I have a ISP customer with AS number :xxxx Now he come up with further customer xxxx AS. Presently we are doing prefix based filtering at my end.
Now i want to use regular expression with " ^xxxx_ ", so that any prefix ill be allowed with ASxxxx and behinf that AS Now with this regular expression threat is what happen if my customer will leak internet routes ?
Is there any other solution with which i can allow my customer (xxxx) prefixes other that prefix-list
Thanks in advance