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ALB load balancing broadcast/flood all ports?

JonB
Occasional Contributor

ALB load balancing broadcast/flood all ports?

We have 2*E2510-24G with a few VLANs and port 1+2 is configured as Trk1 with all the VLANs. We notice when we have a Linux server connected to a port on each switch and bond the NICs using ALB (Adaptive Load Balancing) that during traffic load, the switch seems to broadcast/flood all the ports with the traffic. If we configure it using Active/Passive instead, the problem goes away.

 

We notice this because we SNMP monitor traffic on all ports and during copying of large files to/from this server, even ports where VERY low-traffic servers are connected, receive 100+ Mbit traffic.

 

We have seen some discussions where ALB can behave strange when connected to different switches.

 

Is this normal behaviour? Comments?

4 REPLIES
testmado662
Advisor

Re: ALB load balancing broadcast/flood all ports?

Hello,

We got the same issue but we are using Lefthand 12.6.

JonB, what switch are you using ?

Regards

Dennis Handly
Acclaimed Contributor

Re: ALB load balancing broadcast/flood all ports?

> We got the same issue but we are using Lefthand 12.6.

 

FYI: This is the StoreVirtual OS.

JonB
Occasional Contributor

Re: ALB load balancing broadcast/flood all ports?

I'm not really sure since this was 6 years ago but looking back at my emails we contacted HP support. What we did in the end was to update the network switches (to W.14.65?) . We might also been doing some configuration on the flow control.

Linkk
Frequent Advisor

Re: ALB load balancing broadcast/flood all ports?

This series is retired now, but you should contact HP support with this strange behavior.

Be sure to be on the latest firmware version before contacting support.