Description

By default, a user will not be able to manage an EX9200 device using the Backup RE's management interface. If you do not have the RPD (routing daemon) running on the backup RE (routing engine), you will not be able to manage the EX9200 using this interface.

Solution

Similar to the EX8200 and EX4200, for an EX9200, you will not be able to redirect requests to the Backup RE by default. Therefore, you need to set the following configurations:

set groups re0 interfaces fxp0 unit 0 family inet address 10.209.72.240/23
set groups re1 interfaces fxp0 unit 0 family inet address 10.209.72.241/23

set apply-groups re0
set apply-groups re1

set system backup-router 10.209.73.254 <--- .254 is the gateway used to connect to this interface.

In this example setup, .241 is the primary RE's IP.
 
Routing Engine status:
Slot 0:
Current state Backup

Routing Engine status:
Slot 1:
Current state Master
 
Even though the primary management ethernet link is down, we can still reach the 10.209.72.240 IP address.
 
C:\Users\parthas>ping 10.209.72.240 -t

Pinging 10.209.72.240 with 32 bytes of data:
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62
Reply from 10.209.72.240: bytes=32 time=1ms TTL=62

Ping statistics for 10.209.72.240:
Packets: Sent = 8, Received = 8, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 1ms, Maximum = 1ms, Average = 1ms
Control-C

Modification History

2021-03-24: Updated the article terminology to align with Juniper's Inclusion & Diversity initiatives.