This is a string containing the autonomous system path sent to this peer in the AS_PATH attribute for this Adj-RIB-Out route. If this path contains four-octet AS numbers and the peer does not support these a two-octet AS_PATH attribute and associated AS4_PATH attribute will be advertised to the peer instead as detailed in RFC 4893. However, this field will report the four-octet AS_PATH that would have been advertised to the peer if it had supported four-byte AS numbers. Two-octet AS numbers appear as four-octet numbers by adding two bytes of zero padding. The format of the string is simply the AS_PATH attribute. This can be converted to a more readable format by the management agent.