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| -rw-r--r-- | docs/configuration/service/dhcp-server.rst | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/docs/configuration/service/dhcp-server.rst b/docs/configuration/service/dhcp-server.rst index e3c74c02..17f8994a 100644 --- a/docs/configuration/service/dhcp-server.rst +++ b/docs/configuration/service/dhcp-server.rst @@ -39,6 +39,21 @@ Configuration Multiple DNS servers can be defined. +.. cfgcmd:: set service dhcp-server shared-network-name <name> ping-check + + When the DHCP server is considering dynamically allocating an IP address to a + client, it first sends an ICMP Echo request (a ping) to the address being + assigned. It waits for a second, and if no ICMP Echo response has been heard, + it assigns the address. + + If a response is heard, the lease is abandoned, and the server does not + respond to the client. The lease will remain abandoned for a minimum of + abandon-lease-time seconds (defaults to 24 hours). + + If a there are no free addressses but there are abandoned IP addresses, the + DHCP server will attempt to reclaim an abandoned IP address regardless of the + value of abandon-lease-time. + Individual Client Subnet ------------------------- @@ -105,6 +120,22 @@ Individual Client Subnet request where no full FQDN is passed. This option can be given multiple times if you need multiple search domains (DHCP Option 119). +.. cfgcmd:: set service dhcp-server shared-network-name <name> subnet <subnet> + ping-check + + When the DHCP server is considering dynamically allocating an IP address to a + client, it first sends an ICMP Echo request (a ping) to the address being + assigned. It waits for a second, and if no ICMP Echo response has been heard, + it assigns the address. + + If a response is heard, the lease is abandoned, and the server does not + respond to the client. The lease will remain abandoned for a minimum of + abandon-lease-time seconds (defaults to 24 hours). + + If a there are no free addressses but there are abandoned IP addresses, the + DHCP server will attempt to reclaim an abandoned IP address regardless of the + value of abandon-lease-time. + Failover -------- |