217
Restrictions and guidelines: DHCPv6 snooping
configuration
DHCPv6 snooping works between the DHCPv6 client and server, or between the DHCPv6 client and
DHCPv6 relay agent.
DHCPv6 snooping does not work between the DHCPv6 server and DHCPv6 relay agent.
DHCPv6 snooping tasks at a glance
To configure DHCPv6 snooping, perform the following tasks:
1. Configuring basic DHCPv6 snooping
2. (Optional.) Configuring DHCP snooping support for Option 18
3. (Optional.) Configuring DHCP snooping support for Option 37
4. (Optional.) Configuring DHCPv6 snooping entry auto backup
5. (Optional.) Setting the maximum number of DHCPv6 snooping entries
6. (Optional.) Configuring DHCPv6 packet rate limit
7. (Optional.) Enabling DHCPv6-REQUEST check
8. (Optional.) Configuring a DHCPv6 packet blocking port
9. (Optional.) Enabling DHCPv6 snooping logging
Configuring basic DHCPv6 snooping
Restrictions and guidelines
• To make sure DHCPv6 clients can obtain valid IPv6 addresses, specify the ports connected to
authorized DHCPv6 servers as trusted ports. The trusted ports and the ports connected to
DHCPv6 clients must be in the same VLAN.
• If you configure DHCPv6 snooping settings on a Layer 2 Ethernet interface that is a member
port of a Layer 2 aggregate interface, the settings do not take effect unless the interface is
removed from the aggregation group.
Procedure
1. Enter system view.
system-view
2. Enable DHCPv6 snooping.
ipv6 dhcp snooping enable
By default, DHCPv6 snooping is disabled.
3. Enter interface view.
interface interface-type interface-number
This interface must connect to the DHCPv6 server.
4. Specify the port as a trusted port.
ipv6 dhcp snooping trust
By default, all ports are untrusted ports after DHCPv6 snooping is enabled.
5. (Optional.) Enable recording of client information in DHCPv6 snooping entries.
a. Return to system view.
To Next Page
Loading...
Need help?
General