Juniper JUNOSE 11.1.X - LINK LAYER CONFIGURATION 4-7-2010 Configuration Manual page 253

6.
redundant-port
redundant-port force-failover
Chapter 6: Configuring 802.3ad Link Aggregation and Link Redundancy
host1(config-if)#redundant-port gigabitEthernet 1/1 force-failover
(Optional) Configure the redundant link to revert back to redundant mode when
the failed link becomes active again.
host1(config-if)#redundant-port gigabitEthernet 1/1 auto-revert
Use to specify a member link in a LAG bundle as redundant.
Use the failover timeout keyword to configure the amount of time between the
current link event leading to failover or reversion and the previous link failover
or reversion. The default value is 1000 milliseconds.
Use the packet-sampling keyword to configure redundancy on a LAG to non-LAG
application where packet sampling is used for failover detection. By default,
packet sampling is disabled. Use the optional delay keyword to control the
minimum time difference to force packets on the active and redundant port to
fail over. The default value is 0 milliseconds.
Use the transmitter keyword to enable or disable the transmitter when in
redundant mode.
Disabling the transmitter enables the remote end of the redundant link to
also be in the operational Down state, which might be a requirement for
third-party equipment when supporting redundancy over LAG.
Enabling the transmitter provides for a quick LAG failover in the event one
of the non-redundant links in the LAG fail. This is particularly true when
LACP has been enabled on the LAG, because it can take several seconds for
LACP to converge on a link.
Use the auto-revert keyword to instruct the redundant link to revert back to
redundant mode when the failed link becomes active again. By default, auto-revert
is disabled.
Example 1 Specifies that the Gigabit Ethernet interface in slot 4, port 0 is a
redundant member interface
host1(config-if)#redundant-port gigabitEthernet 4/0
Example 2 Specifies that the Gigabit Ethernet interface in slot 1, port 1 is a
redundant member interface with a packet sampling delay of 500 ms
host1(config-if)#redundant-port gigabitEthernet 1/1 packet-sampling delay 500
Use the no version to disable the redundant status of the member interface or
disable the specified redundancy setting for the member.
See redundant-port.
Use to force the specified member interface to fail over when more than one
active member exists.
Example
Configuring Ethernet Link Redundancy
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