454 | Remote Monitoring (RMON)
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RMON implements the following standard request for comment (RFCs) (for more information, refer to 
RFC and I-D Compliance):
• RFC-2819
• RFC-3273
• RFC-3434
Fault Recovery
RMON provides the following fault recovery functions:
Interface Down—When an RMON-enabled interface goes down, monitoring continues. However, all data 
values are registered as 0xFFFFFFFF (32 bits) or ixFFFFFFFFFFFFFFFF (64 bits). When the interface 
comes back up, RMON monitoring processes resumes. 
Note: A network management system (NMS) should be ready to interpret a down interface 
and plot the interface performance graph accordingly.