Cisco 10000-2P2-2DC Software Guide - Page 505

Chapter 22 Configuring Multilink Point-to-Point Protocol Connections MLP-Based Link Fragmentation and Interleaving example, if MLPoA is using 2040 multi-member bundles with 10200 member-links (5 links per bundle), MLPoE can only use up to 10220 single-member bundles with 10220 member-links, because the member-link pool is exhausted. Memory and Performance Impact of MLPoE at PTA The MLPoE at PTA feature impacts the memory and VCCI resources of the router processor (RP) to scale MLPoE bundles. Table 22-7 shows the MLP interface descriptor block (IDB) and VCCI capabilities for LFI over Ethernet (LFIoE) bundles. Table 22-7 Cisco 10000 Series Routers MLP IDB and VCCI Capabilities Bundle Type Total Bundles supported LFIoE 10240 Members per Bundle 1 SWIDB/HW Total of IDB used SW/HW per bundle IDBs maximum used 2 20480 VCCIs used Total VCCIs per Bundle maximum used 2 20480 The MLPoE at PTA feature does not impact to the PXF memory resources. Note The number of MLP bundles that can be brought up with the MLPoE at PTA feature depends upon the available system resources. MLP-Based Link Fragmentation and Interleaving MLP supports link fragmentation and interleaving (LFI). The MLP fragmentation mechanism multilink encapsulates large nonreal-time packets and fragments them into a small enough size to satisfy the delay requirements of real-time traffic. Smaller real-time packets are not multilink encapsulated. Instead, the MLP interleaving mechanism provides a special transmit queue (priority queue) for these delay-sensitive packets to allow the packets to be sent earlier than other packet flows. Real-time packets remain intact and MLP interleaving mechanisms send the real-time packets between fragments of the larger nonreal-time packets. For more information about link fragmentation and interleaving, see the "Fragmenting and Interleaving Real-Time and Nonreal-Time Packets" chapter in the Cisco 10000 Series Router Quality of Service Configuration Guide. Note In PRE1, Cisco 10000 series routers support fragmentation only on single link bundles when configured for LFI, using the ppp multilink interleave command. However, for multiple link bundles, the router does not support fragmentation and interleaving. You can turn off fragmentation by using the no ppp multilink fragmentation command on the Cisco 10000 router and the peer end. Configuring MLP Bundles and Member Links Table 22-8 shows the components you must define when configuring MLP (without link fragmentation and interleaving) on specific interface types. OL-2226-23 Cisco 10000 Series Router Software Configuration Guide 22-27