asnLong 
  The long ASN for the virtual interface. The valid range is from 1 to 4294967294 for BGP configuration.
You can use asnLong or asn, but not both. We recommend using asnLong as it supports a greater pool of numbers.
- The - asnLongattribute accepts both ASN and long ASN ranges.
- If you provide a value in the same API call for both - asnand- asnLong, the API will only accept the value for- asnLong.