[c-nsp] 6500 netflow export and the switch cpu

Jon Lewis jlewis at lewis.org
Thu Sep 11 12:51:17 EDT 2008


On Thu, 11 Sep 2008, Phil Mayers wrote:

> What do the following say:
>
> sh mls netflow table-contention detailed

Earl in Module 5
Detailed Netflow CAM (TCAM and ICAM) Utilization
================================================
TCAM Utilization             :   100%
ICAM Utilization             :   7%
Netflow TCAM count           :   262026
Netflow ICAM count           :   10
Netflow Creation Failures    :   456680
Netflow CAM aliases          :   0

I guess I need to get more aggressive on the flow aging.  I've been using
mls aging fast time 8 threshold 3
mls aging long 480
mls aging normal 32


> sh mls netflow flowmask

  current ip   flowmask for unicast:   if-full
  current ipv6 flowmask for unicast:    null

> sh mls nde

  Netflow Data Export enabled
  Exporting flows to [removed]
  Exporting flows from [removed]
  Version: 5
  Include Filter not configured
  Exclude Filter not configured
  Total Netflow Data Export Packets are:
     3738467024 packets, 0 no packets, 1041361295 records
  Total Netflow Data Export Send Errors:
         IPWRITE_NO_FIB = 0
         IPWRITE_ADJ_FAILED = 0
         IPWRITE_PROCESS = 0
         IPWRITE_ENQUEUE_FAILED = 0
         IPWRITE_IPC_FAILED = 0
         IPWRITE_OUTPUT_FAILED = 0
         IPWRITE_MTU_FAILED = 0
         IPWRITE_ENCAPFIX_FAILED = 0
  Netflow Aggregation Disabled

> sh platform hardware capacity netflow
#sh platform hardware capacity netflow
                                 ^
% Invalid input detected at '^' marker.

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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