SKOOR Documentazione

DHCP

Function	Perform tests on a DHCP server. DHCP is a protocol used by networked devices (clients) to obtain various parameters necessary for the clients to operate in an IP network. For this job to work, the SKOOR Engine collector has to be in the same subnet as the DHCP server.
Alarming	Transfer time, Response code

Function

Perform tests on a DHCP server.
DHCP is a protocol used by networked devices (clients) to obtain various parameters necessary for the clients to operate in an IP network.

For this job to work, the SKOOR Engine collector has to be in the same subnet as the DHCP server.

Alarming

Transfer time, Response code

DHCP detail

Dynamic Host Configuration Protocol was developed to automate the assignment of IP addresses, subnet masks, gateways, and other IP parameters. DHCP saves the administrator the trouble of modifying IP information every time an implementation or upgrade is conducted. End-users appreciate it since it allows for quick and simple connections to a network, often without any configuration needed.

The DHCP server must be reachable by the first interface of the collector the DHCP job runs on. If this is not the case, the correct interface must be configured in the eranger-collector.cfg on OS level (dhcp_interface = <interface-name>)

DHCP parameters

Parameter	Description
<DHCP options>	For a list of available options, refer to RFC 2132
Load default	This button asks the DHCP server for offers. This is usually a good start set to test.

DHCP values and alarm limits

Value / Alarm limit	Description
Transfer time	Time to transfer the information (in ms)
Response code	Can be one of the following 0 No error -1 General Error 1 DHCP server not found 2 Expected parameter missing 3 Received parameter differs 4 Response from wrong server
Error code	Generic job error code (see section Job error codes)

Value / Alarm limit

Description

Transfer time

Time to transfer the information (in ms)

Response code

Can be one of the following

0   No error
-1   General Error
1 DHCP server not found
2 Expected parameter missing
3   Received parameter differs
4   Response from wrong server

Error code

Generic job error code (see section Job error codes)

DHCP examples

Example 1 - Load defaults

Click the Load defaults button. The fields are filled in with the options received from the server:

Other DHCP servers will return more then these options, e.g.

Output 1

If individual options don't match or are not configured on the DHCP server, the job will enter state warning and give an info message:

Example 2 - Request an IP address

Request IP address	*

Output 2

The job output does not list the obtained IP address, only if an address was received.

Example 3 - Request a specific IP address

Request IP address	10.1.8.25