I'm still trying to get ISC dhcp to work in a redundnat fashion where I
have 2 machines, and they share an address pool.
Here's where I am on this.
Well I thoguht I had it working for a minute.
The executbale is _really_ picky about the syntax od the config file, and I
found some help at:
http://www.lithodyne.net/docs/dhcp/dhcp-4.html#ss4.3
So, I wound up with this on the master machine:
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
# option definitions common to all supported networks...
option domain-name fas.com;
option domain-name-servers 205.159.77.224, 205.159.77.225;
default-lease-time 600;
max-lease-time 7200;
# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
authoritative;
# ad-hoc DNS update scheme - set to none to disable dynamic DNS updates.
ddns-update-style interim;
ignore client-updates;
option domain-name fas.com;
ddns-domainname fas.com;
zone fas.com. {
primary 127.0.0.1;
}
# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
# log-facility local7;
# No service will be given on this subnet, but declaring it helps the
# DHCP server to understand the network topology.
subnet 10.152.187.0 netmask 255.255.255.0 {
}
failover peer pool {
primary;
address black.fas.com;
port 519;
peer address cindy.fas.com;
peer port 520;
split 128;
max-response-delay 60;
max-unacked-updates 10;
mclt 3600;
load balance max seconds 3;
}
subnet 205.159.77.0 netmask 255.255.255.0 {
pool {
failover peer pool;
range 205.159.77.50 205.159.77.75;
deny dynamic bootp clients;
}
option routers 205.159.77.234;
}
And this on the slave:
# dhcpd.conf
#
# Sample configuration file for ISC dhcpd
#
# option definitions common to all supported networks...
option domain-name fas.com;
option domain-name-servers 205.159.77.224, 205.159.77.225;
default-lease-time 600;
max-lease-time 7200;
# If this DHCP server is the official DHCP server for the local
# network, the authoritative directive should be uncommented.
authoritative;
# ad-hoc DNS update scheme - set to none to disable dynamic DNS updates.
ddns-update-style interim;
ignore client-updates;
option domain-name fas.com;
ddns-domainname fas.com;
zone fas.com. {
primary 127.0.0.1;
}
# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
# log-facility local7;
# No service will be given on this subnet, but declaring it helps the
# DHCP server to understand the network topology.
subnet 10.152.187.0 netmask 255.255.255.0 {
}
failover peer pool {
secondary;
address cindy.fas.com;
port 519;
peer address black.fas.com;
peer port 520;
max-response-delay 60;
max-unacked-updates 10;
mclt 3600;
load balance max seconds 3;
}
subnet 205.159.77.0 netmask 255.255.255.0 {
pool {
failover peer pool;
range 205.159.77.50 205.159.77.75;
deny dynamic bootp clients;
}
option routers 205.159.77.234;
}
And both sides started up OK. But when I booted one of the OpenBSD machines
as a client it failed to get an address.
Looking at tcpdump it _si_ a bootp packet that it sends, so I'm wondering
if this line is the problem?
deny dynamic bootp clients;
Any ideas?
--
They that would give up essential liberty for temporary safety deserve
neither liberty nor safety.
-- Benjamin Franklin
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