The monitor capture point ip cef kyiv fastethernet 0/1 both command creates a capture point named kyiv on the FastEthernet 0/1 interface. The syntax for themonitor capture point command is monitor capture point {ip | ipv6} {cef capturepointname interfacename interfacetype {both | in | out} | process switched capturepointname {both | fromus | in | out}}.

Cisco IOS Embedded Packet Capture (EPC) is a feature that you can implement to assist with tracing packets and troubleshooting issues with packet flow in and out of Cisco devices. You can create multiple capture points with unique names and parameters on a single interface? however, you can associate each capture point with only one capture buffer. To implement Cisco IOS EPC, you must perform the following steps:
1. Create a capture buffer.
2. Create a capture point.
3. Associate the capture point with the capture buffer.
4. Enable the capture point.

The monitor capture point kyiv size 256 circular command will not create a capture point named kyiv? however, the monitor capture buffer kyiv size 256 circular command would create a capture buffer named kyiv. The syntax for the monitor capture buffer command is monitor capture bufferbuffername [clear |exportexportlocation | filteraccesslist {ipaccesslist | ipexpandedlist | accesslistname} | limit {allownthpaknthpacket | duration seconds | packetcounttotalpackets | packetspersecpackets} | [maxsizeelementsize] [size buffersize] [circular | linear]]. When creating capture buffers, you can adjust several items, including buffer type, sampling interval, buffer size, and packet capture rate. Specifying the sampling interval and the buffer type will allow for the maximum number of pertinent packets to be stored in the buffer. The capture buffer contains packet data and metadata? the metadata contains a timestamp indicating when the packet was added to the buffer, the direction of transmission of the packet, the switch path, and the encapsulation type.
The monitor capture point associate kyiv exsim command will not create a capture point. The monitor capture point associate kyiv exsim command will associate a capture point named kyiv with a capture buffer named exsim. The syntax of the command to associate a capture point with a capture buffer is monitor capture point associate capture-point-name capture-buffer-name.
The monitor capture point start kyiv command will not create a capture point. The monitor capture point start kyiv command will enable a capture point named kyiv and begin the process of capturing packet data. The capture point must first be created before it can be enabled.