Configuring an Internal DHCP Server Configuring DHCP Server on OmniSwitch
OmniSwitch AOS Release 8 Network Configuration Guide December 2017 page 22-9
policy subnet-unavailable-descent-threshold 85;
policy minimum-requested-lifetime 800;
option renewal-time 700000; <- Options applicable
option rebinding-time 1000000;
option preferred-lifetime 2000000;
option valid-lifetime 3000000;
option dns-recursive-name-server 2001:468:603:c0e0::12001:468:603:c0e0::2;
v6-manual-dhcp duid 00-02-00-00-00-09-0c-c0-84-d3-03-00-0a-11
2620:0000:0060:1480::1f01 { <- Manual DUID mapping
option posix-timezone "MST7MDT6,116/02:00:00,298/02:00:00";
}
v6-dynamic-dhcp range 2620:0000:0060:1480::2000 2620:0000:0060:1480::2500
{ <- Dynamic range of IPs
policy minimum-requested-lifetime 650;
policy rapid-commit-enabled true;
policy excluded-user-classes "bronze" "gold" "silver";
policy excluded-vendor-classes enterprise 311 "MSFT 5.0" enterprise 546
"SIP Phone";
option dns-recursive-name-server 2620:0000:0060:1480::3
2620:0000:0060:1480::4;
option domain-search-list malvern2.lucent.com murrayhill2.lucent.com;
option posix-timezone "CST6CDT5,116/02:00:00,298/02:00:00";
option sntp-servers 2620:0000:0060:1480::5 2620:0000:0060:1480::6;
}
}
v6-subnet 2620:0000:0060:1481/64 {
policy minimum-requested-lifetime 800;
v6-manual-dhcp duid 00-02-00-00-00-09-0c-cd-84-d3-03-00-0a-14
2620:0000:0060:1481::1f01 {
option posix-timezone "MST7MDT6,116/02:00:00,298/02:00:00";
}
v6-manual-dhcp duid 00-02-00-00-00-09-0c-cd-84-d3-03-00-0a-13 iaid 1001
2620:0000:0060:1481::1f02 {
option posix-timezone "MST7MDT6,116/02:00:00,298/02:00:00";
}
v6-manual-dhcp duid 00-02-00-00-00-09-0c-cd-84-d3-03-00-0a-13 iaid 1002
2620:0000:0060:1481::1f03 {
option posix-timezone "MST7MDT6,116/02:00:00,298/02:00:00";
dhcpd(v6).conf.lastgood File
The dhcpd(v6).conf.lastgood file is used as a backup file when the dhcpd(v6).conf file is corrupted. If
the dhcpd(v6).conf file is affected, then the DHCP server generates an error. In such an instance, the
DHCP server configuration is updated according to the dhcpd(v6).conf.lastgood file. The
dhcpd(v6).conf.lastgood file is now used to configure the internal DHCP server, provide IP addresses on
lease, and maintain DHCP related information.
The dhcpd(v6).conf.lastgood file is overwritten with the configurations in the dhcpd(v6).conf file when
the DHCP configurations are setup or updated and the internal DHCP server is restarted successfully. At
this point, the dhcpd(v6).conf and dhcpd(v6).conf.lastgood files are identical.
If any modifications are made in the dhcpd(v6).conf file, the DHCP server must be restarted so that the
configuration is updated on the OmniSwitch. The dhcp-server restart command automatically updates
the dhcpd(v6).conf and dhcpd(v6).conf.lastgood files.
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