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22-11
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 22 Configuring Multilink Point-to-Point Protocol Connections
Configuration Commands for MLP
Command History
Defaults If fragmentation is enabled, the fragment delay is 30 milliseconds.
Usage Guidelines The ppp multilink fragment-delay command is useful when packets are interleaved and traffic
characteristics such as delay, jitter, and load balancing must be tightly controlled.
MLP chooses a fragment size on the basis of the maximum delay allowed. If real-time traffic requires a
certain maximum boundary on delay, using the ppp multilink fragment-delay command to set that
maximum time can ensure that a real-time packet gets interleaved within the fragments of a large packet.
By default, MLP has no fragment size constraint, but the maximum number of fragments is constrained
by the number of links. If interleaving is enabled, or if a fragment delay is explicitly configured with the
ppp multilink fragment-delay command, then MLP uses a different fragmentation algorithm. In this
mode, the number of fragments is unconstrained, but the size of each fragment is limited to the
fragment-delay value, or 30 milliseconds if the fragment delay has not been configured.
The ppp multilink fragment-delay command is configured under the multilink interface. The value
assigned to the delay-max argument is scaled by the speed at which a link can convert the time value into
a byte value.
ppp multilink interleave Command
To enable interleaving of real-time packets among the fragments of larger nonreal-time packets on a
MLP bundle, use the ppp multilink interleave command in interface configuration mode. To disable
interleaving, use the no form of the command.
ppp multilink interleave
no ppp multilink interleave
Command History
Defaults Interleaving is disabled.
Usage Guidelines The ppp multilink interleave command applies to multilink interfaces, which are used to configure a
bundle.
Interleaving works only when the queuing mode on the bundle is set to fair queuing.
Cisco IOS Release Description
12.0(23)SX The ppp multilink fragment-delay 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.
Cisco IOS Release Description
12.0(23)SX The ppp multilink interleave 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.