Cisco 10000-2P2-2DC Software Guide - Page 496

MLP on LNS Chapter 22 Configuring Multilink Point-to-Point Protocol Connections • You cannot apply a virtual template with MLP configured to an MLP bundle. • If a virtual template attached to a member link specifies a bandwidth, the router does not clone the specified bandwidth to the MLP bundle and the member links. • If link fragmentation and interleaving (LFI) is enabled, only one link is used for interleaving. For more information, see the "Fragmenting and Interleaving Real-Time and Nonreal-Time Packets" chapter in the Cisco 10000 Series Router Quality of Service Configuration Guide. • We strongly recommend that you use only strict priority queues when configuring Multi-VC MLP over ATM-based LFI. For more information, see the "Prioritizing Services" chapter in the Cisco 10000 Series Router Quality of Service Configuration Guide. MLP on LNS Networks are migrating from the digital subscriber line (DSL) aggregation network connectivity to broadband remote access server (BRAS), with the mix of Ethernet and ATM access networks. Therefore, there is an increasing need to support MLP, and, link fragmentation and interleaving (LFI), to allow high-priority, low-latency packets to be interleaved between fragments of lower-priority, higher-latency packets. Voice over IP (VoIP) is an example of a low-latency service. In the Cisco 12.2(33)SB release, the MLP on LNS feature is introduced for asymmetric digital subscriber line (ADSL) deployments where the upstream bandwidth (BW) is low. The MLP on LNS feature can receive fragments from the customer premises equipment (CPE), ensuring that there is less latency upstream, even if a large packet gets in between the voice packets. The MLP on LNS feature bundles together a virtual private dial network (VPDN) session on a single logical connection, which forms an MLP bundle on the LNS. Before the Cisco IOS 12.2(33)SB release, Cisco 10000 series routers supported only multilink bundle termination on the PPP termination aggregation (PTA) router. In the Cisco IOS 12.2(33)SB release, Cisco 10000 series routers support MLP termination on the LNS also. Figure 22-3 shows an MLP on LNS application. Figure 22-3 MLP on LNS Application Router Remote user Analog Digital Call Internet service Call provider Cisco 10000 PRE3 L2TP or L2F tunnels A B 270324 C The MLP on LNS feature is described in the following sections: • About MLP on LNS, page 22-19 • PPP multilink links max Command, page 22-21 22-18 Cisco 10000 Series Router Software Configuration Guide OL-2226-23