Zte ZXR10 5900E Product Description page 20

ZXR10 5900E Product Description
VLAN are isolated, and user can communicate with its default gateway only.It tightly
ensures network security.
3.1.2.5 VLAN Translation
VLAN translation is also an expansion of the VLAN function. It allows overlapping VLAN
IDs of different Ethernet switches accessing from the edge, and via VLAN translation
service, these overlapping VLAN IDs will be changed to different VLAN IDs and sent via
uplink port. So that users can be isolated in L2 core switch, which simplifies the
configuration of edge access switch.
3.1.2.6 Super VLAN
The traditional ISP network allocates each user an IP subnet. There are three IP
addresses used as subnet network number, broadcasting address and default gateway
respectively when every subnet is allocated. If there are lots of IP address remained in
some users' subnet, they can't be used by other users either. This method may waste a
great number of IP addresses.
SuperVLAN solves this issue perfectly by aggregating multiple VLANs (normally called
sub-VLAN) to one SuperVLAN. These VLANs use the same IP subnet and default
network gateway.
Via SuperVLAN technology, ISP only needs to allocate one IP subnet to SuperVLAN,
and create one sub-VLAN to each user. All sub-VLANs can allocate IP addresses in the
subnet of SuperVLAN flexibly. They use the default gateway of SuperVLAN. Each VLAN
is an independent broadcasting domain, making sure the isolation of different users.
Different VLAN use SuperVLAN to route and communicate with each other.
3.1.2.7 QinQ
QinQ, also known as VLAN stacking, is a vivid name for the tunnel protocol based on
802.1Q encapsulation. Besides original VLAN label (Inner Label), QinQ technology adds
another VLAN label (Outer Label) which can cover the inner label.
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