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Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 22 Configuring Multilink Point-to-Point Protocol Connections
MLP Overhead
MLP Overhead
MLP encapsulation adds six extra bytes (4 header, 2 checksum) to each outbound packet. These overhead
bytes reduce the effective bandwidth on the connection; therefore, the throughput for an MLP bundle is
slightly less than an equivalent bandwidth connection that is not using MLP. If the average packet size
is large, the extra MLP overhead is not readily apparent; however, if the average packet size is small, the
extra overhead becomes more noticeable.
Using MLP fragmentation adds additional overhead to a packet. Each fragment contains six bytes of
MLP header plus a link encapsulation header.
Configuration Commands for MLP
This section describes the following commands used to configure MLP and MLP-based link
fragmentation and interleaving:
•
interface multilink Command, page 22-9
•
ppp multilink Command, page 22-10
•
ppp multilink fragment-delay Command, page 22-10
•
ppp multilink interleave Command, page 22-11
•
ppp multilink fragment disable Command, page 22-12
•
ppp multilink group Command, page 22-12
For more information about MLP-based link fragmentation and interleaving, see the
Cisco 10000 Series
Router Quality of Service Configuration Guide
.
interface multilink Command
To create and configure a multilink bundle, use the
interface multilink
command in global configuration
mode. To remove a multilink bundle, use the
no
form of the command.
interface multilink
multilink-bundle-number
no
interface multilink
multilink-bundle-number
Syntax Description
Command History
Defaults
No multilink interfaces are configured.
multilink-bundle-number
A nonzero number that identifies the multilink bundle.
Cisco IOS Release
Description
12.0
The
interface multilink
command was introduced on the Cisco 10000
series router.
12.2(16)BX
This command was introduced on the PRE2.
12.2(28)SB
This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(31)SB2
This command was introduced on the PRE3. Valid multilink interface
values changed. See the Usage Guidelines or
Table 22-3 on page 22-8
.
