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OSPF VLAN Interface (Secondary IP) - No such multicast interface error...no other issues

 
Rich R_1
Advisor

OSPF VLAN Interface (Secondary IP) - No such multicast interface error...no other issues

Setup:

VLAN 254

  1. 10.1.254.1/30
  2. 10.2.254.1/30 (Secondary)
  3. ip ospf 10.1.254.1 area 0.0.0.1
  4. ip ospf 10.2.254.1 area 0.0.0.1

However, on the two switches I am getting the following error:

03132 OSPF: RECV: Discarding packet on interface Unknown :
No such multicast interface (15 times in 60 seconds)

This of course doesn't happen on a VLAN interface with just 1 IP address assigned to it.  I do have multicast routing enabled with PIM-Dense, though I don't think that should make too much of a difference.  Can you have two P2P addresses for OSPF on the same vlan?

3 REPLIES 3
Rich R_1
Advisor

Re: OSPF VLAN Interface (Secondary IP) - No such multicast interface error...no other issues

Sorry the VLAN 254 config posted is on the Distribution switch, the other two OSPF switches (3800/5400R) are producing those errors.  I did debug the OSPF process and see that 10.1.254.1/30 is coming into the switch at 10.2.254.1/30.  Just trying to consolidate vlans, or I can do a P2Multipoint as well...which probably will resolve these errors.

16again
Respected Contributor

Re: OSPF VLAN Interface (Secondary IP) - No such multicast interface error...no other issues

You could try setting interface type to point to multipoint  , and specifying point to point on remote endpoints.  Also specify ospf neighbors manually..

Rich R_1
Advisor

Re: OSPF VLAN Interface (Secondary IP) - No such multicast interface error...no other issues

I don't "think" you can do that on the Provision models?