[c-nsp] Output drops on WS-X6348-RJ-45

[Peter Salanki]

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Try show queueing interface fa 1/1, probably you are running out of  
buffer space with bursty traffic.

Sincerely

Peter Salanki
CTO
Bahnhof AB (AS8473)
www.bahnhof.se
Office: +46855577132
Cell: +46709174932


30 jun 2007 kl. 17.22 skrev Robert Hass:

> Hi
>
> I have one Cisco 6506-E/Sup32 (IOS 12.2(18)SXF4) running
> WS-X6348-RJ-45 linecard and we see all the time "Output drops" at
> FE interfaces on this card.
>
> Currently we're using only 3 first FE ports from all 48. Rest uplink
> to other parts on network are on GigE ports on SUP32 (there is no
> drops/errors at these GigE ports).
>
> #sh module
> Mod Ports Card Type                              Model
> --- ----- -------------------------------------- --------------
>   1   48  48 port 10/100 mb RJ45                 WS-X6348-RJ-45
>   5    9  Supervisor Engine 32 8GE (Active)      WS-SUP32-GE-3B
>
> On interfaces there is no input/output errors, CRC, overruns,  
> ignored etc.
> I'm sure that there is no oversubscribtion on these ports. So what
> causeing 'Output drops' ? Can I debug this in anyway ?
>
> Please see below 'show interface' outputs and interfaces  
> configuration 'sh run'.
>
> #sh run
> ...
> FastEthernet1/1 is up, line protocol is up (connected)
>   Hardware is C6k 100Mb 802.3, address is 0001.c96a.8e84 (bia  
> 0001.c96a.8e84)
>   Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output  
> drops: 9768
>   Queueing strategy: fifo
>   Output queue: 0/40 (size/max)
>   30 second input rate 17809000 bits/sec, 5102 packets/sec
>   30 second output rate 5417000 bits/sec, 5399 packets/sec
> ...
> FastEthernet1/2 is up, line protocol is up (connected)
>   Hardware is C6k 100Mb 802.3, address is 0001.c96a.8e85 (bia  
> 0001.c96a.8e85)
>   30 second input rate 0 bits/sec, 0 packets/sec
>   30 second output rate 5000 bits/sec, 11 packets/sec
> ...
> FastEthernet1/3 is up, line protocol is up (connected)
>   Hardware is C6k 100Mb 802.3, address is 0001.c96a.8e86 (bia  
> 0001.c96a.8e86)
>   Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output  
> drops: 23786
>   Queueing strategy: fifo
>   Output queue: 0/40 (size/max)
>   30 second input rate 15841000 bits/sec, 4875 packets/sec
>   30 second output rate 29461000 bits/sec, 5477 packets/sec
>
> #sh run
> ....
> interface FastEthernet1/1
>  description Customer ID00323
>  switchport
>  switchport access vlan 304
>  switchport mode access
>  no ip address
>  logging event link-status
>  load-interval 30
>  no cdp enable
>  spanning-tree portfast
>  spanning-tree bpdufilter enable
> !
> interface FastEthernet1/2
>  description OOB MGMT - Nortel DWDM
>  switchport
>  switchport access vlan 150
>  switchport mode access
>  no ip address
>  logging event link-status
>  load-interval 30
>  speed 10
>  no cdp enable
>  spanning-tree portfast
> !
> interface FastEthernet1/3
>  description Customer ID00016
>  switchport
>  switchport trunk encapsulation dot1q
>  switchport trunk allowed vlan 236,238
>  switchport mode trunk
>  switchport nonegotiate
>  no ip address
>  logging event link-status
>  logging event bundle-status
>  logging event trunk-status
>  load-interval 30
>  speed 100
>  duplex full
>  no cdp enable
>  spanning-tree portfast trunk
>  spanning-tree bpdufilter enable
> !
>
> Thanks,
> Robert
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