Licensing Requirements and Limitations for IPv6

Involved Network Elements

Other network elements are not required.

Licensing Requirements

The IPv6 function is controlled by a license. By default, this function is disabled on a new device. To use the IPv6 function, apply for and purchase the license from the device supplier.

For details about how to apply for a license, see Obtaining Licenses in the S7700 and S9700 Series Switches License Usage Guide.

Feature Support in V200R019C10

All models of S7700 series switches support IPv6.

For details about software mappings, visit Info-Finder and search for the desired product model.

Feature Limitations

• IPv6 addresses can be assigned to the management Ethernet port in V200R019C00 and later versions.

• In V200R011C10 or a later version, the VLANIF interface of a super-VLAN on a switch supports the IPv6 function.

• The duplicate address detection (DAD) function is supportedon a switch in V200R001 or a later version.

• The switch can set the CPCAR values for the packets of each protocol. The CPCAR values of some protocol packets need to be adjusted based on the actual service scale and user network.

• If the default CPCAR value of ND packets cannot meet the packet exchange requirements when too many IPv6 user hosts are connected to the switch, a large number of ND packets may be lost and the switch fails to learn ND neighbor entries. Therefore, the CPCAR value must be adjusted. To prevent the CPU from running with a high load, the CPCAR value needs to be increased to a proper value.

• If the CPCAR values are adjusted improperly, network services are affected. To adjust the CPCAR values of ND packets, contact technical support personnel.

• In V200R013C02 and later versions, after 1 to 1 VLAN mapping is configured, the VLANIF interface corresponding to the mapped VLAN supports dynamic ND entry learning.
• A device can only forward ICMPv6 packets with the Option field at Layer 3. Other IPv6 packets with the Option field will be discarded.