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Output drops on 6509 with X6248-TEL

At a bit of a loss here.

I have some older hardware, a WS6509 R7000 Rev 2.0 with several  WS-X6248-TEL line cards.  One of the FastEthernet ports is connected to a Cisco 7120-T3. The port is hard coded for 100/Full and trunking quite a few VLANs (port config below). I've also included the output from "show int fa 3/32" and "show int counters errors | i 3/32"

I have already tried another port (was on 3/25) but that did not change anything. The issue does not appear to be related to traffic load since drops were still occuring when traffic was less than 10Mb, but is more noticible (for obvious reasons) when traffic is 30-50Mb.

Thanks

interface FastEthernet3/32

speed 100

duplex full

switchport

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 5,9,12-18,20-23,33-35,64,949,955,956,958

switchport mode trunk

end

interface FastEthernet0/1

no ip address

duplex full

speed 100

interface FastEthernet0/1.5

encapsulation dot1Q 5

  MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,

     reliability 255/255, txload 112/255, rxload 112/255

  Encapsulation ARPA, loopback not set

  Full-duplex, 100Mb/s

  input flow-control is off, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 00:00:00, output 00:00:02, output hang never

  Last clearing of "show interface" counters 02:10:12

Input queue: 0/2000/781/0 (size/max/drops/flushes); Total output drops: 617150

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 44054000 bits/sec, 6197 packets/sec

  5 minute output rate 44106000 bits/sec, 6185 packets/sec

     33801328 packets input, 30261976636 bytes, 0 no buffer

     Received 18110 broadcasts (11923 multicast)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     33869738 packets output, 30310452716 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 PAUSE output

     0 output buffer failures, 0 output buffers swapped out

Port        Align-Err    FCS-Err   Xmit-Err    Rcv-Err UnderSize OutDiscards

Fa3/32              0          0          0                0             0            623827

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