User`s manual

Mediant 1000
H.323 User's Manual 386 Document #: LTRT-83401
C.10.1 BootP Preferences
ARP is a common acronym for Address Resolution Protocol, and is the method used by all
Internet devices to determine the link layer address, such as the Ethernet MAC address, in
order to route Datagrams to devices that are on the same subnet.
When ARP Manipulation is enabled on this screen, the BootP Tool creates an ARP cache
entry on your computer when it receives a BootP BootRequest from the VoIP gateway.
Your computer uses this information to send messages to the VoIP gateway without using
ARP again. This is particularly useful when the gateway does not yet have an IP address
and, therefore, cannot respond to an ARP.
Because this feature creates an entry in the computer ARP cache, Administrator Privileges
are required. If the computer is not set to allow administrator privileges, ARP Manipulation
cannot be enabled.
 ARP Manipulation Enabled: Enable ARP Manipulation to remotely reset a gateway
that does not yet have a valid IP address.
If ARP Manipulation is enabled, the following two commands are available.
• Reply Type: Reply to a BootRequest can be either Broadcast or Unicast. The
default for the BootP Tool is Broadcast. In order for the reply to be set to
Unicast, ARP Manipulation must first be enabled. This then enables the BootP
Tool to find the MAC address for the client in the ARP cache so that it can send a
message directly to the requesting device. Normally, this setting can be left at
Broadcast.
• ARP Type: The type of entry made into the ARP cache on the computer, once
ARP Manipulation is enabled, can be either Dynamic or Static. Dynamic entries
expire after a period of time, keeping the cache clean so that stale entries do not
consume computer resources. The Dynamic setting is the default setting and the
setting most often used. Static entries do not expire.
 Number of Timed Replies: This feature is useful for communicating to VoIP
gateways that are located behind a firewall that would block their BootRequest
messages from getting through to the computer that is running the BootP Tool. You
can set this value to any whole digit. Once set, the BootP Tool can send that number
of BootReply messages to the destination immediately after you send a remote reset
to a VoIP gateway at a valid IP address. This enables the replies to get through to the
VoIP gateway even if the BootRequest is blocked by the firewall. To turn off this
feature, set the Number of Timed Replies = 0.
C.10.2 TFTP Preferences
 Enabled: To enable the TFTP functionality of the BootP Tool, select the check box. If
you want to use another TFTP application, other than the one included with the BootP
Tool, unselect the box.
 On Interface: This pull down menu displays all network interfaces currently available
on the computer. Select the interface that you want to use for the TFTP. Normally,
there is only one choice.
 Directory: This option is enabled only when the TFTP is enabled. Use this parameter
to specify the folder that contains the files for the TFTP utility to manage (cmp, ini, Call
Progress Tones, etc.).
 Boot File Mask: Boot File Mask specifies the file extension used by the TFTP utility
for the boot file that is included in the BootReply message. This is the file that contains
VoIP gateway software and normally appears as cmp.
 ini File Mask: ini File mask specifies the file extension used by the TFTP utility for the
configuration file that is included in the BootReply message. This is the file that
contains VoIP gateway configuration parameters and normally appears as ini.