Fragment Size Calculation For Mlp Over Frame Relay-Based Lfi; Performance And Scalability For Mlp Over Frame Relay-Based Lfi - Cisco 10000 Series Configuration Manual

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Fragmenting and Interleaving Real-Time and Nonreal-Time Packets

Fragment Size Calculation for MLP Over Frame Relay-Based LFI

To calculate the minimum fragment size for MLP over Frame Relay-based LFI, do the following:

Calculate the nominal fragment size (link weight) by using the following formula:

Subtract the Frame Relay encapsulation bytes and the MLP header bytes by using the following formula:

If PPP protocol compression is on, subtract 1 byte.

For no protocol compression, subtract 2 bytes.

For MLP over Frame Relay-based LFI, the minimum fragment size is 56, calculated as follows:

(MLP Min. Weight) – (PPP Encapsulation Bytes) – (MLP Header Bytes) = Min. Fragment Size

MLP Minimum Weight is 64

PPP Encapsulation Bytes is 4.

MLP Header Bytes is 4.

The following list describes how to enhance performance and scalability for MLP over Frame

Relay-based LFI:

For more information, see the

Broadband Aggregation, Leased-Line, and MPLS Configuration

(Link Bandwidth * Fragment-Delay) / 8

Nominal Fragment Size – (Frame Relay Encap. Bytes + MLP Header Bytes + Cells Checksum)

Frame Relay Encapsulation Bytes is 4.

MLP Header Bytes is 4.

Cells Checksum is 2.

Configure the following commands and recommended values on the virtual template interface:

ppp max-configure 110

ppp max-failure 100

ppp timeout retry 5

keepalive 30

Configure the hold-queue command in interface configuration mode for all Frame Relay physical

Multilink PPP-Based Link Fragmentation and Interleaving

"Performance and Scalability"

Cisco 10000 Series Router Quality of Service Configuration Guide

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Cisco 10000 Series Router

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