HP Intelligent Management Center Licenses - Manual (Page 99)

path, MPLS TE checks whether the cost value of the path is the lowest, whether the path satisfies
the specified bandwidth and routing requirements, and so on.
3. Establishing tunnels.
The headend node establishes a tunnel to the tailend node through a signaling protocol. The
RSVP-TE signaling is commonly used to set up tunnels. The tunnels are unidirectional.
4. Forwarding packets.
The system assigns different traffic to different TE tunnels to forward the traffic over the
established tunnels.
MPLS TE manager overview
System Overview
In case of resources deficiency, MPLS TE can preempt the bandwidth resources of LSP tunnels with
lower priorities to satisfy the bandwidth requirements of higher priority users or LSPs. Besides, if
an LSP tunnel fails or congestion occurs at a node, MPLS TE will switch to a new LSP tunnel to
forward traffic through the path backup or Fast ReRoute (FRR) mechanisms. Thus, using MPLS TE,
you can eliminate network congestion simply by establishing some LSPs and bypassing congestion
nodes, and, as the number of LSPs increases, you can also use special off-line tools to analyze
services.
The MPLS TE manager is a simple, efficient, visual management tool. It helps you manage network
operations and assign network resources reasonably. For example, you can set up a tunnel
dedicated to a service to ensure that the service gets sufficient bandwidth and can operate stably.
In addition, the MPLS TE manager allows you to view the distribution of TE devices on the whole
network by displaying the network topology, create tunnels as needed on devices, and distribute
the tunnels as routes. These tunnels can be configured to service only specific traffic, so as to ensure
the stable running of the traffic.
Function Overview
The MPLS TE manager provides these functions: TE topology, resource management, advanced
RSVP TE features, MPLS TE tunnel Management, explicit path management, protection management,
and traffic access management.
•
TE Topology
This function provides a graphical view of all MPLS TE tunnel information, visually reflecting
the current network performance. You can use the information to optimize the network
performance.
•
Resource Management
Device Management
This function allows you to import and synchronize MPLS TE devices. Devices to be
imported must support MPLS TE. The devices support manual synchronization and
automatic synchronization.
◦
◦ Interface Management
This function allows you to configure interfaces of devices to implement MPLS TE.
MPLS TE manager overview 99