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Link Bandwidth Reservation

Individual link bandwidth reservation schemes can be assigned to a link by applying a CoS policy to that link. NorthStar Planner allows the user to define a robust collection of CoS policies, which can be specific to a router or generic to all routers.

Figure 1: Defining Scheduler Maps or CoS Policies Graphical user interface for configuring Class of Service policies in a network management system, showing CoS policies table and policy details.

Once CoS policies, have been defined, they can be assigned to specific links. Since each link contains two interfaces, one at each end, a policy can be assigned to each end of the link.

Figure 2: Assigning a Scheduler Map or CoS Policy to a Link Network configuration interface for modifying a link between Node A and Node Z. Tabs include Properties, Location, Multicast, MPLSTE, Protocols, Attributes, CoS Policy, PBR, User Parameters. Node A policy dropdown shows options like unspecified and NMSP4 default. Node Z policy is NMSP1 simple-map. Buttons for OK, Cancel, Help are at the bottom.

Once a policy has been assigned to a link, the capacity on the link will be updated to reflect the policy. The way in which the bandwidth is displayed in the link capacity window can be controlled by Bandwidth Model option described earlier. In the screenshot below, the Bandwidth Model being used is MAM.

Figure 3: Link Capacity Reflecting the Assigned Scheduler Map or CoS Policy Network management software interface showing network links with attributes: Name, NodeA.ID, IP_A, NodeZ.ID, IP_Z, Area, Type, Media. Detailed metrics for a selected link include bandwidth and RSVP tunnel bandwidth. Navigation menu on the left includes Summary, Nodes, Links, Interfaces, Demands, Tunnels. Options to filter or highlight links are available.

Partition

This corresponds to the class type associated with the policy assigned to the interface.

RSVPBW

This is the amount of bandwidth reserved for the corresponding partition, as defined by the assigned policy.

TunnelBW

This is the amount of tunnel bandwidth currently passing through the interface.

AvRSVP

This is the amount of available bandwidth remaining for the corresponding partition.