Technical References

Determines the percentage of available addresses that the
main server sends to the backup server for scopes on which dynamic
BOOTP is enabled. If defined, it must be defined on
the main server. If it is defined in a backup server, it is
ignored (to enable copying of configurations). If it is not
defined at all or the value is 0, the "backup-pct" is
used instead. This parameter is separate from "backup-pct"
because if dynamic BOOTP is enabled on a scope, a server
will never, even in PARTNER-DOWN state, grant leases on
addresses that are available to the other server because
they can never safely be assumed to be available again.
The MCLT has no meaning for dynamic BOOTP leases.
failover bool default = true
Enables failover configuration. If you disable this attribute,
you turn off failover on attached subnets without changing
configuration fundamentals.
load-balancing bool default = disabled
Determines whether load balancing (RFC 3074) is enabled on a failover
pair. The default is disabled. When enabled, the backup-pct is
ignored and the main and backup server evenly split the client
load and available leases for all scopes in the failover
relationship (that is, as if backup-pct were configured at 50%).
main oid(CCMCluster)
Identifies the cluster with the main server for a failover pair.
main-server ipaddr
Controls the IP address used for the failover protocol on the
main server. If this value is unset, the address specified
for the main cluster is used. Cisco recommends setting
this attribute only if the server is configured with
different interfaces for configuration management and clients
requests. Always configure the failover protocol with the
interface used to serve clients.
mclt rangetime(5m-1w) default = 60m
Sets the maximum client lead time in seconds. This attribute
controls how far ahead of the backup server that you can make
the client lease expiration. You must define this value on both
the main and backup servers, and make sure the value is
identical on both servers.
name string required,unique,immutable
Names a failover pair.
persist-lease-data-on-partner-ack bool default = true