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Configuring Redundant Ethernet Interfaces—Quick Configuration

You can use J-Web Quick Configuration to quickly configure redundant Ethernet (reth) interfaces. A redundant Ethernet interface is a pseudointerface that manages two “child” physical interfaces, one on each node of the cluster. Configuration parameters set for a redundant Ethernet interface are inherited by its child interfaces. A redundant Ethernet interface allows the chassis cluster to share one IP address across two links. When a redundancy group that the redundant Ethernet interface belongs to fails over, its redundant Ethernet interfaces fail over with it and their interfaces on the new node become active.

Before configuring redundant Ethernet interfaces, you must specify the reth-count so that reth interfaces will show in the configuration or J-Web interfaces screen. For example, to specify that there will be five redundant Ethernet interfaces, enter:

user@host# set chassis cluster reth-count 5

Note that the number of reth interfaces configured determines the number of redundancy groups that can be configured. For information about the maximum number of redundant Ethernet interfaces allowed for each device type, see the Junos OS Security Configuration Guide.

Redundant Ethernet Interface Configuration page shows the Redundant Ethernet Interface Configuration page.

To configure redundant Ethernet interfaces with J-Web Quick Configuration:

  1. Select Configure>Interfaces.
  2. Click an interface name by which to group physical Ethernet interfaces for redundancy. See .
  3. To add an interface to a redundant Ethernet interface, click Add.
  4. Fill in the parameter settings for the logical interfaces as described in Table 141. For details, see the Junos OS Interfaces and Routing Configuration Guide.
  5. Fill in the information for Redundant Parent to specify the redundant parent Ethernet interface of the child physical interface.

Table 141: Redundant Ethernet Interface Options




Logical Interfaces

Add Logical Interfaces

Defines one or more logical units that you connect to this physical redundant Ethernet interface. You must define at least one logical unit for a redundant Ethernet interface.

Click Add.

To delete a logical interface, select the check box corresponding to the interface you want to delete and click Delete.

High Availability

Redundancy Number

Specifies the number of the redundancy group to which the redundant interface belongs. Failover properties of the interface are inherited from the redundancy group.

Select a number from 0 through 225.

Loop Back

Enables or disables the loopback option.

By default, the loopback is disabled. Select Yes to enable loopback mode.

Flow Control

Enables flow control on the Ethernet interface.

Select Yes.

Sources Filtering

Enables the filtering of media access control (MAC) source addresses to block all incoming packets to that interface.

By default, the source address filtering is disabled. Select Yes.

Redundant Parent

Specifies the name of the redundant Ethernet interface that a physical interface is associated with to form a redundant Ethernet interface pair.

Specify a redundant Ethernet interface name.

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