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Repeated LAN/WLAN outage possibly caused by Multicast

I had the following alert reporting non-stop. No ports are using VLAN 513 on both my redundant cores or my 3 access switches, 1 per floor.  2nd floor reporting total network outage (LAN and WLAN) about once every 4 or 5 days for about 2 hours before it auto-resolves.  My resolution was to change the Standby Groups for each VLAN to match (or nearly) their VLAN number. That didn't resolve the problem of a repeated network outage for about 2 hours every 4 or 5 days.  Instead of stopping the problem, it just stopped this message.


*Nov 16 10:58:04: %HSRP-4-DIFFVIP1: Vlan513 Grp 1 active routers virtual IP address 10.164.3.254 is different to the locally configured address 10.64.113.254

*Nov 16 10:58:34: %HSRP-4-DIFFVIP1: Vlan513 Grp 1 active routers virtual IP address 10.164.3.254 is different to the locally configured address 10.64.113.254

*Nov 16 10:59:04: %HSRP-4-DIFFVIP1: Vlan513 Grp 1 active routers virtual IP address 10.164.3.254 is different to the locally configured address 10.64.113.254

*Nov 16 10:59:34: %HSRP-4-DIFFVIP1: Vlan513 Grp 1 active routers virtual IP address 10.164.3.254 is different to the locally configured address 10.64.113.254

*Nov 16 11:00:04: %HSRP-4-DIFFVIP1: Vlan513 Grp 1 active routers virtual IP address 10.164.3.254 is different to the locally configured address 10.64.113.254

Now it only reports this message for what appears to be the operating hours of this site, so I'm guessing the normal network traffic is causing this to happen, whatever it is:

*Nov 22 07:09:19: %PIM-5-NBRCHG: neighbor 10.64.113.252 DOWN on interface Vlan13 DR

*Nov 22 07:09:19: %PIM-5-DRCHG: DR change from neighbor 10.64.113.252 to 10.64.113.251 on interface Vlan13

*Nov 22 07:10:01: %PIM-5-NBRCHG: neighbor 10.64.113.252 UP on interface Vlan13

*Nov 22 07:10:01: %PIM-5-DRCHG: DR change from neighbor 10.64.113.251 to 10.64.113.252 on interface Vlan13

*Nov 22 08:55:45: %PIM-5-NBRCHG: neighbor 10.64.113.252 DOWN on interface Vlan13 DR

*Nov 22 08:55:45: %PIM-5-DRCHG: DR change from neighbor 10.64.113.252 to 10.64.113.251 on interface Vlan13

*Nov 22 08:55:58: %PIM-5-NBRCHG: neighbor 10.64.113.252 UP on interface Vlan13

*Nov 22 08:55:58: %PIM-5-DRCHG: DR change from neighbor 10.64.113.251 to 10.64.113.252 on interface Vlan13

*Nov 22 09:02:39: %PIM-5-NBRCHG: neighbor 10.64.113.252 DOWN on interface Vlan13 DR

*Nov 22 09:02:39: %PIM-5-DRCHG: DR change from neighbor 10.64.113.252 to 10.64.113.251 on interface Vlan13

*Nov 22 09:02:52: %PIM-5-NBRCHG: neighbor 10.64.113.252 UP on interface Vlan13

*Nov 22 09:02:52: %PIM-5-DRCHG: DR change from neighbor 10.64.113.251 to 10.64.113.252 on interface Vlan13

*Nov 22 11:54:29: %PIM-5-NBRCHG: neighbor 10.64.3.252 DOWN on interface Vlan513 non DR

*Nov 22 11:54:30: %PIM-5-NBRCHG: neighbor 10.164.3.252 DOWN on interface Vlan513 DR

*Nov 22 11:54:30: %PIM-5-DRCHG: DR change from neighbor 10.164.3.252 to 10.164.3.251 on interface Vlan513

*Nov 22 11:54:35: %PIM-5-NBRCHG: neighbor 10.64.113.251 DOWN on interface Vlan13 non DR

*Nov 22 11:54:35: %PIM-5-NBRCHG: neighbor 10.64.3.251 DOWN on interface Vlan513 non DR

*Nov 22 11:54:38: %PIM-5-NBRCHG: neighbor 10.64.113.252 DOWN on interface Vlan13 DR

*Nov 22 11:54:38: %PIM-5-DRCHG: DR change from neighbor 10.64.113.252 to 10.64.3.252 on interface Vlan13

*Nov 22 11:54:42: %PIM-5-NBRCHG: neighbor 10.164.3.251 DOWN on interface Vlan513 DR

*Nov 22 11:54:42: %PIM-5-DRCHG: DR change from neighbor 10.164.3.251 to 10.64.113.252 on interface Vlan513

Can anyone please help me figure out what's happening to cause this repeated outage?  Customers are getting annoyed with the outages.  Thank you!

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