Internet Enhanced Services
7750 SR OS Services Guide Page 757
Description This command configures prefix delegation options for delegating a long-lived prefix from a
delegating router to a requesting router, where the delegating router does not require knowledge about
the topology of the links in the network to which the prefixes will be assigned.
The no form of the command disables prefix-delegation.
prefix
Syntax [no] prefix ipv6-address/prefix-length
Context config>service>ies>if>ipv6>dhcp6-server>pfx-delegate
Description This command specifies the IPv6 prefix that will be delegated by this system.
Parameters ipv6-address/prefix-length — Specify the IPv6 address on the interface.
Values ipv6-address/prefix: ipv6-address x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x [0 — FFFF]H
d [0 — 255]D
prefix-length 1 — 128
duid
Syntax duid duid [iaid iaid]
no duid
Context config>service>ies>if>ipv6>dhcp6>pfx-delegate>prefix
Description This command configures the DHCP Unique Identifier (DUID) of the DHCP client.
Parameters duid — Specifies the ID of the requesting router. If set to a non zero value the prefix defined will only
be delegated to this router. If set to zero, the prefix will be delegated to any requesting router.
iaid iaid — Specifies the identity association identification (IAID) from the requesting router that
needs to match in order to delegate the prefix defined in this row.If set to 0 no match on the
received IAID is done.
preferred-lifetime
Syntax preferred-lifetime seconds
preferred-lifetime infinite
no preferred-lifetime
Context config>service>ies>if>ipv6>dhcp6>pfx-delegate>prefix
Description This command configures the IPv6 prefix/mask preferred life time. The preferred-lifetime value
cannot be bigger than the valid-lifetime value.
The no form of the command reverts to the default value.
Default 604800 seconds (7 days)
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