Svlan - Zte ZXR10 5900E Product Description

ZXR10 5900E Product Description
3.1.3

SVLAN

SVLAN is also called flexible QinQ. It's the development and enhancement of QinQ.
Original QinQ can only implement port-based outer layer label addition. It's not flexible in
application. SVLAN can tag packets with different S-Tag label selectively based on port
and C-Tag. To keep client packet COS, it can duplicate 802.1p field in inner layer label to
outer layer label to keep user QoS continuity.
Compared with QinQ, SVLAN has enhanced function of network user location, which
enables QinQ to better support PUPV (one VLAN per user) and PSPV (one VLAN per
service). It is easy for carrier's operation and maintenance management. The most
typical application is Triple Play service in broadband to the home.
VLAN can perfectly solve the problem of user location separation and service
differentiation in broadband network. It can implement operation and maintenance
management for one VLAN per user, which brings great convenience to network
management and maintenance. ZTE is always an advocator of this technology and takes
the leading position in the industry.
ZXR10 59E series switch supports SVLAN with the following applications and functions:
Being able to distinguish different service VLAN at one port and tag different outer layer
label based on different service requirements.
Being able to implement coexistence of VLAN transparent transmission and QinQ
service at port; being able to keep user label unchanged without adding new label to user
label when some VLAN packets are going through switch.
Being able to duplicate 802.1p field in user label to outer layer label to guarantee that
user's service level is kept unchanged in QinQ network so as to keep the consistency of
QoS of user service.
IEEE802.1ad specifies that S-Tag Ethernet type is 0x88A8 and C-Tag Ethernet type is
0x8100. ZTE switch supports C-Tag and S-Tag Ethernet type at any designated port.
SVALN has two major applications in the network:
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