https://community.extremenetworks.com/t5/extremeswitching-eos/s-series-vsb-lfr/m-p/60305#M1955 Please see the following knowledge article:<BR /> <BR /> <A href="https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-Virtual-Switch-Bonding-VSB-on-S-Series" target="_blank" rel="nofollow noreferrer noopener">https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-Virtual-Switch-Bonding-VS...</A><BR /> <BR /> It states the following:<BR /> <BR /> - The Link Failure Response (LFR) protocol provides for the configuration of one or more monitor links.<BR /> <BR /> - Setting the LFR priority to the same value for both chassis in the VSB system is not allowed.<BR /> <BR /> - The physical chassis with highest LFR priority in the bonded pair will remain active while placing the chassis with the lower priority into a dormant state.<BR /> <BR /> Ryan<BR /> <BR /> Fri, 15 Dec 2017 21:05:00 GMT Careno__Ryan 2017-12-15T21:05:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/s-series-vsb-lfr/m-p/60304#M1954 Hi<BR /> <BR /> We have installed two S6 chassis, bonding them using VSB.<BR /> <BR /> Each chassis has one fabric blade and one IO blade.<BR /> The VSB bonding ports are connected on the Fabric blade.<BR /> We have connected two LFR ports, one connecting the two Fabric blades and another connecting the two IO blades.<BR /> <BR /> <P class="fancybox-image"><span class="lia-inline-image-display-wrapper" image-alt="a9650c6752394456a9a482386134138d_RackMultipart20171214-41154-e4emfd-Drawing1_inline.jpg"><img src="https://community.extremenetworks.com/t5/image/serverpage/image-id/629i5B01AC824869C66B/image-size/large?v=v2&amp;px=999" role="button" title="a9650c6752394456a9a482386134138d_RackMultipart20171214-41154-e4emfd-Drawing1_inline.jpg" alt="a9650c6752394456a9a482386134138d_RackMultipart20171214-41154-e4emfd-Drawing1_inline.jpg" /></span></P><BR /> <BR /> If we break the VSB bonding ports, both chassis fail, and we have no traffic across any of the two chassis.<BR /> <BR /> We have not set any priority on the LFR ports.<BR /> <BR /> So now for some questions:<BR /> <BR /> 1. Can you have two LFR ports on a bonded chassis.<BR /> 2. Should I ensure that the two LFR ports on chassis 1 have the same priority and the LFR ports on chassis 2 have the same priority.<BR /> <BR /> <BR /> <BR /> Thu, 14 Dec 2017 17:45:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/s-series-vsb-lfr/m-p/60304#M1954 Andre_Brits_Kan 2017-12-14T17:45:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/s-series-vsb-lfr/m-p/60305#M1955 Please see the following knowledge article:<BR /> <BR /> <A href="https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-Virtual-Switch-Bonding-VSB-on-S-Series" target="_blank" rel="nofollow noreferrer noopener">https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-configure-Virtual-Switch-Bonding-VS...</A><BR /> <BR /> It states the following:<BR /> <BR /> - The Link Failure Response (LFR) protocol provides for the configuration of one or more monitor links.<BR /> <BR /> - Setting the LFR priority to the same value for both chassis in the VSB system is not allowed.<BR /> <BR /> - The physical chassis with highest LFR priority in the bonded pair will remain active while placing the chassis with the lower priority into a dormant state.<BR /> <BR /> Ryan<BR /> <BR /> Fri, 15 Dec 2017 21:05:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/s-series-vsb-lfr/m-p/60305#M1955 Careno__Ryan 2017-12-15T21:05:00Z