To meet the requirements on router R-WEST, two distinct services must be configured.

1. Logging: To satisfy the first requirement, the service sequence-numbers command is used to prepend a sequence number to each locally generated log message. The service timestamps log datetime command is used to add the date and time to these log messages, fulfilling the requirement for a timestamp.
2. SNMP Traps: To satisfy the second requirement, the snmp-server enable traps ospf command is executed. This command specifically enables the generation of OSPF-related traps as defined in the standard RFC 1253 MIB. This includes traps for OSPF events and for state changes of OSPF-participating interfaces (e.g., ospfIfStateChange).

Cisco Systems. (2023). Cisco IOS XE Software-Defined WAN and Services Configuration Guide, Release 17.x - Configuring Logging Services.

Section: service sequence-numbers Command. States: "To specify that sequence numbers be affixed to log messages, use the service sequence-numbers command..."

Section: service timestamps Command. States: "To configure the time-stamping of logging and debugging messages, use the service timestamps command... log datetime... Specifies that the date and time be affixed to logging messages."

Cisco Systems. (2023). Cisco IOS XE Network Management Command Reference - snmp-server community to snmp-server view.

Section: snmp-server enable traps Command. Documents the ospf keyword: "Enables OSPF traps defined in RFC 1253."

Moy, J. (1991). RFC 1253: OSPF Version 2 Management Information Base. Internet Engineering Task Force (IETF).

Section: 7. Traps. Defines the OSPF-specific traps, including ospfIfStateChange, which directly relates to the requirement for "participating interface state changes".

DOI: https://doi.org/10.17487/RFC1253