| 8.8 | Issue with Using Private AS Numbers | ||
| 8.8.9 | The ORIGIN attribute |
The ORIGIN attribute is a well-known
mandatory attribute (type code 1), which indicates the origin of the
routing update. BGP allows three types of origins:
BGP considers the ORIGIN attribute in its decision-making process to establish a preference ranking among multiple routes. Specifically, BGP prefers the path with the lowest origin type, where IGP is lower than EGP, and EGP is lower than INCOMPLETE.
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