H3C Technologies H3C Intelligent Management Center - Manual (Page 167)

Management Group—The management group is also called resource class/color. Resource class
attributes are administratively assigned parameters which express some notion of “class” for resources.
You can view resource class attributes as “colors” assigned to resources such that the set of resources with
the same “color” conceptually belong to the same class. You can use resource class attributes to
implement a variety of policies. When you apply them to links, the resource class attribute effectively
becomes an aspect of the “link state” parameters.
You can use the concept of resource class attributes to implement many policies with regard to both traffic
and resource oriented performance optimization. You can use resource class attributes to:
• Apply uniform policies to a set of resources that do not need to be in the same topological region.
• Specify the relative preference of sets of resources for path placement of traffic trunks.
• Explicitly restrict the placement of traffic trunks to specific subsets of resources.
• Implement generalized inclusion/exclusion policies.
• Enforce traffic locality containment policies, that is, policies that seek to contain local traffic within
specific topological regions of the network.
Additionally, resource class attributes can be used for identification purposes.
Maximum reserved bandwidth—By default, a QoS policy applied in internetwork operating system (IOS)
only reserves up to 75% of the available bandwidth of a link. The reason is to leave some headroom for
routing protocols and other critical traffic that might not otherwise be accounted for in a QoS policy.
While this is effective for low-speed links, it leaves potential for a large amount of wasted bandwidth on
high-speed links. For example, on a 10 Mbps Ethernet link, only 7.5 Mbps is available for use.
You can use maximum reserved bandwidth on an MPLS TE tunnel interface to configure the bandwidth
constraints of the tunnel interface by changing the default limit of 75% to something better suited to your
needs. The router determines whether there is enough bandwidth to establish an MPLS TE tunnel.
To configure an interface:
1. Click Service > MPLS TE Manager from the tabular navigation system on the top of the IMC main
page.
2. Click Resource Mng> Interface Mng in the left navigation tree.
3. In the Interface List section of the page, select an interface that you want to configure, and then
click the Configure button.
4. On the Device Interface Configuration page, enter information in the Management Group Info field,
Max Connect Bandwidth(kbps) field and Max Reserve Bandwidth(kbps) field. Make sure that the
maximum reserved bandwidth is less than or equal to the maximum connected bandwidth. The
valid range of the management group info is 00000000 to FFFFFFFF. The valid range for max
connect bandwidth and max reserve bandwidth is 1 to 32000000.
5. Click OK.
Querying for available bandwidth
You can view the available bandwidth information, which helps you with the interface configuration.
To query for available bandwidth:
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