Hi Everyone

When I look at my sflow statistics in ntop, I am getting differences
between values that I do not understand.

Looking at the flow statistics in the configuration of my sflow device I
get

Flow Statistics
Received Flows 
Flow Senders 163.119.xx.xx [13,383 pkts]
  
Number of Packets Received 13,383 
Number of Packets with Bad Version 0 
Number of Packets Processed 13,383 
Number of Valid Flows Received 0 
Number of v2 Flows Received 0 
Number of v4 Flows Received 0 
Number of v5 Flows Received 13,383 
  
Discarded Flows 
Number of Flows with Bad Data 0 
Total Number of Flows Processed 0

So I can see over 13000 pkts sent from the switch, but when I go to
summary/Traffic I get the following

Traffic Report for 'xxxxxxxx' [switch]
Packets Dropped (ntop) 0.0% 0 
Total Received (ntop) 131 
Total Packets Processed 1 
Unicast 100.0% 1 
Broadcast 0.0% 0 
Multicast 0.0% 0 
Shortest 172 bytes 
Average Size 96 bytes 
Longest 172 bytes 
<= 64 bytes 0.0% 0 
64 to 128 bytes 0.0% 0 
129 to 256 bytes 100.0% 1 
257 to 512 bytes 0.0% 0 
513 to 1024 bytes 0.0% 0 
1025 to 1518 bytes 0.0% 0 
> 1518 bytes 0.0% 0 
Packets too long [> 1514] 0.0% 0 
Bad Packets (Checksum) 0.0% 0 
 
Traffic Total 172 [1 Pkts] 
IP Traffic 0 [0 Pkts] 
Non IP Traffic 172 

In addition I have no log entries after 11.30 yesterday, I would say it
has crashed, except that the web interface is still working and my sflow
flow statistics count is still increasing..
 
What have I configured wrongly, or what do I need to do to please?

Martin
 


Martin Macleod-Brown | Infrastructure Engineer - Networks & Security
Infrastructure Team
London Business School | Regent's Park | London NW1 4SA | United Kingdom
Switchboard +44 (0)20 7000 7000 | Direct line +44 (0)20 7000 7772 |
Mobile +44 (0)796 690 7772 | Email [EMAIL PROTECTED]

www.london.edu | London experience. World impact.

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