I need to implement a new DHCP server configuration through a routing instance, the configuration was loaded but at the time of migrating it did not work,
that is, it did not deliver the IP to the client, so I have my config.
set routing-instances CGNAT_B2B instance-type vrf
set routing-instances CGNAT_B2B interface ae77.500
set routing-instances CGNAT_B2B interface ae77.3500
set routing-instances CGNAT_B2B interface ae77.3600
set routing-instances CGNAT_B2B interface ae77.3900
set routing-instances CGNAT_B2B system services dhcp-local-server group PRUEPA interface ae77.500
set routing-instances CGNAT_B2B system services dhcp-local-server group PRUEPA interface ae77.3500
set routing-instances CGNAT_B2B system services dhcp-local-server group PRUEPA interface ae77.3600
set routing-instances CGNAT_B2B system services dhcp-local-server group PRUEPA interface ae77.3700
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet network 10.248.15.0/24
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet range R1 low 10.248.15.2
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet range R1 high 10.248.15.254
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet dhcp-attributes maximum-lease-time 82800
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet dhcp-attributes server-identifier 10.229.18.1/32
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet dhcp-attributes name-server 8.8.8.8
set routing-instances CGNAT_B2B access address-assignment pool PRUEPA family inet dhcp-attributes router 10.248.15.1
set routing-instances CGNAT_B2B vrf-table-label
set interfaces ae77 unit 500
set interfaces ae77 unit 500 description ""Prueba1""
set interfaces ae77 unit 500 vlan-id 500
set interfaces ae77 unit 3500
set interfaces ae77 unit 3500 description ""JAVIM-FAIB001_757753_102400Kbps1""
set interfaces ae77 unit 3500 vlan-id 3500
Based on the configuration that I could be missing and what tests I could perform