checking the router status

sho ip int brief

perhaps?

I do not think this command :

--------------------------------------------------------------- #sh ip int brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 192.168.1.251 YES NVRAM up up GigabitEthernet0/1 10.10.1.251 YES NVRAM up up Serial0/0/0:0 unassigned YES unset down down Serial0/0/0:1 unassigned YES unset down down

---------------------------------------------------------------

As above, it can not display the line traffic nor which ip address occupies the line

guys, Any other commands ?

THX

Then you are not looking for a router interface command. You are looking for detailed information about traffic flows, which can only be provided by netflow (which exports the ip cache-flow data to a collector for analysis and reporting). Only other commands that can give you a bit of visibility (but nowhere near as good as netflow) is installing access lists and logging hits or debugging.