HP Web Jetadmin Software Bedienungsanleitung PDF herunterladen (Seite 15)

Congure the HP Web Jetadmin Service to Restart Automatically

It is recommended to congure HP Web Jetadmin to restart automatically whenever the HP Web Jetadmin

service fails. If, for example, the database is inaccessible, the HP Web Jetadmin service will be stopped and then

automatically restarted. The HP Web Jetadmin service will wait for the database to become accessible and then

the HP Web Jetadmin service becomes live.

HP Web Jetadmin installs an additional service named HPWSProAdapter. The HPWSProAdapter service facilitates

communication with certain HP device models and must be left running. You must also perform the steps in this

section for the HPWSProAdapter service.

To congure the HP Web Jetadmin service to restart automatically, follow these steps.

1. Access the Windows Control Panel and select Administrative Tools.

2. Select Services and then select HPWJA Service.

3. Right-click and select Properties from the menu.

4. Click the Recovery tab. For the First failure, Second failure, and Subsequent failures, select Restart the

service.

5. Click OK.

Ports

HP Web Jetadmin listens continuously on several ports and opens other ports for specic functionality. The

following table lists the ports that HP Web Jetadmin uses.

NOTE: HP Web Jetadmin uses Internet Control Message Protocol (ICMP) in the discovery process.

HP Web Jetadmin sends an ICMP echo request to determine if the IP is active.

Port number Type

Inbound (I) or

Outbound (O)

Description

69 UDP I TFTP Incoming Port: HP Web Jetadmin uses this port as a staging area for

rmware images during HP Jetdirect rmware

updates. Through SNMP,

HP Web Jetadmin triggers HP Jetdirect to retrieve rmware through this port.

80 TCP O HP Web Jetadmin uses this port to qualify the link to the HP Embedded Web

Server on the device and to retrieve the rmware images from the web.

161 UDP O SNMP: HP Web Jetadmin and other management applications use SNMP to

communicate with and manage devices. HP Web Jetadmin uses this port on

the printer to issue Set and Get commands to the SNMP agent.

427 UDP I SLP Listen: HP Jetdirect-connected devices use Service Location Protocol

(SLP) t

o advertise their existence. When the passive SLP discovery feature is

enabled on HP Web Jetadmin, devices send multicast packets to this port on

the HP Web Jetadmin server.

443 TCP O HTTPS: The HP Web Jetadmin service and HPWSProAdapter service send

device congurations and queries to this port over HTTPS.

HPWSProAdapter uses this port to communicate with devices that do not

support Web Services and are congured to redirect all of the network trac

to HTTPS.

445 UDP O WMI Communication: Windows Management Instrumentation (WMI) is a

protocol on Microsoft Windows hosts. HP Web Jetadmin uses WMI to detect

the presence of a printer on the Windows host. This is one of the ports on the

ENWW Ports 11

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 36 37

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