Zte ZXR10 8900E series, Описание продукта

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ZXR10 8900E series Core Switch Product Description
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4. When the use leaves this channel (multicast group), IGMP fastleave will delete the
user from the multicast group to avoid illegal receiving; at the same time the system
outputs user CDR to SMS system to realize billing management.
The controllable multicast technology provided by ZXR10 8900E series switches enables
the operator to control multicast services precisely, perform overall management on the
users and realize flexible provisioning of IPTV service.
3.2.6 MCE
In traditional MPLS VPN model, VPN access is provided by PE equipment and user
isolation is performed on PE equipment. The present MPLS VPN model is a plane model,
so no matter the PE equipment is located at which layer of the network, the requirements
for its performance is the same. The routes aggregate layer by layer, even when PE
extends to the edge direction, more routes need be maintained; while typical network is
core-aggregation-access three-layer model, in which the equipment performance
degrades sequentially and the network scale expands sequentially. This brings much
difficulty for PE equipment to extend to the network edge. Besides, when VPN users are
far away from PE, they need be linked by WAN links, whose number should be at least
the same as the number of VPN users. Using routers to access users nearby and
connecting them to PE via a WAN link after aggregation can save the cost and improve
bandwidth utilization rate, but different VPN users should be distinguished on this WAN
link.
MCE (Multi-VRF CE) technology extends the capability of CE and enables it to have VRF
function. The equipment with this function is called MCE equipment. In networking,
multiple MCEs together with PE are used to form a distributed PE. MCE enable multiple
VPN users to share one CE device and at the same time isolates different users, solving
the contradiction between security and cost. User data stream is terminated at MCE,
avoiding adverse effects of broadcast stream on PE equipment. Generally speaking,
MCE is a technology to realize multiple VPN users sharing one CE device in local area
network and sharing the links between this CE device and PE device. MCE can realize
total isolation between different services in transmission, solve the security problem of
traditional local area network with low cost and largely satisfy the customers’
requirements.
Figure 3-3 Architecture of MCE