Address boxIPAddress, Mask boxIPMask | Patton electronic Model 2604

T1/E1 DACS Administrators’ Reference Guide	15 • System

User Password (boxSnmpMonitorPassword)

This accesses the user monitoring password for read only access of certain selected information. Not all param- eters shown using the superuser password are displayed under the user password. (see ﬁgure 36 on page 102).

LAN IP

This portion of the System—Modifywindow contains conﬁgurable information for the IP addressing of the Ethernet LAN port.

Method to Obtain Address (boxIPAddressTechnique)

This indicates how to obtain the LAN IP address (see ﬁgure 36 on page 102). The following options are avail- able:

•disable(0)—Ethernet port is disabled (DACS T1 to T1 usage only)

•static(1)—LAN IP address is obtained from EIA-232 Control Port

•rarp (2)—Reverse Address Resolution Protocol—A protocol deﬁned in RFC 903 which provides the reverse function of ARP. RARP maps a hardware address (MAC address) to an Internet address. It is used primarily by diskless nodes, when they ﬁrst initialize, to ﬁnd their Internet address.

•bootp(3)—The Bootstrap Protocol. A protocol described in RFCs 951 and 1084 and used for booting disk- less workstations.

•dhcp(4)—Dynamic Host Conﬁguration Protocol—A protocol introduced by Microsoft on their NT server with version 3.5 in late 1994. This protocol provides a means to dynamically allocate IP addresses to IBM PCs running on a Microsoft Windows local area network. The system administrator assigns a range of IP addresses to DHCP and each client PC on the LAN has its TCP/IP software conﬁgured to request an IP address from the DHCP server. The request and grant process uses a lease concept with a controllable time period. More information can be found in the Microsoft documentation on NT Server.