Routing for CGNAT

router static
address-family ipv4 unicast
vrf GPON-IN-All
address-family ipv4 unicast
100.127.128.0/21 202.88.231.100

router static
address-family ipv4 unicast
vrf ASNET-INunlimit-Chn
address-family ipv4 unicast
172.16.28.144/29 202.88.231.111

GW:

router static address-family ipv4 unicast
172.19.189.0/24 202.88.231.66
vrf INVENTUM-IN-ALL
address-family ipv4 unicast
172.19.189.0/24 202.88.231.60

Core:

ip route 172.19.189.0 255.255.255.0 202.88.229.173

ACL: ALI-25-WAN
1850 permit ip 172.19.189.0 0.0.0.255 any

Access Switch:

VLAN:

interface Vlan755
description ****Kovai Digital Communication****
ip address 172.19.189.1 255.255.255.0 secondary
ip address 172.19.166.1 255.255.255.0
ip policy route-map ALI-COIMBATORE
end

Route-map:

route-map ALI-COIMBATORE permit 66
match ip address Kovaidigital-2
set ip next-hop 10.129.0.100

ACL:

Extended IP access list Kovaidigital-2
10 permit ip 172.19.189.0 0.0.0.255 any