 :           0            0            0            0            0
20 - 24 :           0            0            0            0            0
25 - 29 :           0            0            0            0            0
30 - 34 :           0            0            0            0            0
35 - 39 :           0            0            0            0            0
40 - 44 :      634354        0            0            0            0
45 - 49 :           0     49446819      0            0            0
50 - 54 :           0            0            0            0            0
55 - 59 :           0            0            0            0            0
60 - 64 :           0            0            0            0
dscp: outgoing
0 - 4 :     6835883         0            0            0            0
5 - 9 :            0             0            0     43973612      0
10 - 14 :           0            0            0            0            0
15 - 19 :           0            1            0            0            0
20 - 24 :           0            0            0            0       204586
25 - 29 :           0            0            0            0            0
30 - 34 :           0            0            0            0            0
35 - 39 :           0            0            0            0            0
40 - 44 :           2            0            0            0            0
45 - 49 :           0      2215325       0           55            0
50 - 54 :           0            0            0            0            0
55 - 59 :           0        29668         0            0            0
60 - 64 :           0            0            0            0
cos: incoming
0 - 4 :    35374153            2            0            0            0
5 - 7 :    50121685            0            0
cos: outgoing
0 - 4 :    12975602     43973617        85081       204622          122
5 - 7 :    47659950          105     34377016
output queues enqueued:
queue:    threshold1   threshold2   threshold3
queue 0:           0           0    47659935
queue 1:       92482     1222278    34432039
queue 2:           0           0    13178400
queue 3:           0           0    43982889
output queues dropped:
queue:    threshold1   threshold2   threshold3
queue 0:           0           0          71
queue 1:           0        1738           0
queue 2:           0           0          20
queue 3:           0           0      375553
Policer: Inprofile:            0 OutofProfile:            0
I need some help to read this output but it seems that packets are dropped at all queues, isn't it?
Any help please?
Thanks in advance!

Please post the output to the following commands:
1. sh interface G1/0/26; and
2. sh controll e G1/0/26
What kind of client is connected to port Gi1/0/26?

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MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 36/255, rxload 12/255
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Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
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Sh int
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Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is RJ45
output flow-control is XON, input flow-control is XON
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters 1w0d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 82137
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 4722000 bits/sec, 1449 packets/sec
5 minute output rate 14469000 bits/sec, 2088 packets/sec
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     Received 134822 broadcasts, 0 runts, 0 giants, 0 throttles
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CHAN4507#sh platform cpu pac stat
Packets Dropped In Hardware By CPU Subport TxQueue 0 TxQueue 1 0 0 3 105952 Packets Dropped In Processing Total 5 sec avg 3914397 0 Packets Dropped In Processing Event Total Input Acl 338853 SA Miss 13 Packets Dropped In Processing Priority Total Normal 3913388 Medium 21642 High 996 Crucial 3553902 Packets Dropped In Processing Reason Total SrcAddrTableFilt L2DstDrop AclActionDrop 338853 NoFloodPorts 3575527 Total packet queues 16
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1 min avg 5 min avg 1 hour avg
0 0 0
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5 sec avg 1 min avg 5 min avg 1 hour avg
0 0 0 0
0 0 0 0
by Priority
5 sec avg 1 min avg 5 min avg 1 hour avg
0 0 0 0
0 0 0 0
0 0 0 0
0 0 0 0
by Reason
5 sec avg 1 min avg 5 min avg 1 hour avg
2 0 0 0 0
15 0 0 0 0
0 0 0 0
0 0 0 0
5 sec avg 1 min avg 5 min avg 1 hour avg
132 133 132 132
1 1 1 1
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2 0 0 0 0
0 0 0 0
2 3 2 2
1 1 1 1
0 1 1 0
0 0 0 0
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15 13 12 11
5 sec avg 1 min avg 5 min avg 1 hour avg
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questions?
ports particularly affected by these drops?
ports on the chassis to reduce drops?

check out the following link :
http://www.cisco.com/en/US/products/hw/switches/ps663/products_tech_note09186a00804cef15.shtml
hope this helps

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Mod Server-IP        Server-UUID                           Server-Name
6    10.16.1.12       4c4c4544-0034-3010-8036-b4c04f33354a nrk-vi01-h07.nt.se
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LTL   VSM Port Admin Link State PC-LTL SGID Vem Port Type
   19     Eth6/3     UP   UP    F/B*    305     0    vmnic2
   20     Eth6/4     UP   UP    F/B*    305     0    vmnic3
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Available Packet Entries : 14169
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SSwitch3#test cable-diagnostics tdr int g1/0/16
TDR test started on interface Gi1/0/16
A TDR test can take a few seconds to run on an interface
Use 'show cable-diagnostics tdr' to read the TDR results.
SSwitch3#show cable-diagnostics tdr int g1/0/16
TDR test last run on: June 27 13:39:21
Interface Speed Local pair Pair length        Remote pair Pair status
Gi1/0/16 1000M Pair A     52   +/- 10 meters Pair A      Normal
                Pair B     52   +/- 10 meters Pair B      Normal
                Pair C     52   +/- 10 meters Pair C      Normal
                Pair D     52   +/- 10 meters Pair D      Normal
SSwitch3#

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Hi Cisco Community
I am experiencing a very strang bug or it's just a "feature". We are setting up 3 Catalyst 2960-x (EX5) as a stack. Te 1/0/1 and Te 2/0/1 are bundled as Etherchannel. (works fine "In-channel-group")
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Best regards

Hello Ajay,
This is hardware failure. Please replace it.
Another useful post i found
https://supportforums.cisco.com/discussion/12251826/brom-boot-2960xr-switch
Hope this helps
******Please rate useful posts******
Thanks,
Madhu

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Post the complete output to the command "sh interface <BLAH>".

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#sho post
Stored system POST messages:
Switch 1
POST: MA BIST : Begin
FC 1 MBIST Test Passed.
DP Sg1 MBIST Test Passed.
DP Xg1 MBIST Test Passed.
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FC 0 MBIST Test Passed.
DP Sg0 MBIST Test Passed.
DP Xg0 MBIST Test Passed.
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POST: MA BIST : End, Status Passed
POST: TCAM BIST : Begin
POST: TCAM BIST : End, Status Passed
POST: Inline Power Controller Tests : Begin
POST: Inline Power Controller Tests : End, Status Passed
POST: Thermal, Fan Tests : Begin
POST: Thermal, Fan Tests : End, Status Passed
POST: PortASIC Stack Port Loopback Tests : Begin
POST: PortASIC Stack Port Loopback Tests : End, Status Passed
POST: PortASIC Port Loopback Tests : Begin
POST: PortASIC Port Loopback Tests : End, Status Passed
POST: EMAC Loopback Tests : Begin
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1 370.0 84.7 285.3
2 370.0 56.7 313.3
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Gi1/0/3 auto off 0.0 n/a n/a 30.0
Gi1/0/4 auto off 0.0 n/a n/a 30.0
Gi1/0/5 auto off 0.0 n/a n/a 30.0
Gi1/0/6 auto off 0.0 n/a n/a 30.0
Gi1/0/7 auto off 0.0 n/a n/a 30.0
Gi1/0/8 auto off 0.0 n/a n/a 30.0
Gi1/0/9 auto off 0.0 n/a n/a 30.0
Gi1/0/10 auto on 6.3 IP Phone 7912 n/a 30.0
Gi1/0/11 auto off 0.0 n/a n/a 30.0
Gi1/0/12 auto off 0.0 n/a n/a 30.0
Gi1/0/13 auto on 6.3 IP Phone 7940 n/a 30.0
Gi1/0/14 auto off 0.0 n/a n/a 30.0
Gi1/0/15 auto off 0.0 n/a n/a 30.0
Gi1/0/16 auto off 0.0 n/a n/a 30.0
Gi1/0/17 auto off 0.0 n/a n/a 30.0
Gi1/0/18 auto on 6.3 IP Phone 7940 n/a 30.0
Gi1/0/19 auto off 0.0 n/a n/a 30.0
Gi1/0/20 auto on 6.3 IP Phone 7940 n/a 30.0
Gi1/0/21 auto on 6.3 IP Phone 7940 n/a 30.0
Gi1/0/22 auto off 0.0 n/a n/a 30.0
Gi1/0/23 auto on 6.3 IP Phone 7960 n/a 30.0
Gi1/0/24 auto off 0.0 n/a n/a 30.0
Gi1/0/25 auto on 6.3 IP Phone 7940 n/a 30.0
Gi1/0/26 auto off 0.0 n/a n/a 30.0
Gi1/0/27 auto off 0.0 n/a n/a 30.0
Gi1/0/28 auto off 0.0 n/a n/a 30.0
Gi1/0/29 auto off 0.0 n/a n/a 30.0
Gi1/0/30 auto off 0.0 n/a n/a 30.0
Gi1/0/31 auto off 0.0 n/a n/a 30.0
Gi1/0/32 auto off 0.0 n/a n/a 30.0
Gi1/0/33 auto off 0.0 n/a n/a 30.0
Gi1/0/34 auto off 0.0 n/a n/a 30.0
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Gi1/0/36 auto off 0.0 n/a n/a 30.0
Gi1/0/37 auto on 6.3 IP Phone 7960 n/a 30.0
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Gi1/0/39 auto off 0.0 n/a n/a 30.0
Gi1/0/40 auto off 0.0 n/a n/a 30.0
Gi1/0/41 auto off 0.0 n/a n/a 30.0
Gi1/0/42 auto on 6.3 IP Phone 7912 n/a 30.0
Gi1/0/43 auto off 0.0 n/a n/a 30.0
Gi1/0/44 auto off 0.0 n/a n/a 30.0
Gi1/0/45 auto off 0.0 n/a n/a 30.0
Gi1/0/46 auto off 0.0 n/a n/a 30.0
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macro description cisco-switch
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Hello,
I would like to know if there is a way to validate that a SFP type 1000baseLX is working properly on catalyst 2960.
I am looking for the loop feature that is available on routers.... but not on switches.
The topology is 2 catalyst 2960 switches with both SFP type 1000baseLX connected together with a fiber. This was working find but actually, the two interfaces are down/down.
The idea is to be sure that the problem is on the fiber and not on one of the SFP....
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UniDirectional Link Detection (UDLD) addresses your concern regarding the fiber. See http://www.cisco.com/en/US/docs/switches/lan/catalyst2960/software/release/12.2_46_se/configuration/guide/swudld.html for more information.
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Hope this helps.

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Hi,
Our customer took 30Mbps metro link from us. Even at 17Mbps link utilization they are facing packet drops. Our side policer is implemented for 30Mbps. There are no errors on customer or our interfaces. But I can see exceed packets under 'show policy-map interface' . Used maximum Bc. Does customer required to implement shaping his end with same CIR and Bc.
Regards
Siva K

Hi Siva,
It is not a mandatory rule that Customer should also have the same CIR configured with shaping.
When Customer have 30 Mbps circuit SLA with Service Provider, he may be able to pump ta line rate from CE side. But on PE side, it will be policied and excess traffic will be dropped.
To avoid Customer's traffic getting dropped at PE, It is advisible to configure shaping at CE side so that the traffic SLA will be maintained without or with less number of packet loss.
Can you post your config and show policy-map interface output with traffic?.
Regards,
Nagendra

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I've got a problem with the Catalyst 2960 / 24TCL switch. The Flash-directory was empty. After I copy with xmodem the firmware bin-file into the flash-directory and installed it .. I miss the HTML-Directory. Can somebody tell me how I can get it back?

SSwitch3#test cable-diagnostics tdr int g1/0/16
TDR test started on interface Gi1/0/16
A TDR test can take a few seconds to run on an interface
Use 'show cable-diagnostics tdr' to read the TDR results.
SSwitch3#show cable-diagnostics tdr int g1/0/16
TDR test last run on: June 27 13:39:21
Interface Speed Local pair Pair length        Remote pair Pair status
Gi1/0/16 1000M Pair A     52   +/- 10 meters Pair A      Normal
                Pair B     52   +/- 10 meters Pair B      Normal
                Pair C     52   +/- 10 meters Pair C      Normal
                Pair D     52   +/- 10 meters Pair D      Normal
SSwitch3#

Catalyst 2960-S Stack Interface Packet Drop

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