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authorChristian Poessinger <christian@poessinger.com>2019-12-19 18:17:43 +0100
committerChristian Poessinger <christian@poessinger.com>2019-12-19 18:17:43 +0100
commit678317d432b968d15d9d36a63eadc4509c98410a (patch)
tree0fc21ee0c8939dc2eac36b877d3fba17f6410981 /docs/services/dhcp.rst
parent6a2f577858f718833511d34f0bc431804aeb9e40 (diff)
downloadvyos-documentation-678317d432b968d15d9d36a63eadc4509c98410a.tar.gz
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style-guide: all opcmd and clicmd explanations should be indented by 3
Diffstat (limited to 'docs/services/dhcp.rst')
-rw-r--r--docs/services/dhcp.rst206
1 files changed, 107 insertions, 99 deletions
diff --git a/docs/services/dhcp.rst b/docs/services/dhcp.rst
index 1303395a..19c92aac 100644
--- a/docs/services/dhcp.rst
+++ b/docs/services/dhcp.rst
@@ -52,38 +52,37 @@ Explanation
.. 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.
+ 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 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
+ 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 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
-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.
+ 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
+ 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 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.
-
+ 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 dhcpexample subnet 192.0.2.0/24 range 0 start 192.0.2.100
-Make a range of addresses available for clients starting from .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 stop 192.0.2.199
-[...] and ending at .199.
+ [...] and ending at .199.
Failover
--------
@@ -93,22 +92,22 @@ explicitly by the following statements.
.. cfgcmd:: set service dhcp-server shared-network-name 'LAN' subnet '192.0.2.0/24' failover local-address '192.0.2.1'
-Local IP address used when communicating to the failover peer.
+ Local IP address used when communicating to the failover peer.
.. cfgcmd:: set service dhcp-server shared-network-name 'LAN' subnet '192.0.2.0/24' failover peer-address '192.0.2.2'
-Peer IP address of the second DHCP server in this failover cluster.
+ Peer IP address of the second DHCP server in this failover cluster.
.. cfgcmd:: set service dhcp-server shared-network-name 'LAN' subnet '192.0.2.0/24' failover name 'foo'
-A generic name referencing this sync service.
+ A generic name referencing this sync service.
.. note:: `name` must be identical on both sides!
.. cfgcmd:: set service dhcp-server shared-network-name 'LAN' subnet '192.0.2.0/24' failover status '{primary|secondary}'
-The primary and secondary statements determines whether the server is primary
-or secondary.
+ The primary and secondary statements determines whether the server is primary
+ or secondary.
.. note:: In order for the primary and the secondary DHCP server to keep
their lease tables in sync, they must be able to reach each other on TCP
@@ -131,12 +130,14 @@ inside the subnet definition but can be outside of the range statement.
.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 static-mapping static-mapping-01 mac-address ff:ff:ff:ff:ff:ff
-Each host is uniquely identified by its MAC address.
+ Each host is uniquely identified by its MAC address.
.. cfgcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 static-mapping static-mapping-01 ip-address 192.0.2.10
-IP address to assign to this host. It must be inside the subnet in which it is defined but can be outside the dynamic range.
-If ip-address is not specified, an IP from the dynamic pool (as specified by ``range``) is used. This is useful, for example, in combination with hostfile update.
+ IP address to assign to this host. It must be inside the subnet in which it
+ is defined but can be outside the dynamic range. If ip-address is not
+ specified, an IP from the dynamic pool (as specified by ``range``) is used.
+ This is useful, for example, in combination with hostfile update.
.. hint:: This is the equivalent of the host block in dhcpd.conf of isc-dhcpd.
@@ -145,25 +146,25 @@ DHCP Options
.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 default-router '<address>'
-Specify the default routers IPv4 address which should be used in this subnet.
-This can - of course - be a VRRP address (DHCP option 003).
+ Specify the default routers IPv4 address which should be used in this subnet.
+ This can - of course - be a VRRP address (DHCP option 003).
.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 dns-server '<address>'
-Specify the DNS nameservers used (Option 006). This option may be used mulltiple
-times to specify additional DNS nameservers.
+ Specify the DNS nameservers used (Option 006). This option may be used
+ mulltiple times to specify additional DNS nameservers.
.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 domain-name '<domain-name>'
-The domain-name parameter should be the domain name that will be appended to
-the client's hostname to form a fully-qualified domain-name (FQDN) (DHCP
-Option 015).
+ The domain-name parameter should be the domain name that will be appended to
+ the client's hostname to form a fully-qualified domain-name (FQDN) (DHCP
+ Option 015).
.. cfgcmd:: set service dhcp-server shared-network-name '<name>' subnet 192.0.2.0/24 domain-search '<domain-name>'
-The domain-name parameter should be the domain name used when completing DNS
-request where no full FQDN is passed. This option can be given multiple times
-if you need multiple search domains (DHCP Option 119).
+ The domain-name parameter should be the domain name used when completing DNS
+ request where no full FQDN is passed. This option can be given multiple times
+ if you need multiple search domains (DHCP Option 119).
.. list-table::
:header-rows: 1
@@ -319,18 +320,18 @@ Example
.. opcmd:: set service dhcp-server shared-network-name dhcpexample subnet 192.0.2.0/24 static-mapping example static-mapping-parameters "option domain-name-servers 192.0.2.11, 192.0.2.12;"
-Override the static-mapping's dns-server with a custom one that will be sent only to this host.
+ Override the static-mapping's dns-server with a custom one that will be sent only to this host.
Operation Mode
--------------
.. opcmd:: restart dhcp server
-Restart the DHCP server
+ Restart the DHCP server
.. opcmd:: show dhcp server statistics
-Show the DHCP server statistics:
+ Show the DHCP server statistics:
.. code-block:: none
@@ -341,11 +342,11 @@ Show the DHCP server statistics:
.. opcmd:: show dhcp server statistics pool <pool>
-Show the DHCP server statistics for the specified pool.
+ Show the DHCP server statistics for the specified pool.
.. opcmd:: show dhcp server leases
-Show statuses of all active leases:
+ Show statuses of all active leases:
.. code-block:: none
@@ -355,19 +356,22 @@ Show statuses of all active leases:
192.0.2.104 aa:bb:cc:dd:ee:ff active 2019/12/05 14:24:23 2019/12/06 02:24:23 6:05:35 dhcpexample test1
192.0.2.115 ab:ac:ad:ae:af:bf active 2019/12/05 18:02:37 2019/12/06 06:02:37 9:43:49 dhcpexample test2
-.. hint:: Static mappings aren't shown. To show all states, use ``show dhcp server leases state all``.
+.. hint:: Static mappings aren't shown. To show all states, use
+ ``show dhcp server leases state all``.
.. opcmd:: show dhcp server leases pool <pool>
-Show only leases in the specified pool.
+ Show only leases in the specified pool.
.. opcmd:: show dhcp server leases sort <key>
-Sort the output by the specified key. Possible keys: ip, hardware_address, state, start, end, remaining, pool, hostname (default = ip)
+ Sort the output by the specified key. Possible keys: ip, hardware_address,
+ state, start, end, remaining, pool, hostname (default = ip)
.. opcmd:: show dhcp server leases state <state>
-Show only leases with the specified state. Possible states: all, active, free, expired, released, abandoned, reset, backup (default = active)
+ Show only leases with the specified state. Possible states: all, active,
+ free, expired, released, abandoned, reset, backup (default = active)
DHCPv6 Server
=============
@@ -380,47 +384,46 @@ Configuration Options
.. cfgcmd:: set service dhcpv6-server preference <preference value>
-Clients receiving advertise messages from multiple servers choose the server
-with the highest preference value. The range for this value is ``0...255``.
-
+ Clients receiving advertise messages from multiple servers choose the server
+ with the highest preference value. The range for this value is ``0...255``.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' lease-time {default | maximum | minimum}
-The default lease time for DHCPv6 leases is 24 hours. This can be changed by
-supplying a ``default-time``, ``maximum-time`` and ``minimum-time``. All values
-need to be supplied in seconds.
+ The default lease time for DHCPv6 leases is 24 hours. This can be changed by
+ supplying a ``default-time``, ``maximum-time`` and ``minimum-time``. All
+ values need to be supplied in seconds.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' nis-domain '<domain-name>'
-A :abbr:`NIS (Network Information Service)` domain can be set to be used for
-DHCPv6 clients.
+ A :abbr:`NIS (Network Information Service)` domain can be set to be used for
+ DHCPv6 clients.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' nisplus-domain '<domain-name>'
-The procedure to specify a :abbr:`NIS+ (Network Information Service Plus)`
-domain is similar to the NIS domain one:
+ The procedure to specify a :abbr:`NIS+ (Network Information Service Plus)`
+ domain is similar to the NIS domain one:
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' nis-server '<address>'
-Specify a NIS server address for DHCPv6 clients.
+ Specify a NIS server address for DHCPv6 clients.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' nisplus-server '<address>'
-Specify a NIS+ server address for DHCPv6 clients.
+ Specify a NIS+ server address for DHCPv6 clients.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' sip-server-address '<address>'
-Specify a :abbr:`SIP (Session Initiation Protocol)` server by IPv6 address for
-all DHCPv6 clients.
+ Specify a :abbr:`SIP (Session Initiation Protocol)` server by IPv6 address
+ for all DHCPv6 clients.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' sip-server-name '<fqdn>'
-Specify a :abbr:`SIP (Session Initiation Protocol)` server by FQDN for all
-DHCPv6 clients.
+ Specify a :abbr:`SIP (Session Initiation Protocol)` server by FQDN for all
+ DHCPv6 clients.
.. cfgcmd:: set service dhcpv6-server shared-network-name '<name>' subnet '<v6net>' sntp-server-address '<address>'
-A SNTP server address can be specified for DHCPv6 clients:
+ A SNTP server address can be specified for DHCPv6 clients.
Address pools
-------------
@@ -468,9 +471,11 @@ be created. The following example explains the process.
* IPv6 address ``2001:db8::101`` shall be statically mapped
* Host specific mapping shall be named ``client1``
-.. hint:: The identifier is the device's DUID: colon-separated hex list (as used by isc-dhcp option dhcpv6.client-id).
- If the device already has a dynamic lease from the DHCPv6 server, its DUID can be found with ``show service dhcpv6 server leases``.
- The DUID begins at the 5th octet (after the 4th colon) of IAID_DUID.
+.. hint:: The identifier is the device's DUID: colon-separated hex list (as
+ used by isc-dhcp option dhcpv6.client-id). If the device already has a
+ dynamic lease from the DHCPv6 server, its DUID can be found with ``show
+ service dhcpv6 server leases``. The DUID begins at the 5th octet (after the
+ 4th colon) of IAID_DUID.
.. code-block:: none
@@ -502,15 +507,15 @@ Operation Mode
.. opcmd:: restart dhcpv6 server
-To restart the DHCPv6 server
+ To restart the DHCPv6 server
.. opcmd:: show dhcpv6 server status
-To show the current status of the DHCPv6 server.
+ To show the current status of the DHCPv6 server.
.. opcmd:: show dhcpv6 server leases
-Show statuses of all assigned leases:
+ Show statuses of all assigned leases:
.. code-block:: none
@@ -520,19 +525,22 @@ Show statuses of all assigned leases:
2001:db8::101 active 2019/12/05 19:40:10 2019/12/06 07:40:10 11:45:21 non-temporary NET1 98:76:54:32:00:01:00:01:12:34:56:78:aa:bb:cc:dd:ee:ff
2001:db8::102 active 2019/12/05 14:01:23 2019/12/06 02:01:23 6:06:34 non-temporary NET1 87:65:43:21:00:01:00:01:11:22:33:44:fa:fb:fc:fd:fe:ff
-.. hint:: Static mappings aren't shown. To show all states, use ``show dhcp server leases state all``.
+.. hint:: Static mappings aren't shown. To show all states, use ``show dhcp
+ server leases state all``.
.. opcmd:: show dhcpv6 server leases pool <pool>
-Show only leases in the specified pool.
+ Show only leases in the specified pool.
.. opcmd:: show dhcpv6 server leases sort <key>
-Sort the output by the specified key. Possible keys: expires, iaid_duid, ip, last_comm, pool, remaining, state, type (default = ip)
+ Sort the output by the specified key. Possible keys: expires, iaid_duid, ip,
+ last_comm, pool, remaining, state, type (default = ip)
.. opcmd:: show dhcpv6 server leases state <state>
-Show only leases with the specified state. Possible states: abandoned, active, all, backup, expired, free, released, reset (default = active)
+ Show only leases with the specified state. Possible states: abandoned,
+ active, all, backup, expired, free, released, reset (default = active)
DHCP Relay
==========
@@ -550,16 +558,16 @@ Configuration
.. cfgcmd:: set service dhcp-relay interface '<interface>'
-Enable the DHCP relay service on the given interface.
+ Enable the DHCP relay service on the given interface.
.. cfgcmd:: set service dhcp-relay server 10.0.1.4
-Configure IP address of the DHCP server
+ Configure IP address of the DHCP server
.. cfgcmd:: set service dhcp-relay relay-options relay-agents-packets discard
-The router should discard DHCP packages already containing relay agent
-information to ensure that only requests from DHCP clients are forwarded.
+ The router should discard DHCP packages already containing relay agent
+ information to ensure that only requests from DHCP clients are forwarded.
Example
-------
@@ -592,38 +600,38 @@ Options
.. cfgcmd:: set service dhcp-relay relay-options hop-count 'count'
-Set the maximum hop count before packets are discarded. Range 0...255,
-default 10.
+ Set the maximum hop count before packets are discarded. Range 0...255,
+ default 10.
.. cfgcmd:: set service dhcp-relay relay-options max-size 'size'
-Set maximum size of DHCP packets including relay agent information. If a
-DHCP packet size surpasses this value it will be forwarded without appending
-relay agent information. Range 64...1400, default 576.
+ Set maximum size of DHCP packets including relay agent information. If a
+ DHCP packet size surpasses this value it will be forwarded without appending
+ relay agent information. Range 64...1400, default 576.
.. cfgcmd:: set service dhcp-relay relay-options relay-agents-packet 'policy'
-Four policies for reforwarding DHCP packets exist:
+ Four policies for reforwarding DHCP packets exist:
-* **append:** The relay agent is allowed to append its own relay information
- to a received DHCP packet, disregarding relay information already present in
- the packet.
+ * **append:** The relay agent is allowed to append its own relay information
+ to a received DHCP packet, disregarding relay information already present in
+ the packet.
-* **discard:** Received packets which already contain relay information will
- be discarded.
+ * **discard:** Received packets which already contain relay information will
+ be discarded.
-* **forward:** All packets are forwarded, relay information already present
- will be ignored.
+ * **forward:** All packets are forwarded, relay information already present
+ will be ignored.
-* **replace:** Relay information already present in a packet is stripped and
- replaced with the router's own relay information set.
+ * **replace:** Relay information already present in a packet is stripped and
+ replaced with the router's own relay information set.
Operation
---------
.. opcmd:: restart dhcp relay-agent
-Restart DHCP relay service
+ Restart DHCP relay service
DHCPv6 relay
============
@@ -633,12 +641,12 @@ Configuration
.. cfgcmd:: set service dhcpv6-relay listen-interface eth1
-Set eth1 to be the listening interface for the DHCPv6 relay:
+ Set eth1 to be the listening interface for the DHCPv6 relay:
.. cfgcmd:: set service dhcpv6-relay upstream-interface eth2 address 2001:db8::4
-Set eth2 to be the upstream interface and specify the IPv6 address of
-the DHCPv6 server:
+ Set eth2 to be the upstream interface and specify the IPv6 address of
+ the DHCPv6 server:
Example
^^^^^^^
@@ -670,20 +678,20 @@ Options
.. cfgcmd:: set service dhcpv6-relay max-hop-count 'count'
-Set maximum hop count before packets are discarded, default: 10
+ Set maximum hop count before packets are discarded, default: 10
.. cfgcmd:: set service dhcpv6-relay use-interface-id-option
-If this is set the relay agent will insert the interface ID. This option is
-set automatically if more than one listening interfaces are in use.
+ If this is set the relay agent will insert the interface ID. This option is
+ set automatically if more than one listening interfaces are in use.
Operation
---------
.. opcmd:: show dhcpv6 relay-agent status
-Show the current status of the DHCPv6 relay agent:
+ Show the current status of the DHCPv6 relay agent:
.. opcmd:: restart dhcpv6 relay-agent
-Restart DHCPv6 relay agent immediately.
+ Restart DHCPv6 relay agent immediately.