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mc-ae

Syntax

mc-ae {chassis-id chassis-id;events {iccp-peer-down;force-icl-down;prefer-status-control-active;}init-delay-time seconds;mc-ae-id mc-ae-id;mode (active-active | active-standby);redundancy-group group-id;status-control (active | standby);switchover-mode (non-revertive |revertive);}

Hierarchy Level

[edit interfaces aeX aggregated-ether-options],[edit logical-systems logical-system-name interfaces aeX aggregated-ether-options]

Release Information

Statement introduced in Junos OS Release 9.6 for MX Series routers.

events statement introduced in Junos OS Release 11.4R4 for MX Series routers.

Statement introduced in Junos OS Release 12.3R2 for EX Series switches.

prefer-status-control-active statement introduced in Junos OS Release 13.2R1 for EX Series switches.

init-delay-time seconds statement introduced in Junos OS Release 13.2R3 for EX Series switches.

Statement introduced in Junos OS Release 12.2 for the QFX Series. Only the chassis-id, mc-ae-id, mode active-active, and status-control (active | standby) options are supported on QFX Series devices.

Description

Enable multichassis link aggregation groups (MC-LAGs), which enables one device to form a logical LAG interface with two or more other devices.

Options

chassis-id chassis-id
—

Specify the chassis ID for Link Aggregation Control Protocol (LACP) to calculate the port number of MC-LAG physical member links.

Values: 0 or 1

events
—

Specify an action if a specific MC-LAG event occurs.

iccp-peer-down
—

Specify an action if the ICCP peer of this node goes down.

force-icl-down
—

If the node’s ICCP peer goes down, bring down the interchassis-link logical interface.

prefer-status-control-active
—

Specify that the node configured as status-control active become the active node if the peer of this node goes down.

Note: The prefer-status-control-active statement can be configured with the status-control standby statement to prevent the LACP MC-LAG system ID from reverting to the default LACP system ID on ICCP failure. Use this statement only if you can ensure that ICCP will not go down unless the router or switch is down. You must also configure the hold-time down value (at the [edit interfaces interface-name] hierarchy level) for the interchassis link with the status-control standby configuration to be higher than the ICCP BFD timeout. This configuration prevents data traffic loss by ensuring that when the router or switch with the status-control active configuration goes down, the router or switch with the status-control standby statement does not go into standby mode.

To make the prefer-status-control-active statement work with the status-control standby statement when an interchassis-link logical interface is configured on a aggregate Ethernet interface, you must either configure the lacp periodic interval statement at the [edit interface interface-name aggregated-ether-options] hierarchy level as slow or configure the detection-time threshold statement at the [edit protocols iccp peer liveness-detection] hierarchy level as less than 3 seconds.

init-delay-time seconds
—

To minimize traffic loss, specify the number of seconds in which to delay bringing the multichassis aggregated Ethernet interface back to the up state when you reboot an MC-LAG peer.

mc-ae-id mc-ae-id
—

Specify the identification number of the MC-LAG device. The two MC-LAG network devices that manage a given MC-LAG must have the same identification number.

Range: 1 through 65,535

mode (active-active | active-standby)
—

Specify whether the MC-LAG is in active-active or active-standby mode.

Note: You can configure IPv4 (inet) and IPv6 (inet6) addresses on mc-ae interfaces when the active-standby mode is configured.

redundancy-group group-id
—

Specify the redundancy group identification number. The Inter-Chassis Control Protocol (ICCP) uses the redundancy group ID to associate multiple chassis that perform similar redundancy functions.

Range: 1 through 4,294,967,294

revert-time
—

Wait interval (in minutes) before the switchover to the preferred node is performed when the switchover-mode is configured as revertive.

Range: 1 through 10

status-control (active | standby)
—

Specify whether the chassis becomes active or remains in standby mode when an interchassis link failure occurs.

switchover-mode (non-revertive | revertive)
—

Specify whether Junos OS should trigger a link switchover to the preferred node when the active node is available.

Note: For revertive mode to automatically switch over to the preferred node, the status-control statement needs to be configured as active.

Required Privilege Level

interface—To view this statement in the configuration.

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

 

Related Documentation

 

Published: 2015-02-23

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