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Managing Subscriptions to Bandwidth-on-Demand Services

The service provider makes bandwidth services available to enterprises. IT managers can use these services to provision bandwidth within an enterprise to meet the forwarding requirements for subscriber traffic. The service provider can make the following types of bandwidth services available:

Only one subscription to one bandwidth level is supported for an access link.

You can classify traffic by source IP address, destination IP address, source Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) port, destination TCP or UDP port, or type-of-service (ToS) byte, and assign that traffic to a service level.

NOTE: Enterprise Manager Portal supports only services that have policies configured.


When both of these services are available, you can provide subscribers with class of service (CoS)—the method of classifying traffic on a packet-by-packet basis with information in the ToS byte to provide different service levels to different traffic.

Whether bandwidth level (a basic BoD service), BoD services, or both are available depends on the configuration for the portal. See Chapter 27, Installing and Configuring Enterprise Service Portals.

Planning Subscriptions to BoD Services

When planning subscriptions, consider the following factors:

If a subscription to a bandwidth level needs to be deleted or moved, all subscriptions to BoD services for subscribers in the same container must be disabled or deleted first.

If a packet matches more than one rule for BoD services, which rule is applied is unpredictable. For example, if the destination IP address matches a rule for a Gold BoD service, but the destination port matches the source TCP port for a Silver BoD service, and the rules have no other conditions, which rule is applied is uncertain.

Plan rules for BoD services so that a packet matches all the following conditions—protocol, source IP address, destination IP address, source TCP or UDP port, destination TCP or UDP port, or ToS byte—for only one BoD service.

Creating a Subscription to BoD Services

When you create a subscription to a BoD service, you initially set a bandwidth level if available and not previously set.

Setting a Bandwidth Level

To create a subscription to a bandwidth level:

  1. In the navigation pane of Enterprise Manager Portal, click the subscriber for whom you want to provision bandwidth.
  2. Click the Bandwidth & VPNs tab.

    NOTE: If VPN features are not configured, the tab is named Bandwidth.


The Bandwidth & VPNs page appears.


Figure 34: Bandwidth & VPNs Page
  1. Using the field description below, select a bandwidth level, and click Apply.

The bandwidth level becomes available, and the fields for setting BoD services appear on the Bandwidth page.

Bandwidth Level

In the navigation pane, a subscriber subordinate to the one who has the bandwidth level subscription inherits the subscription. A subordinate subscriber cannot subscribe to another bandwidth level.

If you select default for the value, all traffic is treated the same.

Adding Subscriptions to BoD Services

To add a subscription to a BoD service:

  1. In the navigation pane of Enterprise Manager Portal, click the subscriber to assign to a BoD service.
  2. Click the Bandwidth & VPNs tab.
  3. If a bandwidth level has not been set, specify a bandwidth level.

The bandwidth level becomes available, and the fields for setting BoD services appear on the Bandwidth & VPNs page.


Figure 35: Bandwidth & VPNs Page with a Bandwidth Level Set
  1. Click Create Bandwidth Rule.

The Create Rule dialog box appears.

  1. Using the field descriptions below, configure subscriptions for BoD services.

You can configure any number of subscriptions by assigning different traffic flows, identified by rules under Affected Traffic on the Bandwidth & VPNs page (see Figure 35), to different BoD services.

  1. Click Create.

The subscription appears in the Bandwidth & VPNs page.

Rule Name

IP Protocols

ToS Byte

Use an x to indicate a bit to be ignored.

Specify the ToS byte in this field if you want to enable BoD for a specific type of service. If you want to enable BoD for all types of service, leave this field empty.

Source IP Addresses

The order in which you list prefixes, identified by the IP address-netmask pair, is not significant. They are all evaluated to determine whether a match occurs. If prefixes overlap, longest-match rules are used to determine whether a match occurs. For an address to be considered a match, it must match one of the rules in the list.

For information about how JUNOS routing platforms evaluate prefixes, see the JUNOS Policy Framework Configuration Guide.

172.16.0.0/10, not 172.16.2.0/16

Source Ports

Destination IP Addresses

The order in which you list prefixes, identified by the IP address-netmask pair, is not significant. They are all evaluated to determine whether a match occurs. If prefixes overlap, longest-match rules are used to determine whether a match occurs. For an address to be considered a match, it must match one of the rules in the list.

For information about how JUNOS routing platforms evaluate prefixes, see the JUNOS Policy Framework Configuration Guide.

Destination Ports

TCP Flags

You can enter a logical expression that contains the symbols for the six TCP flags: urgent, ack, push, rst, syn, and fin. You can use the following logical operators in the list of flags:

You can use the following expression instead of the entire expression:

The interface displays text synonyms for expressions if stored data matches the expression.

This field appears enabled only if the configuration level is set to Advanced. Although the value can be changed when the configuration level is set to Normal, we recommend that the value of this field not be changed if the field appears disabled.

Fragmentation Flags

Fragment Offset

Packet Length

ICMP Type

The following list shows the symbolic name and associated numbers for ICMP types. The ICMP types are the same as those on JUNOS routing platforms with the addition of traceroute.

This field appears enabled only if the configuration level is set to Advanced. Although the value can be changed when the configuration level is set to Normal, we recommend that the value of this field not be changed if the field appears disabled.

ICMP Code

This field appears enabled only if the configuration level is set to Advanced. Although the value can be changed when the configuration level is set to Normal, we recommend that the value of this field not be changed if the field appears disabled.

BoD Service

For more information about the interaction between the bandwidth level and BoD services, see Chapter 22, Reviewing and Configuring Policies and Services for Enterprise Manager Portal.

Destination VPN

Enabled

Modifying Rules for a Subscription to a BoD Service

To modify rules for a subscription to a BoD service:

  1. Start at the subscriber's Bandwidth page (see Figure 35).
  2. Change the values in the fields for this rule.
  3. Click Apply for the subscription.

Modifying the Bandwidth Level

To modify a bandwidth level:

  1. Start at the subscriber's Bandwidth page (see Figure 35).
  2. Disable all BoD services that this subscriber inherits from parent subscribers.
  3. Disable all BoD services defined for this subscriber's subordinate subscribers.
  4. Select a new value from the Bandwidth Level menu.
  5. Click Apply.
  6. If needed, enable BoD services that this subscriber inherits from parent subscribers.
  7. If needed, enable BoD services defined for this subscriber's subordinate subscribers.

Moving the Bandwidth Level

To move the bandwidth level to another subscriber:

  1. Delete the bandwidth level. See Deleting the Bandwidth Level.
  2. Set a bandwidth level for another subscriber. See Creating a Subscription to BoD Services.
  3. Create BoD services. See Creating a Subscription to BoD Services.

Deleting a Subscription for a BoD Service

To delete a subscription to a BoD service:

  1. Start at the subscriber's Bandwidth page (see Figure 35).
  2. Click Delete for the subscription.

Deleting the Bandwidth Level

To delete the bandwidth level:

  1. Start at the subscriber's Bandwidth page (see Figure 35).
  2. Disable all BoD services that this subscriber inherits from parent subscribers.
  3. Disable all BoD services defined for this subscriber's subordinate subscribers.
  4. Select Default from the Bandwidth Level menu.
  5. Click Apply.

Monitoring Use of Subscriptions to BoD Services

To monitor the use of a bandwidth subscription:

  1. Start at the subscriber's Bandwidth page (see Figure 35).
  2. Click Usage Data for the bandwidth level or subscription.

The Service Usage page appears.


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