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63 lines
2.4 KiB
Plaintext
63 lines
2.4 KiB
Plaintext
**DHCPv6 Prefix Delegation (PD)**
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VyOS 1.3 (equuleus) supports DHCPv6-PD (:rfc:`3633`). DHCPv6 Prefix Delegation
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is supported by most ISPs who provide native IPv6 for consumers on fixed
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networks.
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.. cfgcmd:: set interfaces {{ var0 }} <interface> {{ var2 }} {{ var3 }}
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{{ var5 }} {{ var6 }} dhcpv6-options pd <id> length <length>
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Some ISPs by default only delegate a /64 prefix. To request for a specific
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prefix size use this option to request for a bigger delegation for this pd
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`<id>`. This value is in the range from 32 - 64 so you could request up to a
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/32 prefix (if your ISP allows this) down to a /64 delegation.
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The default value corresponds to 64.
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To request a /56 prefix from your ISP use:
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.. code-block:: none
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set interfaces {{ var0 }} {{ var1 }} {{ var2 }} {{ var4 }} {{ var5 }} {{ var7 }} dhcpv6-options pd 0 length 56
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.. cfgcmd:: set interfaces {{ var0 }} <interface> {{ var2 }} {{ var3 }}
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{{ var5 }} {{ var6 }} dhcpv6-options pd <id> interface <delegatee>
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address <address>
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Specify the interface address used locally on the interfcae where the prefix
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has been delegated to. ID must be a decimal integer.
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It will be combined with the delegated prefix and the sla-id to form a
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complete interface address. The default is to use the EUI-64 address of the
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interface.
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.. stop_vyoslinter
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Example: Delegate a /64 prefix to interface eth8 which will use a local
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address on this router of ``<prefix>::ffff``, as the address 65534 will
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correspond to ``ffff`` in hexadecimal notation.
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.. start_vyoslinter
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.. code-block:: none
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set interfaces {{ var0 }} {{ var1 }} {{ var2 }} {{ var4 }} {{ var5 }} {{ var7 }} dhcpv6-options pd 0 interface eth8 address 65534
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.. cfgcmd:: set interfaces {{ var0 }} <interface> {{ var2 }} {{ var3 }}
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{{ var5 }} {{ var6 }} dhcpv6-options pd <id> interface <delegatee> sla-id <id>
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Specify the identifier value of the site-level aggregator (SLA) on the
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interface. ID must be a decimal number greater then 0 which fits in the
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length of SLA IDs (see below).
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Example: If ID is 1 and the client is delegated an IPv6 prefix
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2001:db8:ffff::/48, dhcp6c will combine the two values into a single IPv6
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prefix, 2001:db8:ffff:1::/64, and will configure the prefix on the specified
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interface.
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.. code-block:: none
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set interfaces {{ var0 }} {{ var1 }} {{ var2 }} {{ var4 }} {{ var5 }} {{ var7 }} dhcpv6-options pd 0 interface eth8 sla-id 1
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