[nsp] multicast flows and dev/null

[Hank Nussbacher]

At 05:26 PM 04-02-04 +0100, Francisco Gracia wrote:

I never did find out why it was happening and how to fix it.  I'm still 
curious.

-Hank

>Hi,
>
>I am afraid I am seeing the same issue you saw in your network and cause of
>your posted message of Mon Aug 4 19:27:44 EDT 2003:
>
>#show ip cache flow | include Null
>AT1/0/0.1     193.50.20.65    Null          224.2.127.254   11 8170 2693
>447
>AT1/0/0.1     193.50.20.65    Null          224.2.127.254   11 816D 2693
>293
>AT1/0/0.1     207.75.164.245  Null          224.2.127.254   11 0404 2693
>33
>AT1/0/0.1     193.49.160.35   Null          224.2.127.254   11 0834 2693
>472
>AT1/0/0.1     129.116.65.3    Null          224.2.127.254   11 0404 2693
>80
>AT1/0/0.1     128.59.244.235  Null          224.2.127.254   11 0405 2693
>6
>AT1/0/0.1     130.206.1.145   Null          224.2.127.254   11 8C6E 2693
>47
>AT1/0/0.1     131.247.105.13  Null          224.2.127.254   11 0408 2693
>15
>AT1/0/0.1     131.247.105.12  Null          224.2.127.254   11 0409 2693
>27
>AT1/0/0.1     131.247.105.11  Null          224.2.127.254   11 0404 2693
>1
>AT1/0/0.1     131.247.105.12  Null          224.2.127.254   11 0407 2693
>27
>AT1/0/0.1     192.87.116.22   Null          224.2.127.254   11 0404 2693
>36
>Se6/0/0       172.16.2.2      Null          192.168.2.2     01 0000 0B00
>1
>AT1/0/0.1     158.36.47.163   Null          224.2.127.254   11 82CB 2693
>1
>AT1/0/0.1     140.192.200.116 Null          224.2.127.254   11 0403 2693
>40
>AT1/0/0.1     217.37.157.41   Null          130.206.205.213 06 0FBE 01BD
>1
>AT1/0/0.1     140.142.17.187  Null          224.2.127.254   11 0403 2693
>1
>AT1/0/0.1     163.117.131.10  Null          224.2.127.254   11 800C 2693
>46
>AT1/0/0.1     128.91.99.214   Null          224.2.127.254   11 0403 2693
>988
>AT1/0/0.1     128.178.10.2    Null          224.2.127.254   11 2693 2693
>5
>AT1/0/0.1     129.132.183.162 Null          224.2.127.254   11 0407 2693
>71
>AT1/0/0.1     150.216.6.91    Null          224.2.127.254   11 0405 2693
>39
>AT1/0/0.1     128.253.30.199  Null          224.2.127.254   11 0402 2693
>35
>AT1/0/0.1     128.253.30.200  Null          224.2.127.254   11 0402 2693
>35
>AT1/0/0.1     128.205.10.184  Null          224.2.127.254   11 0403 2693
>36
>AT1/0/0.1     128.205.10.177  Null          224.2.127.254   11 0403 2693
>44
>AT1/0/0.1     128.205.10.177  Null          224.2.127.254   11 0405 2693
>33
>AT1/0/0.1     128.205.10.30   Null          224.2.127.254   11 0406 2693
>68
>AT1/0/0.1     171.69.89.31    Null          224.2.127.254   11 0411 2693
>35
>AT1/0/0.1     131.111.168.117 Null          224.2.127.254   11 0404 2693
>35
>AT1/0/0.1     131.111.168.117 Null          224.2.127.254   11 0405 2693
>35
>AT1/0/0.1     131.111.168.118 Null          224.2.127.254   11 0405 2693
>35
>AT1/0/0.1     131.111.168.119 Null          224.2.127.254   11 0405 2693
>33
>AT1/0/0.1     131.111.168.118 Null          224.2.127.254   11 0404 2693
>35
>AT1/0/0.1     131.111.168.119 Null          224.2.127.254   11 0403 2693
>33
>AT1/0/0.1     131.111.168.120 Null          224.2.127.254   11 0406 2693
>34
>AT1/0/0.1     131.111.168.120 Null          224.2.127.254   11 0403 2693
>10
>AT1/0/0.1     128.114.3.66    Null          224.2.127.254   11 0408 2693
>35
>AT1/0/0.1     128.114.3.67    Null          224.2.127.254   11 0409 2693
>36
>#
>AT1/0/0.1      134.130.3.75    Null           224.2.127.254   11 00  10
>1
>878C /0  0                     2693 /0  0     0.0.0.0               455
>0.0
>
>
>What was causing this issue? Could you lend me a hand?
>
>Regards,
>
>FG.
>
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