Service manual

Cyclades-TS
87
Appendix A - Linux
Installation & Service Manual
Two files are related to DHCP:
/bin/handle_dhcp - the script which is run by the DHCP client each time an IP address negotiation takes place.
/etc/network/dhcpcd_cmd - contains a command that activates the DHCP client (used by the cy_ras program).
Its factory contents are:
/sbin/dhcpcd -c /sbin/handle_dhcp
The options available that can be used on this command line are:
-D This option forces dhcpcd to set the domain name of the host to the domain name parameter sent by the
DHCP server. The default option is to NOT set the domain name of the host to the domain name parameter
sent by the DHCP server.
-H This option forces dhcpcd to set the host name of the host to the hostname parameter sent by the DHCP
server. The default option is to NOT set the host name of the host to the hostname parameter sent by the DHCP
server.
-R This option prevents dhcpcd from replacing the existing /etc/resolv.conf file.
The user should not modify the -c /sbin/handle_dhcp option.
Data Buffering
Since version 1.3.2 of the Cyclades-TS software, additional ramdisks can be created and used, for example, to
buffer data. This removed the previous 700 kbyte restriction for all TS ports. Data buffering files are created in
the directory /var/run/DB. Previously, data buffering files were named ttyS<nn>.data (where <nn> is the port
number). Now, if the parameter s<nn>.serverfarm is configured for the port <nn>, this name will be used. For
example, if the serverfarm is called bunny, the data buffering file will be named bunny.data.