H3C Technologies H3C Intelligent Management Center - Manual (Page 271)

link invalid If association lost or RT value change on a VPN link results in the link not
belonging to the original VPN, MPLS VPN Management considers it invalid.
LSP Label Switched Path. An LSP is the path along which packets of a FEC travel
through an MPLS network.
LSR Label Switching Router. An LSR is a fundamental component on an MPLS
network. LSRs support label distribution and label swapping.
management
VPN A management VPN is a VPN with Hub-Spoke networking scheme, and it can
manage user-end CEs.
MCE Multi-VPN-Instance CE. A router that has Multiple VPN-Instances, running in
an Intranet.
MPE Middle level PE. In an HoPE architecture, the device connecting a UPE and an
SPE.
MPLS Multiprotocol Label Switching. MPLS is critical to the implementation of MPLS
traffic engineering, and supports explicit LSP routing.
MPLS TE MPLS Traffic Engineering. MPLS TE combines the MPLS and traffic engineering
technologies. By establishing LSP tunnels along specific paths, it supports
reserving resources to best utilize network resources and avoid non-even load
distribution. When network resources are insufficient, MPLS TE allows
bandwidth-hungry LSPs and critical user traffic to occupy the bandwidth for
lower priority LSP tunnels. In case an LSP tunnel fails or congestion occurs on
a network node, the path backup and Fast Reroute (FRR) features that MPLS TE
provides can reroute traffic to a backup path for forwarding.
MPLS VPN Multiprotocol Label Switching Virtual Private Network.
MPLS VPN
configuration
synchronization
The latest VRF configuration and VRF routing information on a PE are
obtained, deciding whether the VRF configuration in MPLS VPN Management
has changed.
non-managed
CE
A CE device in a VPN. It maps to an actual existing but unmanageable CE
device.
NPE Network provider edge. A device that functions as the network core PE. An
NPE resides at the edge of a VPLS network core domain and provides
transparent VPLS transport services between core networks.
OSPF Open Shortest Path First.
P Provider Router. A backbone router on a service provider network and not
directly connected with any CE. It only needs to be equipped with MPLS
capability.
PBB Provider Backbone Bridge. A set of architecture and protocols for routing over
a provider's network, allowing interconnection of multiple Provider Bridge
Networks without losing individually defined VLANs.
PE Provider edge. A device connecting one or more CEs to the service provider
network, mainly for access to VPN services. A PE maps and forwards packets
between private networks and public network tunnels. A PE can be a UPE or
NPE.
peer Two LSRs using an LDP session to exchange FEC-label bindings are peers.
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