Cisco Crosswork Cloud User Guide

Bias-Free Language

The documentation set for this product strives to use bias-free language. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Learn more about how Cisco is using Inclusive Language.

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Updated:: January 23, 2020

ROA Failure

This alarm indicates whether the ROA validity state of the monitored prefix is invalid. see Any advertisement for the monitored prefix with origin AS that is not in any ROA record covering the prefix is a violating advertisement. The alarm clears either due to the addition of ROA records that include all observed Origin ASNs of the prefix or all records expiring. Specifically, this alarm does not activate if there are no ROA records (none existed or all are expired).

For more information on ROAs, see ripe.net.

Possible Problem Detected

This alarm can help identify prefix hijack attempts.

Relevant Alarm Rule Configurations

The following option must be configured when adding this alarm rule to a Prefix policy configuration (External Routing Analysis > Configure > Policies > Add Policy > Prefix Policy > Add Rule > ROA Failure):

Thresholds

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