Memory And Performance Impact Of Mlpoe At Pta; Mlp-Based Link Fragmentation And Interleaving; Configuring Mlp Bundles And Member Links - Cisco 10000-2P2-2DC Software Configuration Manual

Chapter 22 Configuring Multilink Point-to-Point Protocol Connections

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.
capabilities for LFI over Ethernet (LFIoE) bundles.
Bundle Type Total
LFIoE
The MLPoE at PTA feature does not impact to the PXF memory resources.
The number of MLP bundles that can be brought up with the MLPoE at PTA feature depends upon the
Note
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 non-
real-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.
In PRE1, Cisco 10000 series routers support fragmentation only on single link bundles when configured
Note
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
and interleaving) on specific interface types.
OL-2226-23
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.
Table 22-7
Table 22-7
Members
Bundles per Bundle
supported
10240 1
shows the components you must define when configuring MLP (without link fragmentation
shows the MLP interface descriptor block (IDB) and VCCI
Cisco 10000 Series Routers MLP IDB and VCCI Capabilities
SWIDB/HW Total of
IDB used SW/HW
per bundle IDBs
maximum
used
2 20480
Cisco 10000 Series Router Software Configuration Guide
MLP-Based Link Fragmentation and Interleaving
VCCIs used
per Bundle
2
Total VCCIs
maximum
used
20480
22-27