leases-expiration.json 2.57 KB
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// This is an example configuration file for DHCPv6 server in Kea.
// It provides parameters controlling processing of expired leases,
// a.k.a. leases reclamation.
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{ "Dhcp6":

{
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// Kea is told to listen on ethX interface only.
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  "interfaces-config": {
    "interfaces": [ "ethX" ]
  },

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// We need to specify the the database used to store leases. As of
// September 2016, four database backends are supported: MySQL,
// PostgreSQL, Cassandra, and the in-memory database, Memfile.
// We'll use memfile  because it doesn't require any prior set up.
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  "lease-database": {
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      "type": "memfile",
      "lfc-interval": 3600
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  },

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// The following parameters control processing expired leases. Expired leases
// will be reclaimed periodically according to the "reclaim-timer-wait-time"
// parameter. Reclaimed leases will be held in the database for 1800s to
// facilitate lease affinity. After this period the leases will be removed.
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// The frequency of removal is controlled by the
// "flush-reclaimed-timer-wait-time" parameter. The lease reclamation
// routine will process at most 500 leases or will last for at most
// 100ms, during a single run. If there are still some unreclaimed
// leases after 10 attempts, a warning message is issued.
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  "expired-leases-processing": {
    "reclaim-timer-wait-time": 5,
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    "hold-reclaimed-time": 1800,
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    "flush-reclaimed-timer-wait-time": 10,
    "max-reclaim-leases": 500,
    "max-reclaim-time": 100,
    "unwarned-reclaim-cycles": 10
  },

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// Addresses will be assigned with preferred and valid lifetimes
// being 3000 and 4000, respectively. Client is told to start
// renewing after 1000 seconds. If the server does not respond
// after 2000 seconds since the lease was granted, client is supposed
// to start REBIND procedure (emergency renewal that allows switching
// to a different server).
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  "preferred-lifetime": 3000,
  "valid-lifetime": 4000,
  "renew-timer": 1000,
  "rebind-timer": 2000,

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// The following list defines subnets. Each subnet consists of at
// least subnet and pool entries.
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  "subnet6": [
    {
      "pools": [ { "pool": "2001:db8:1::/80" } ],
      "subnet": "2001:db8:1::/64",
      "interface": "ethX"
    }
  ]
},

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// The following configures logging. It assumes that messages with at
// least informational level (info, warn, error and fatal) should be
// logged to stdout.
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"Logging": {
    "loggers": [
        {
            "name": "kea-dhcp6",
            "output_options": [
                {
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                    "output": "stdout"
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                }
            ],
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            "debuglevel": 0,
            "severity": "INFO"
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        }
    ]
}

}