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338 APPENDIX B: AUTOMATED BRANCH OFFICE INSTALLATION
Sample DHCP Configuration File (continued)
use-host-decl-names on;
The previous line forces the DHCP service to supply all host names for
DHCP clients.
ddns-update-style none;
The previous line forces the DHCP service to not update any DNS servers.
option space vendor-spec-option;
option vendor-spec-option.snmp-trap-dest code 11 = string;
The previous lines define the format for the destination to which SNMP
(Simple Network Management Protocol) trap messages are to be sent.
Typically, the destination is the IP address of a PC or workstation on which
you run your SNMP software. The first line defines the space for the
vendor-spec-option. The second line adds a specific, SNMP-related
parameter for the trap destination.
class "BRANCH_CALLP"{
match option vendor-class-identifier;
}
The previous lines define a class called BRANCH_CALLP (the name is your
choice). DHCP clients become members of the class based on the match
statement. This class contains the branch office VCX servers.
class "GATEWAY" {
match option vendor-class-identifier;
}
The previous three lines define a class called GATEWAY (the name is your
choice). This class contains the PSTN gateways that are located in the
branch offices.
class "PHONES" {
match substring (option vendor-class-identifier,1,11);
}
The previous three lines define a class called PHONES (the name is your
choice). This class contains the branch office telephones.