Capturing traffic in cisco devices.

Hi all,
Id like to ask how I can capture traffic
in Cisco routers? Something like in Cisco PIX firewalls. It is very nice in Cisco PIXs when I can troubleshoot outgoing and incoming traffic throught some interface of PIX. With capture capability.
Any idea?
BR
jl

Try to use: debug ip packet command with access-list parameter. Be careful! Do not start just debug ip packet, it can be very difficult for your router.
Example here: http://cisco.com/en/US/tech/tk648/tk361/technologies_configuration_example09186a0080100548.shtml#debugtraffic

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