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Diffstat (limited to 'docs/services/dhcp.rst')
| -rw-r--r-- | docs/services/dhcp.rst | 45 |
1 files changed, 17 insertions, 28 deletions
diff --git a/docs/services/dhcp.rst b/docs/services/dhcp.rst index 184bd1c2..1a1a9ec9 100644 --- a/docs/services/dhcp.rst +++ b/docs/services/dhcp.rst @@ -19,33 +19,23 @@ Static mappings can be set to assign "static" addresses to clients based on thei Basic Example ------------- -We are offering address space in the 192.0.2.0/24 network, which is -physically connected on eth1, and pppoe0 is our connection to the internet. -We are using the network name ``<name>``. - -Prerequisites: - -* Configuring PPPoE interface is assumed to be done already, and appears - on `pppoe0` -* Interface ``eth1`` is configured to be connected to our DHCP subnet - 192.0.2.0/24 by assigning e.g. address 192.0.2.1/24. - -Multiple DHCP ranges can be defined and may contain holes. +In this example, we are offering address space in the 192.0.2.0/24 network. +We are using the network name `dhcpexample`. .. code-block:: none - set service dhcp-server shared-network-name '<name>' authoritative - set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 default-router 192.0.2.1 - set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 dns-server 192.0.2.1 - set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 lease 86400 - set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 range 0 start 192.0.2.100 - set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 range 0 stop 192.0.2.199 + set service dhcp-server shared-network-name dhcpexample authoritative + set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 default-router 192.0.2.1 + set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 dns-server 192.0.2.1 + set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 lease 86400 + set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 range 0 start 192.0.2.100 + set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 range 0 stop 192.0.2.199 The generated config will look like: .. code-block:: none - vyos@vyos# show service dhcp-server shared-network-name '<name>' + vyos@vyos# show service dhcp-server shared-network-name dhcpexample authoritative subnet 192.0.2.0/24 { default-router 192.0.2.1 @@ -57,23 +47,22 @@ The generated config will look like: } } - Explanation ^^^^^^^^^^^ -.. cfgcmd:: set service dhcp-server shared-network-name '<name>' authoritative +.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample authoritative This says that this device is the only DHCP server for this network. If other devices are trying to offer DHCP leases, this machine will send 'DHCPNAK' to any device trying to request an IP address that is not valid for this network. -.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 default-router 192.0.2.1 +.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 default-router 192.0.2.1 This is a configuration parameter for the subnet, saying that as part of the response, tell the client that I am the default router for this network -.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 dns-server 192.0.2.1 +.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 dns-server 192.0.2.1 This is a configuration parameter for the subnet, saying that as part of the response, tell the client that I am the DNS server for this network. If you @@ -81,20 +70,20 @@ do not want to run a DNS server, you could also provide one of the public DNS servers, such as google's. You can add multiple entries by repeating the line. -.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 lease 86400 +.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 lease 86400 Assign the IP address to this machine for 24 hours. It is unlikely you'd need to shorten this period, unless you are running a network with lots of devices appearing and disappearing. -.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 range 0 start 192.0.2.100 -Make a range of addresses available for clients starting from .100 [...] +.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 range 0 start 192.0.2.100 -.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 range 0 stop 192.0.2.199 +Make a range of addresses available for clients starting from .100 [...] -[...] and ending at .199 +.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 range 0 stop 192.0.2.199 +[...] and ending at .199. Failover -------- |