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Home Documentation Junos OS Junos CLI Reference CLI Reference C

Junos CLI Reference

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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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control-word

date_range 26-Jul-24
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Syntax

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control-word;

Hierarchy Level

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edit logical-systems logical-system-name routing-instances routing-instance-name protocols evpn],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols vpls],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols vpls mesh-group mesh-group-name neighbor address static],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols vpls neighbor address static],
[edit routing-instances routing-instance-name protocols evpn],
[edit routing-instances routing-instance-name protocols vpls],
[edit routing-instances routing-instance-name protocols vpls mesh-group mesh-group-name neighbor address static],
[edit routing-instances routing-instance-name protocols vpls neighbor address static]

Description

Set control-word to request that other routers insert a control word between the label stack and the MPLS payload.

Enabling control-word prevents provider edge routers from incorrectly identifying a VPLS payload as an IPv4 or IPv6 payload. This prevents out-of-order packet delivery in a VPLS network that is configured to load-balance VPLS traffic across multiple paths.

The control-word status for static pseudowires in an VPLS instance depends on the VPLS instance and mesh-group configurations. Table 1 displays the control-word status based on the control-word configuration in the VPLS instance and static pseudowire mesh-group.

Table 1: Status of control-word for static pseudowire with respect to control-word at VPLS instance

Control-word Configuration at VPLS Instance

Control-word Configuration at Static Pseudowire in Mesh-group

Control-word Enabled or Disabled for Static Pseudowire

default

default

disabled

default

control-word

enabled

default

no-control-word

disabled

control-word

default

enabled

control-word

control-word

enabled

control-word

no-control-word

disabled

no-control-word

default

disabled

no-control-word

control-word

enabled

no-control-word

no-control-word

disabled

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 14.1.

Statement introduced for static pseudowires in mesh-group and in VPLS instance in Junos OS Release 20.3R1.

Statement introduced for the MPC-10E line card on the MX series router in Junos OS Release 21.3R1 and Junos OS Release 21.2R3-S3.

Related Documentation

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