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Cisco Bug: CSCvv52521 - Enh: Block route-map matching 224.0.0.0/4 from being used as an ssm pattern policy route-map

Last Modified

Aug 31, 2020

Products (1)

  • Cisco Application Policy Infrastructure Controller (APIC)

Known Affected Releases

4.2(4o)

Description (partial)

Symptom:
Using a multicast route-map that matches 224.0.0.0/4 as an SSM Pattern Policy route-map can cause the implicit 224.0.0.0/4 installed on leafs to get deleted. This can result in mc_fib_miss drops if multicast traffic hits a leaf that doesn't have the specific multicast destination route (example would be transit leaf ftag scenarios). This seems more like a misconfig since SSM should be the 232.0.0.0/8 group range, not all groups. Raising this enhancement to block this misconfig.

Conditions:
n/a
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