200
The default DSCP value is 56.
Specifying a padding mode for the Interface-ID
option
About specifying a padding mode for the Interface-ID option
This feature enables the relay agent to fill the Interface-ID option in the specified mode. When
receiving a DHCPv6 packet from a client, the relay agent fills the Interface-ID option in the mode and
then forwards the packet to the DHCPv6 server.
Procedure
1. Enter system view.
system-view
2. Enter interface view.
interface interface-type interface-number
3. Specify a padding mode for the Interface-ID option.
ipv6 dhcp relay interface-id { bas | interface }
By default, the relay agent fills the Interface-ID option with the interface index of the interface.
Enabling the DHCPv6 relay agent to advertise
IPv6 prefixes
About enabling the DHCPv6 relay agent to advertise IPv6 prefixes
A DHCPv6 client can obtain an IPv6 prefix through DHCPv6 and use this IPv6 prefix to assign IPv6
address to clients in a downstream network. If the IPv6 prefix is in a different subnet than the IPv6
address of the DHCPv6 client's upstream interface, the clients in the downstream network cannot
access the external network. You can enable the DHCPv6 relay agent that is on the same link as the
DHCPv6 client to advertise the IPv6 prefix.
Procedure
1. Enter system view.
system-view
2. Enable the DHCPv6 relay agent to advertise IPv6 prefixes.
ipv6 dhcp advertise pd-route
By default, the DHCPv6 relay agent does not advertise IPv6 prefixes.
Before using this command, make sure the DHCPv6 relay agent is enabled to record DHCPv6
relay entries.
Configuring DHCPv6 relay security features
Enabling the DHCPv6 relay agent to record relay entries
About enabling the DHCPv6 relay agent to record relay entries
This feature enables the DHCPv6 relay agent to automatically record DHCPv6 relay entries after
DHCPv6 clients obtain IPv6 addresses or prefixes through DHCPv6. A DHCPv6 relay entry contains
the binding between a client's hardware address and IPv6 address or prefix.
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