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Dhcp client simulator software full#

If the number of simulated clients exceedsĦ5535, three bytes will be randomized and so on. One which precedes it (random-offset - 1). Randomized in this case: the byte which randomization offset parameter points to, and the Note, that two last bytes of the client identifier will be If the number of simulated clients is between 25, Of simulated clients is between 1 and 255, only one byte (to which randomization offset Number of bytes being randomized depends on the number of simulated clients. Points to the end (not the beginning) of the client identifier (or HW address field). Template where randomization should be performed. The -O random-offset option allows specification of the offset in the Is necessary to randomize the client identifier (or HW address in DHCPv4) in the packetĬreated from it. Since packets for each client are generated from the same template file, it

In many scenarios, perfdhcp needs to simulate multiple clients (having unique client Into this field before sending the packet to the server. If the offset is specified, perfdhcp will inject the current elapsed time value For example, the -E time-offset switch specifies the offset of the DHCPv6 Elapsed Time option in the packet Specify offsets of the data fields being modified in outbound packets. The template files should be used in conjunction with the command line parameters which Template file is parsed (so in the file, '12B4' is the same as '12 B4' which is the same The template file must not contain anyĬharacters other than hexadecimal digits and spaces. The template file holds the DHCP packet represented as a stream of ASCII hexadecimalĭigits and it excludes any IP/UDP stack headers. (Similar determination applies to DHCPv4's DISCOVER and REQUEST packets.)

Pattern for SOLICIT packets, the second as the pattern for REQUEST packets.

With two template files given on the command line, the first will be used as the.

Packets: perfdhcp will generate the REQUEST packets.

With one template file specified, that file will be used as the pattern for SOLICIT.

With no template files specified on the command line, perfdhcp will generate both.

Up to two template files can be specified on the command line, each file representing theĬontents of a particular type of packet, the type being determined by the test beingĬarried out. This may be used to discover performance bottlenecks for different serverĬonfigurations (e.g. The customized packet may contain a DHCPv6 ORO to request a set of options to be returnedīy the server, or it may contain the Client FQDN option to request that server performsĭNS updates. Specification of template files that determine the contents of the packets. To allow the contents of packets sent to the server to be customized, perfdhcp allows the Perfdhcp, the elapsed time, or the number of requests dropped by the server.

Test can be limited by setting a threshold on any or all of the number of requests made by When running a performance test, perfdhcp will exchange packets with the server under testĪs fast as possible unless the -r is given to limit the request rate. RELEASE messages at a specified rate in parallel with the DHCPv6 four-way exchanges. It is also possible to configure perfdhcp to send DHCPv6 RENEW and An option is provided to run tests using the initial two-packet exchange

Dhcp client simulator software full#

It isĪble to test both IPv4 and IPv6 servers, and provides statistics concerning response timesĪnd the number of requests that are dropped.īy default, tests are run using the full four-packet exchange sequence (DORA for DHCPv4, It provides a way of measuring the performance ofĭHCP servers by generating large amounts of traffic from simulated multiple clients. ĭESCRIPTION perfdhcp is a DHCP benchmarking tool.