Zte ZXR10 5900E series Configuration Manual page 8

ZXR10 5900E Series Configuration Guide (VPN)
Since label switching is used, the time for address search in each hop process is
shortened. In this way, the time of data transmission time is reduced in network, and
the network speed is improved.
4. Improve flexibility and expansibility
Since MPLS uses AnyToAny connection, the network flexibility and expansibility are
improved. With respect to the flexibility, special control policy can be customized to
meet special requirements of different users to realize value-added services. The
expansibility covers the following two points:
l
More VPNs are contained by a network.
l
Easy user expansion in the same VPN.
5. Convenience
MPLS is widely used in operator networks. It bring more convenience to enterprise
users establish global VPN.
6. Improve transmission security
MPLS serves as a channel mechanism to implement transparent packet transmission.
MPLS Link State Packet (LSP) have high reliability and security, similaring to frame
relay and Asynchronous Transfer Mode (ATM) Virtual Channel Connection (VCC).
7. Enhance service integration capability
A network can support the services integrating data, audio and video.
8. MPLS QoS guarantee
The related standards and drafts drawn
(BGP)/MPLS VPN:
l
RFC 4364, BGP/MPLS IP Virtual Private Networks
l
RFC 4760, Multiprotocol Extensions for BGP-4
l
RFC 2547, BGP/MPLS VPN
l
Draft RFC 2547bis, BGP/MPLS VPN
l Request For Comments (RFC) 2283, multi-protocol extension BGP4
MPLS L3VPN Related Terms
A BGP/MPLS VPN network system covers the following network devices.
l
PE
A PE refers to a router connected to a CE in a customer site in an operator network.
The PE router supports VPN and labeling function (the labeling function can be
provided by RSVP, LDP or Constraint based Routing Label Distribution Protocol
(CRLDP)).
In a single VPN, PE routers are connected by tunnel. The tunnel can be a MPLS LSP
tunnel or a LDP tunnel.
l
Provider (P)
SJ-20150114102049-016|2015-03-10 (R1.0)
byIETF for Border Gateway Protocol
1-2
ZTE Proprietary and Confidential