Configuring MLPPP and MLFR Bundles on Services Interfaces

You can use the services interfaces configuration pages to do the following:

Configure the multilink services (ml-fpc/pic/port), link services (ls-fpc/pic/port), and link services intelligent queuing (lsq-fpc/pic/port) interfaces.
Configure multilink logical interfaces on the multilink services, link services, and link services intelligent queuing (IQ) interfaces. Multilink logical interfaces allow you to bundle multiple interfaces such as T1, T3, E1, E3, and serial into a single logical link as follows:
- Bundle multiple Point-to-Point Protocol (PPP) links into a single Multilink Point-to-Point Protocol (MLPPP) logical link
- Bundle multiple Frame Relay data-link connection identifiers (DLCIs) into a single Multilink Frame Relay (MLFR) logical link
In addition to providing additional bandwidth, bundling multiple links can add a level of fault tolerance to your dedicated access service. Because you can implement bundling across multiple interfaces, you can protect users against loss of access when any single interface fails.

To configure the services interfaces:

From the configuration page, as shown in Figure 1, select the services interface—for example, ls-0/0/0—you want to configure.
Enter information into the configuration page, as described in Table 13.
Click one of the following buttons:
- To apply the configuration and stay on the configuration page, click Apply.
- To apply the configuration and return to the main configuration page, click OK.
- To cancel your entries and return to the main page, click Cancel.

Table 13: Services Interface Configuration Summary

Field	Function	Your Action
Logical Interfaces
Add logical interfaces	Defines one or more logical units that you connect to this services interface. You must define at least one logical unit for the services interface.	Click Add.
Logical Interface Description	(Optional) Describes the logical interface.	Type a text description of the logical interface to more clearly identify it in monitoring displays.
IPv4 Addresses and Prefixes	Specifies one or more IPv4 addresses for the interface.	Type one or more IPv4 addresses and prefixes. For example: 10.10.10.10/24 Click Add. Click OK.
Physical Interface Description	Physical Interface Description	Type a text description of the services interface to more clearly identify it in monitoring displays.
Enable Subunit Queuing	Enables or disables subunit queuing on Frame Relay or virtual LAN (VLAN) intelligent queuing (IQ) interfaces.	To enable subunit queuing, select the check box. To disable subunit queuing, clear the check box.