excessive collisions or normal behavior?

From: D R (deep.ratan@gmail.com)
Date: Thu Dec 15 2005 - 13:13:22 GMT-3


Hi All,
I'm looking at a 2507 (in production network) that has 16 ethernet ports.
The # of collisions on these hub ports appear high - 14% in the first port,
24% in the second port, etc.
Is this behavior "normal" or does this need to be investigated?

TIA

2507a1#show hub e 0 6
Port 6 of 16 is up, link state is up
  79612280 packets input, 1948747166 bytes
  0 errors with 11124948 collisions
     (0 FCS, 0 alignment, 0 too long,
      0 short, 0 runts, 0 late,
      0 very long, 0 rate mismatches)
  3 auto partitions, last source address was 0011.431a.315f
  Last clearing of "show hub" counters never

Repeater information (Connected to Ethernet0)
  3238792950 bytes seen with 35484160 collisions, 0 hub resets
  Version/device ID 0/1 (0/1)
  Repeater config register is 0xC0
  Last clearing of "show hub" counters never

2507a1#show hub e 0 5
Port 5 of 16 is up, link state is up
  36786364 packets input, 3374326241 bytes
  0 errors with 8970977 collisions
     (0 FCS, 0 alignment, 0 too long,
      0 short, 0 runts, 0 late,
      0 very long, 0 rate mismatches)
  0 auto partitions, last source address was 0011.431a.19bf
  Last clearing of "show hub" counters never

Repeater information (Connected to Ethernet0)
  3238849675 bytes seen with 35484161 collisions, 0 hub resets
  Version/device ID 0/1 (0/1)
  Repeater config register is 0xC0
  Last clearing of "show hub" counters never



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