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Cisco Bug: CSCuj74358 - CLI to enable flooding of multicast on portfast ports

Last Modified

Nov 27, 2020

Products (35)

  • Cisco Catalyst 3750 Series Switches
  • Cisco Catalyst 3560X-48P-S Switch
  • Cisco Catalyst 3560X-48T-E Switch
  • Cisco Catalyst 3560X-48PF-S Switch
  • Cisco Catalyst 3750X-48P-E Switch
  • Cisco Catalyst 3750X-48PF-L Switch
  • Cisco Catalyst 3750X-24T-S Switch
  • Cisco Catalyst 3750X-24S-S Switch
  • Cisco Catalyst 3750X-48PF-E Switch
  • Cisco Catalyst 3560X-48T-L Switch
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Known Affected Releases


Description (partial)

enhancement defect for introduction of cli for multicast flooding on portfast ports on 3750


Related Community Discussions

Multicast flooding
We had an issue last week at a remote location. Every few minutes the IPTV system would pixilate for a few seconds - there was no significant impact to unicast traffic. PIM-SM was enabled on the L3 VLAN interface - creating the local IGMP querier - the IPTV headend was connected to a separate VLAN - with users in a "User" VLAN. We monitored the PIM state during a problem period - no change was seen - Inbound & outbound interfaces remained unchanged. It was clear this issue was at a IGMP snooping ...
Latest activity: Jan 29, 2020
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