Switch port having output drops

[Amjad Hashim]

Hello All,

I have a few blade servers with cisco switch modules installed in them.  The problem i am having is that some of my internal ports connected to internal servers  are giving output drops.

Please see the attached file for info.

If u need more infomation plz feel free to get in touch.

Can u please help me out of this issue, i will really appreciate your help.

Regards,

Amjad.

[Edwin Summers]

You need an ethernet under the interface to catch any potential drops.  (j/k)

See if either of these help:

https://learningnetwork.cisco.com/thread/32459

http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a0080094791.shtml

[Leo Laohoo]

May I request for the complete output of the command "sh contr e g5/0/7" please?

You can also try one way, clear both counters ("clear contr e g5/0/7"  and "clear count g 5/07").  Next bring the interface speed of Gig 5/07 to 100 mbps and see if the output drop is still incrementing.

[Amjad Hashim]

Hello Leolaohoo,

I can't configured the port to 100 meg because they are production servers .

Anyway i am posting the show controller command, please keep in mind they are IBM bladecentre's switch modules.

Please find the output below.

DC1-CORE-DMZ7-SW1#sh interfaces counters errors

Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi1/0/1             0           0           0           0          0      1237866
Gi1/0/2             0           0           0           0          0      1208624
Gi1/0/3             0           0           0           0          0      4471067
Gi1/0/4             0           0           0           0          0      5015480
Gi1/0/5             0           0           0           0          0      1118993
Gi1/0/6             0           0           0           0          0        30753
Gi1/0/7             0           0           0           0          0         1843
Gi1/0/8             0           0           0           0          0            3
Gi1/0/9             0           0           0           0          0            0
Gi1/0/10            0           0           0           0          0            0
Gi1/0/11            0           0           0           0          0         2211
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi1/0/12            0           0           0           0          0            0
Gi1/0/13            0           0           0           0          0            0
Gi1/0/14            0           0           0           0          0            0
Te1/0/1             0           0           0           0          0            0
Gi2/0/1             0           0           0           0          0       325035
Gi2/0/2             0           0           0           0          0       178601
Gi2/0/3             0           0           0           0          0            0
Gi2/0/4             0           0           0           0          0      4339977
Gi2/0/5             0           0           0           0          0            0
Gi2/0/6             0           0           0           0          0        22343
Gi2/0/7             0           0           0           0          0            0
Gi2/0/8             0           0           0           0          0          867
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi2/0/9             0           0           0           0          0            0
Gi2/0/10            0           0           0           0          0            0
Gi2/0/11            0           0           0           0          0        21820
Gi2/0/12            0           0           0           0          0            0
Gi2/0/13            0           0           0           0          0            0
Gi2/0/14            0           0           0           0          0            0
Gi2/0/15            0           0           0           0          0      2065526
Gi2/0/16            0           0           0           0          0       228909
Gi2/0/17            0           0           0           0          0            0
Gi2/0/18            0           0           0           0          0            0
Gi3/0/1             0           0           0           0          0      1996653
Gi3/0/2             0           0           0           0          0        30262
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi3/0/3             0           0           0           0          0      2818712
Gi3/0/4             0           0           0           0          0        30449
Gi3/0/5             0           0           0           0          0           17
Gi3/0/6             0           0           0           0          0         1354
Gi3/0/7             0           0           0           0          0        28700
Gi3/0/8             0           0           0           0          0        68259
Gi3/0/9             0           0           0           0          0        18976
Gi3/0/10            0           0           0           0          0       951645
Gi3/0/11            0           0           0           0          0            0
Gi3/0/12            0           0           0           0          0           11
Gi3/0/13            0           0           0           0          0           16
Gi3/0/14            0           0           0           0          0            0
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Te3/0/1             0           0           0           0          0            0
Gi4/0/1             0           0           0           0          0            0
Gi4/0/2             0           0           0           0          0         2687
Gi4/0/3             0           0           0           0          0            0
Gi4/0/4             0           0           0           0          0        21891
Gi4/0/5             0           0           0           0          0            0
Gi4/0/6             0           0           0           0          0        20736
Gi4/0/7             0           0           0           0          0            0
Gi4/0/8             0           0           0           0          0      3722925
Gi4/0/9             0           0           0           0          0            0
Gi4/0/10            0           0           0           0          0            0
Gi4/0/11            0           0           0           0          0            0
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi4/0/12            0           0           0           0          0            0
Gi4/0/13            0           0           0           0          0            0
Gi4/0/14            0           0           0           0          0            0
Gi4/0/15            0           0           0           0          0            0
Gi4/0/16            0           0           0           0          0            0
Gi4/0/17            0           0           0           0          0            0
Gi4/0/18            0           0           0           0          0            0
Gi5/0/1             0           0           0           0          0       782919
Gi5/0/2             0           0           0           0          0        32327
Gi5/0/3             0           0           0           0          0      1228827
Gi5/0/4             0           0           0           0          0        32398
Gi5/0/5             0           0           0           0          0    338560379
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi5/0/6             0           0           0           0          0      7477678
Gi5/0/7             0           0           0           0          0       424263
Gi5/0/8             0           0           0           0          0      7417640
Gi5/0/9             0           0           0           0          0       992286
Gi5/0/10            0           0           0           0          0      1330955
Gi5/0/11            0           0           0           0          0            0
Gi5/0/12            0           0           0           0          0            0
Gi5/0/13            0           0           0           0          0       165088
Gi5/0/14            0           0           0           0          0       165370
Te5/0/1             0           0           0           0          0            0
Gi6/0/1             0           0           0           0          0            0
Gi6/0/2             0           0           0           0          0         3172
         
Port        Align-Err     FCS-Err    Xmit-Err     Rcv-Err  UnderSize  OutDiscards
Gi6/0/3             0           0           0           0          0            0
Gi6/0/4             0           0           0           0          0        59682
Gi6/0/5             0           0           0           0          0            0
Gi6/0/6             0           0           0           0          0      6957533
Gi6/0/7             0           0           0           0          0            0
Gi6/0/8             0           0           0           0          0      6566061
Gi6/0/9             0           0           0           0          0       399085
Gi6/0/10            0           0           0           0          0       214636
Gi6/0/11            0           0           0           0          0            0
Gi6/0/12            0           0           0           0          0            0
Gi6/0/13            0           0           0           0          0            0
Gi6/0/14            0           0           0           0          0            0

----------------------------------------------------------------------------------------------------

DC1-CORE-DMZ7-SW1#sh controllers ethernet-controller gigabitEthernet 5/0/7

     Transmit GigabitEthernet5/0/7            Receive
   3649244524 Bytes                         33506397 Bytes                   
    408741698 Unicast frames              3070575545 Unicast frames          
   1627270951 Multicast frames                  8926 Multicast frames        
    892007145 Broadcast frames               3022075 Broadcast frames        
            0 Too old frames               232322419 Unicast bytes           
            0 Deferred frames                 715216 Multicast bytes         
            0 MTU exceeded frames          391229965 Broadcast bytes         
            0 1 collision frames                   0 Alignment errors        
            0 2 collision frames                   0 FCS errors              
            0 3 collision frames                   0 Oversize frames         
            0 4 collision frames                   0 Undersize frames        
            0 5 collision frames                   0 Collision fragments     
            0 6 collision frames      
            0 7 collision frames               15731 Minimum size frames     
            0 8 collision frames          2641474126 65 to 127 byte frames   
            0 9 collision frames           399186201 128 to 255 byte frames  
            0 10 collision frames          742182252 256 to 511 byte frames  
            0 11 collision frames          441241547 512 to 1023 byte frames 
            0 12 collision frames         2025057868 1024 to 1518 byte frames
            0 13 collision frames                  0 Overrun frames          
            0 14 collision frames                  0 Pause frames            
            0 15 collision frames     
            0 Excessive collisions                 0 Symbol error frames     
            0 Late collisions                      0 Invalid frames, too large
            0 VLAN discard frames         1119416117 Valid frames, too large 
            0 Excess defer frames                  0 Invalid frames, too small
      3640562 64 byte frames                       0 Valid frames, too small 
   3138053276 127 byte frames         
   2516276685 255 byte frames                      0 Too old frames          
   2269906046 511 byte frames                      0 Valid oversize frames   
   3649649690 1023 byte frames                     0 System FCS error frames 
   1078361270 1518 byte frames                     0 RxPortFifoFull drop frame
   3157034153 Too large frames        
            0 Good (1 coll) frames    
            0 Good (>1 coll) frames   

------------------------------------------------------------------------------------------------------

interface GigabitEthernet5/0/7
description ** Core ESX VMData Trunk Port **
switchport trunk allowed vlan 3000-4094
switchport mode trunk
switchport nonegotiate
spanning-tree portfast
spanning-tree bpdufilter enable
spanning-tree bpduguard enable
spanning-tree guard root
end
------------------------------------------------------------------------------------------------------

[Leo Laohoo]

Thanks for the output

Links look clean.

I had similar issues with a Exchange server.  Output drops was incrementing really fast.  Links look clean (much like your output).  So we told the admin to throttle his server down to 100 Mbps and the output drops from the switch links (8 links) to the server stopped immediately.

[mcvosi]

I realize this is old, however I thought I'd respond.

I would make sure you add "trunk" on the end of the portfast command since it's a trunk.

spanning-tree portfast trunk