04-06-2009 06:56 AM - edited 03-06-2019 05:01 AM
Hi
when we see serial link utilisation is high, how do we find the IP add of person doing heavy downloading/ busy talker on the network ?
Thanks
04-06-2009 07:04 AM
Hi,
The best way would be to enable netflow on your router and install a netflow collector.
Once netflow is enabled you can try using a few of the commands below to see traffic flows, however you'll see things much clearer with a proper netflow collector (there are a few free ones out there)
show ip cache flow
show ip cache verbose flow
Regards
04-06-2009 07:19 AM
To add to James' response, if you don't have a collector, you can enable top-talkers on the router too.
ip flow-top-talkers
router(config-flow-top-talkers)# sort-by bytes
router(config-flow-top-talkers)# top 10
The above will configure the top 10 (and you can set lower or higher if you want).
To view:
router# sh ip flow top-talkers
HTH,
John
04-06-2009 11:43 AM
NB:
Release Modification
12.2(25)S
This command was introduced.
12.3(11)T
This feature was integrated into Cisco IOS Release 12.3(11)T.
12.2(27)SBC
This command was integrated into Cisco IOS Release 12.2(27)SBC.
12.2(33)SRA
This command was integrated into Cisco IOS Release 12.2(33)SRA.
Usage Guidelines
Enabling NetFlow
You must enable NetFlow on at least one interface in the router; and configure NetFlow top talkers before you can use the show ip flow top-talkers command to display the traffic statistics for the unaggregated top flows in the network. NetFlow top talkers also requires that you configure the sort-by and top commands. Optionally, the match command can be configured to specify additional matching criteria.
08-07-2014 10:45 PM
Could someone explain this with example plz, i mean with out put to get better understanding
Thanks
08-08-2014 01:41 AM
you can use not only netflow
also interface commands
ip accounting
and
ip nbar protocol-discovery
to see traffik use commands
sh ip accounting
sh ip bnar protocol-discovery
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