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Cisco Bug: CSCvs32425 - The "ip igmp static-oif" command can take effect on the PIM DR and non-DR interfaces (SVI)

Last Modified

Jan 13, 2020

Products (61)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 3548 Switch
  • Cisco Nexus 3636C-R Switch
  • Cisco Nexus 92348GC-X Switch
  • Cisco Nexus 3548-X Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 31108TC-V Switch
  • Cisco Nexus 92160YC-X Switch
  • Cisco Nexus 92304QC Switch
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Known Affected Releases

7.0(3)I7(7) 9.3(1)

Description (partial)

Symptom:
Multicast stream
   |
L3 link
   |
N9K-1 ---- L3 link ---- N9K-2  (no vPC involved)
      \                         /
        \   VLAN 101    /
          \                 /
             L2 switch
                   |
                   |
              Receiver

Configured "ip igmp static-oif x.x.x.x" on both (SVI 101) of N9Ks.

N9K (DR and non-DR interfaces) will have the static OIF for SVI and it causes the duplicate multicast traffic due to two valid OIFs.

Conditions:
Configured "ip igmp static-oif x.x.x.x" on both (SVI 101) of N9Ks. 
They are PIM neighbors.
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Bug Details Include

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