11-30-2022 01:11 AM
Please i need a suggestion or an advice on what could be the issue ,
I have an extreme switch connecting to a juniper SRX Firewall through a LAG (5 interface lag together) connection .
Then recently i noticed out of the LAG only one of the link is picking traffic while others are not doing anything . what could be the problem ? as my traffic is expected to grow as we get into festive period.
Below show command for reference on the extreme switch BD-8810
chassis cluster configuration on the firewall
show configuration |match redundancy| display set
set chassis cluster redundancy-group 0 node 0 priority 250
set chassis cluster redundancy-group 0 node 1 priority 100
set chassis cluster redundancy-group 1 node 0 priority 250
set chassis cluster redundancy-group 1 node 1 priority 100
set chassis cluster redundancy-group 1 preempt
set chassis cluster redundancy-group 1 interface-monitor xe-7/2/0 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-19/2/0 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-7/2/1 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-19/2/1 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-7/2/2 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-7/2/3 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-19/2/2 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-19/2/3 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-7/2/4 weight 255
set chassis cluster redundancy-group 1 interface-monitor xe-19/2/4 weight 255
set interfaces reth0 redundant-ether-options redundancy-group 1
11-30-2022 07:04 AM
On the ERS side, an MLT/LAG by default does L2 MAC based hashing. Which can be sub-optimal if the ERS is connected to a router, towards which all traffic uses the same MAC.
You can make ERS do L3 IP based hashing on the MLT/LAG, but you need to set "load-balance advanced" on the MLT group.