https://community.extremenetworks.com/t5/extremeswitching-ers/traffic-only-going-through-one-link-in-lag-setup/m-p/93960#M303 <P>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.</P><P>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.</P> Wed, 30 Nov 2022 15:04:07 GMT Ludovico_Steven 2022-11-30T15:04:07Z https://community.extremenetworks.com/t5/extremeswitching-ers/traffic-only-going-through-one-link-in-lag-setup/m-p/93952#M302 <P>Please i need a suggestion or an advice on what could be the issue ,<BR />I have an extreme switch connecting to a juniper SRX Firewall through a LAG (5 interface lag together) connection .<BR />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.</P><P>Below show command for reference on the extreme switch BD-8810</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ola_0-1669799134607.png" style="width: 400px;"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/6254iAC2C644BDC1822FF/image-size/medium?v=v2&amp;px=400" role="button" title="ola_0-1669799134607.png" alt="ola_0-1669799134607.png" /></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ola_1-1669799172529.png" style="width: 400px;"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/6255i5DF94D29547813FA/image-size/medium?v=v2&amp;px=400" role="button" title="ola_1-1669799172529.png" alt="ola_1-1669799172529.png" /></span></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ola_5-1669799403232.png" style="width: 400px;"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/6259i5F26EEEC881825A0/image-size/medium?v=v2&amp;px=400" role="button" title="ola_5-1669799403232.png" alt="ola_5-1669799403232.png" /></span></P><P><FONT face="arial black,avant garde"><U><STRONG>chassis cluster configuration on the firewall</STRONG></U></FONT></P><P>show configuration |match redundancy| display set<BR />set chassis cluster redundancy-group 0 node 0 priority 250<BR />set chassis cluster redundancy-group 0 node 1 priority 100<BR />set chassis cluster redundancy-group 1 node 0 priority 250<BR />set chassis cluster redundancy-group 1 node 1 priority 100<BR />set chassis cluster redundancy-group 1 preempt<BR />set chassis cluster redundancy-group 1 interface-monitor xe-7/2/0 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-19/2/0 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-7/2/1 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-19/2/1 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-7/2/2 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-7/2/3 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-19/2/2 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-19/2/3 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-7/2/4 weight 255<BR />set chassis cluster redundancy-group 1 interface-monitor xe-19/2/4 weight 255<BR />set interfaces reth0 redundant-ether-options redundancy-group 1</P> Wed, 30 Nov 2022 09:11:53 GMT https://community.extremenetworks.com/t5/extremeswitching-ers/traffic-only-going-through-one-link-in-lag-setup/m-p/93952#M302 ola 2022-11-30T09:11:53Z https://community.extremenetworks.com/t5/extremeswitching-ers/traffic-only-going-through-one-link-in-lag-setup/m-p/93960#M303 <P>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.</P><P>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.</P> Wed, 30 Nov 2022 15:04:07 GMT https://community.extremenetworks.com/t5/extremeswitching-ers/traffic-only-going-through-one-link-in-lag-setup/m-p/93960#M303 Ludovico_Steven 2022-11-30T15:04:07Z