Managing the Device
R81.10.X Quantum Spark 1500, 1600, 1800, 1900, 2000 Appliances Locally Managed Administration Guide|89
To enable DS-Lite:
1. In the Configuring Internet Connectivity page, click New/Edit the IPv4 connection.
The Edit Internet Connection window opens.
2. For Connection type, select DS-Lite.
Note - Make sure the interface type is the same for both IPv4 and IPv6. For
example, if the IPv4 the interface is configured as WAN, the IPv6 interface
must also be configured as WAN.
3. The AFTR address field is displayed.
Note - This field is not mandatory when the IPv6 connection type is DHCPv6.
4. In the Linked connection field, select the IPv6 connection name.
5. In the Advanced tab:
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Set the default MTU of the DS-Lite interface to 1460 (IPv4 default = 1500)
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Set the size of the IPv6 header to 40.
6. Click Apply
IPIP
IPIP, a variation of DS-Lite, is used to tunnel IPv4 traffic over IPv6-only networks. As in DS-
Lite, the IPv4 traffic is tunneled over an existing IPv6 connection. The DS-Lite/IPIP tunnel is
created between the client (gateway) and a peer (AFTR which resides on the ISP and is
configured statically or acquired via DHCPv6).
IPIP uses the same IPv4-over-IPv6 tunnel as DS-Lite, but you can configure a static IPv4
address, which is globally routable.
The gateway first establishes an IPv6 connection to the ISP. The IPv6 address consists of:
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Prefix - Obtained using prefix delegation or RA messages (SLAAC).
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Suffix - Configured by the user
Comparison of DS-Lite and IPIP:
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Both DS-Lite and IPIP use an IPv6 internet connection to carry the IPv4 traffic.
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DS-Lite – The gateway address is non-globally-routable and automatically selected
from the subnet 192.0.0.0/32.
IPIP - The gateway address is globally-routable and you configure it manually.
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