Configuring Ethernet Link Redundancy - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - LINK LAYER CONFIGURATION GUIDE 2010-10-13 Configuration Manual

Configuring Ethernet Link Redundancy

redundant-port
Copyright © 2010, Juniper Networks, Inc.
fails over. If the difference is less than the delay time, the system ignores it but counts
the event. If many of these transitions occur in a time period, then the system
administratively brings the ports down. If no network traffic is received on either port,
then failover does not occur.
To configure Ethernet link redundancy:
Specify the Fast Ethernet or Gigabit Ethernet interface on which to configure a
1.
redundant link.
host1(config)#interface gigabitEthernet 1/1
For LAG to non-LAG configurations only, specify that LACP is disabled on the port.
2.
host1(config-if)#no lacp
Configure a backup interface and disable LACP on it.
3.
host1(config)#interface gigabitEthernet 1/0
host1(config-if)#no lacp
Configure a LAG interface and assign a member link to the backup interface.
4.
host1(config)#interface lag myBundle
host1(config-if)#member-interface gigabitEthernet 1/0
host1(config-if)#member-interface gigabitEthernet 1/1
Do one of the following:
5.
Configure link redundancy on the port you specified in step 1.
host1(config-if)#redundant-port gigabitEthernet 1/1
Force the port you specified in step 1 to fail over.
host1(config-if)#redundant-port gigabitEthernet 1/1 force-failover
(Optional) Configure the redundant link to revert back to redundant mode when the
6.
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.
Chapter 6: Configuring 802.3ad Link Aggregation and Link Redundancy
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