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Unicast flooding issue

Sarafianl1980
Level 1
Level 1

‎08-28-2018 06:00 AM - edited ‎03-08-2019 04:01 PM

Hi,

 

We have a bizarre issue where seeing very degraded performance on a number of vlans on a cat6513 with a SUP720-3b.   Version 12.2(18)SXF8,

 

 

There appears to be loads of flooding going on.  Any idea's on where to begin to troubleshoot this please?  

 

Diagram attached.

 

vlan mac type learn age ports
302 0050.5696.1302 dynamic Yes 120 flood  to vlan302 (unicast)
303 0050.5681.520a dynamic Yes 180 flood  to vlan303 (unicast)
303 0050.568b.1e5a dynamic Yes 60 flood  to vlan303 (unicast)
303 0050.5696.2782 dynamic Yes 60 flood  to vlan303 (unicast)
303 0050.5696.2e23 dynamic Yes 60 flood  to vlan303 (unicast)
303 0050.56ab.470b dynamic Yes 180 flood  to vlan303 (unicast)
303 0050.56ab.76a5 dynamicdsadasdas Yes 0 flood  to vlan303 (unicast)
304 0050.5696.434e dynamic Yes 0 flood  to vlan304 (unicast)
304 0050.5696.5be2 dynamic Yes 0 flood  to vlan304 (unicast)
304 0050.56ab.0288 dynamic Yes 120 flood  to vlan304 (unicast)
304 0050.56ab.70b5 dynamic Yes 420 flood  to vlan304 (unicast)
306 0050.566b.9ccf dynamic Yes 0 flood  to vlan306 (unicast)
306 0050.566b.e1cf dynamic Yes 180 flood  to vlan306 (unicast)
306 0050.5696.3091 dynamic Yes 60 flood  to vlan306 (unicast)
308 0050.5696.0793 dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.0b1f dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.181f dynamic Yes 60 flood  to vlan308 (unicast)
308 0050.5696.1ab5 dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.1c5b dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.2316 dynamic Yes 120 flood  to vlan308 (unicast)
308 0050.5696.340e dynamic Yes 60 flood  to vlan308 (unicast)
308 0050.5696.3826 dynamic Yes 180 flood  to vlan308 (unicast)
308 0050.5696.3cb4 dynamic Yes 60 flood  to vlan308 (unicast)
308 0050.5696.436e dynamic Yes 60 flood  to vlan308 (unicast)
308 0050.5696.4b51 dynamic Yes 240 flood  to vlan308 (unicast)
308 0050.5696.4d64 dynamic Yes 60 flood  to vlan308 (unicast)
308 0050.5696.4f4a dynamic Yes 60 flood  to vlan308 (unicast)
308 0050.5696.5d8b dynamic Yes 120 flood  to vlan308 (unicast)
308 0050.5696.60ce dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.6463 dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.706e dynamic Yes 0 flood  to vlan308 (unicast)
308 0050.5696.7ac3 dynamic Yes 120 flood  to vlan308 (unicast)
310 0050.568a.5456 dynamic Yes 0 flood  to vlan310 (unicast)
310 0050.5696.0d76 dynamic Yes 120 flood  to vlan310 (unicast)
310 0050.5696.0e1d dynamic Yes 60 flood  to vlan310 (unicast)
310 0050.5696.1072 dynamic Yes 60 flood  to vlan310 (unicast)
310 0050.5696.1d39 dynamic Yes 0 flood  to vlan310 (unicast)
310 0050.5696.1ef8 dynamic Yes 60 flood  to vlan310 (unicast)
310 0050.5696.2ca8 dynamic Yes 0 flood  to vlan310 (unicast)
310 0050.5696.32a1 dynamic Yes 360 flood  to vlan310 (unicast)
310 0050.5696.42aa dynamic Yes 60 flood  to vlan310 (unicast)
310 0050.5696.4f18 dynamic Yes 120 flood  to vlan310 (unicast)
310 0050.5696.77ea dynamic Yes 180 flood  to vlan310 (unicast)
324 0050.5696.0fb9 dynamic Yes 0 flood  to vlan324 (unicast)
324 0050.5696.407a dynamic Yes 0 flood  to vlan324 (unicast)
324 0050.5696.6147 dynamic Yes 0 flood  to vlan324 (unicast)
324 0050.5696.7b6d dynamic Yes 0 flood  to vlan324 (unicast)
326 0050.568a.0636 dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.568a.7cd9 dynamic Yes 180 flood  to vlan326 (unicast)
326 0050.5696.019b dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.0acc dynamic Yes 60 flood  to vlan326 (unicast)
326 0050.5696.131a dynamic Yes 120 flood  to vlan326 (unicast)
326 0050.5696.1a2e dynamic Yes 120 flood  to vlan326 (unicast)
326 0050.5696.1a57 dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.1aec dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.2e2c dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.35d5 dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.35fe dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.3c97 dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.3ff3 dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.543e dynamic Yes 60 flood  to vlan326 (unicast)
326 0050.5696.57c5 dynamic Yes 60 flood  to vlan326 (unicast)
326 0050.5696.5bab dynamic Yes 60 flood  to vlan326 (unicast)
326 0050.5696.5e13 dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.5e35 dynamic Yes 120 flood  to vlan326 (unicast)
326 0050.5696.656e dynamic Yes 0 flood  to vlan326 (unicast)
326 0050.5696.6aac dynamic Yes 120 flood  to vlan326 (unicast)
326 0050.5696.6e7b dynamic Yes 60 flood  to vlan326 (unicast)
328 0050.568a.2924 dynamic Yes 60 flood  to vlan328 (unicast)
328 0050.5696.14bf dynamic Yes 60 flood  to vlan328 (unicast)
328 0050.5696.178e dynamic Yes 120 flood  to vlan328 (unicast)
328 0050.5696.2001 dynamic Yes 0 flood  to vlan328 (unicast)
328 0050.5696.26d6 dynamic Yes 60 flood  to vlan328 (unicast)
328 0050.5696.348d dynamic Yes 120 flood  to vlan328 (unicast)
328 0050.5696.5392 dynamic Yes 60 flood  to vlan328 (unicast)
328 0050.5696.5615 dynamic Yes 180 flood  to vlan328 (unicast)
328 0050.5696.5c4e dynamic Yes 120 flood  to vlan328 (unicast)
328 0050.5696.6312 dynamic Yes 0 flood  to vlan328 (unicast)
328 0050.5696.7f58 dynamic Yes 180 flood  to vlan328 (unicast)
328 0050.56ab.41ff dynamic Yes 0 flood  to vlan328 (unicast)
328 0050.56ab.72cf dynamic Yes 60 flood  to vlan328 (unicast)
329 0050.5681.66fc dynamic Yes 0 flood  to vlan329 (unicast)
412 0050.568b.1dcd dynamic Yes 180 flood  to vlan412 (unicast)
423 0050.568b.3e1b dynamic Yes 180 flood  to vlan423 (unicast)
438 0050.568b.2790 dynamic Yes 60 flood  to vlan438 (unicast)
452 0050.5696.6a98 dynamic Yes 180 flood  to vlan452 (unicast)
947 0050.56a1.3450 dynamic Yes 120 flood  to vlan947 (unicast)
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3 Replies 3

paul driver
VIP
VIP

‎08-28-2018 08:57 AM

Hello

apply strom controll if possible with a high threshold with error recovery and monitor its statistics should give you a indication from where its occurring 

look for flapping interfaces and high stp tcn’s 

manually  prune off any unwarranted vlans traversing your trunks 


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This then could assist others on these forums to find a valuable answer and broadens the community’s global network.

Kind Regards
Paul
0 Helpful

Sarafianl1980
Level 1
Level 1
In response to paul driver

‎08-30-2018 04:33 AM

Thanks for a steer Paul. Will be back in touch.
0 Helpful

Sarafianl1980
Level 1
Level 1
In response to Sarafianl1980

‎08-30-2018 05:47 AM

Hi Paul,

Unfortunately we have the WS-X6548-GE-TX line cards which do not support stom-control.
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