3Com VCX V7000, Installation Manual

Page: 395 / 488

ISC Server 393
Sample DHCP Configuration File (continued)
option ntp-servers 10.10.2.50, 10.10.2.6;
The previous line defines the IP addresses of Network Time Protocol
servers that the branch office VCX server can use to obtain accurate
time-of-day information. 3Com recommends that you specify at least two
NTP server addresses and one of them should be another VCX server in
your system. In this sample file 10.10.2.50 is the IP address of an NTP
server located in the regional office and 10.10.2.6 is the IP address of the
Call Processing Server in the same regional office.
CHANGE FOR EACH BRANCH: Change these IP addresses only if you
want a branch office VCX server to use different NTP servers than other
branch office VCX servers use.
CAUTION: If VCX systems are not synchronized via NTP, timing-related
problems can occur.
vendor-option-space vendor-spec-option;
The previous line creates a space to contain several vendor-spec-options.
option vendor-spec-option.snmp-trap-dest "10.10.2.20";
The previous line defines the IP address of the network management
station to which SNMP (System Network Management Protocol) trap
messages should be sent. This line can contain multiple comma-separated
IP addresses if you want to specify more than one network management
station.
CHANGE FOR EACH BRANCH: Change this IP address only if you want
to manage some branch office VCX servers from one management
station and other branch office VCX servers from one or more different
management stations.
option time-offset -300;
The previous line defines the time offset, in minutes, of the branch office
time zone from the Prime Meridian. A positive value indicates that the
location is East of the Prime Meridian and a negative value indicates that
the branch office time zone is West. The value in the sample indicates a
times zone that is 5 hours (300 minutes) West.