Description

This article describes the issue of being unable to access the management IP address on the fxp0 interface of the secondary node in a chassis cluster. The secondary node's routing sub-system is not running.

 

Symptoms

  • Unable to access the management IP address on the fxp0 interface of the secondary node in a chassis cluster. This is due to the secondary node's routing sub-system not running.

  • The fxp0 interface is reachable only by hosts that are on the same subnet as the management IP address; but if the host is on a different subnet than the management IP, it fails to connect.

 

Solution

This is expected behavior and works as per design. The secondary cluster member’s RE is not operational, until failover. The RPD will not be working in the secondary node when the primary is active. When management access is required, the backup router's configuration statement can be used.

With the backup router's configuration, the secondary node can be accessed from an external subnet for management purposes.

A sample configuration of the backup-router configuration is as follows:

groups {
    node0 {
        system {
            host-name cluster-primary;
            backup-router 10.10.250.1 destination 192.168.0.0/16;
        }
        interfaces {
            fxp0 {
                unit 0 {
                    family inet {
                        address 10.10.250.3/24;
                    }
                }
            }
        }
    }
    node1 {
        system {
            host-name cluster-secondary;
            backup-router 10.10.250.1 destination 192.168.0.0/16;
        }
        interfaces {
            fxp0 {
                unit 0 {
                    family inet {
                        address 10.10.250.4/24;
                    }
                }
            }
        }
    }
}

Note : The destination should not be "0.0.0.0/0." This must be a proper subnet range /8 or higher. Multiple destinations can be included, if the management IP address range is not contiguous.

For more information about the backup-router configuration, refer to  Configure a Backup Router .

 

Modification History

2020-01-08: Removed reference to J-Series

 

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