To isolate management traffic in a non-default routing-instance on Junos-based devices, you can use

the set system management-instance and set routing-instances mgmt_junos commands12.

set system management-instance: This command associates the management interface (usually

named fxp0 or em0 for Junos OS, or re0:mgmt-* or re1:mgmt-* for Junos OS Evolved) with the non-

default virtual routing and forwarding (VRF) instance1. After you configure the non-default

management VRF instance, management traffic no longer has to share a routing table with other

control traffic or protocol traffic1.

set

routing-instances

mgmt_junos:

This

command

creates

a

new

routing

instance

named mgmt_junos. The name of the dedicated management VRF instance is reserved and

hardcoded

as mgmt_junos;

you

cannot

configure

any

other

routing

instance

by

the

name mgmt_junos1.

Therefore, options C and D are correct. Options A and B are not correct because they attempt to

assign an interface to the mgmt_junos routing instance, which is not necessary for isolating

management traffic1.