An ISP is peering with a new provider and wishes to disclose which autonomous system numbers should be allowed through BGP for network transport. Which of the following should contain this…

A Memorandum of Understanding expresses a general, often non-binding agreement of intent between parties and lacks the technical specificity needed to define permitted ASNs.

An ISA is the specific document that captures security requirements and technical parameters for two networks that are peering or interconnecting, including which ASNs are permitted to transit the BGP session. It establishes the rules of engagement at a technical level, making it the appropriate vehicle for specifying routing policy constraints. MOU, OLA, and SLA do not serve this purpose.

An Operating Level Agreement defines internal service responsibilities between departments within the same organization, not the security terms of an external network peering relationship.

A Service Level Agreement defines measurable performance obligations such as uptime and response time, not technical interconnection security parameters like permitted ASNs.