Automatic Link Aggregation on ESXi-facing Ports for vCenter


Currently, automatic Link Aggregation (LAG) is only supported between Pluribus Networks switches. With this new feature, automatic Link Aggregation (LAG) includes ports between Pluribus Networks switches and ESXi hosts.


Netvisor One implements LLDP and LACP to bundle the ports. Since there are no custom type-length-value (TLV) probes, Netvisor One implements standard LLDP TLVs to uniquely identify ESXi hosts. The system description TLV is used to identify ESXi hosts and the system name is used to uniquely identify a specific ESXi host.


LACP mode is enabled and set to active on auto-lag with a fallback-option of individual to ensure that there is extra robustness in bundling and ensure that ports are bundled only if ESXi host is running LACP to avoid any data path issues.

 

Netvisor One provides a new parameter to enable or disable trunking towards hosts. The default value is off.

 

The current global parameter auto-trunk needs to be ON (default) for this new settings to take effect. Setting auto-trunk to off turns off all trunking.

 

CLI (network-admin@Leaf1) > system-settings-show

 

auto-host-trunk:               on

 

 

Example output from trunk-show, port-show and lldp-show.

 

CLI (network-admin@Leaf1) > trunk-show format trunk-id,switch,name,ports,lacp-mode,lacp-fallback,lacp-individual,status,

 

trunk-id   name     ports lacp-mode lacp-fallback  lacp-individual status   

--------  --------  ----- --------- -------------  --------------- -----------     

129        auto-129  42,44  active    individual    none            up,PN-other       

 


CLI (network-admin@Leaf1) > port-show port 42,44 format all


port bezel-port         status                           rswitch rem-ip     rem-mac           lport config  trunk

---- ---------- --------------------------------------- -------- -------- ----------------- ------ ------ --------

42    42         up,PN-other,LLDP,trunk,LACP-PDUs,vlan-up 2987    ::        00:00:00:00:00:00 42    fd,10g  auto-129

44    44         up,PN-other,LLDP,trunk,LACP-PDUs,vlan-up 2987    ::        00:00:00:00:00:00 44    fd,10g  auto-129



CLI (network-admin@Leaf1) > lldp-show

 

local-port chassis-id    port-id            port-desc                        sys-name                      

---------- ---------- ----------------- ------------------------------    ------------------------------

42         vmnic2     00:50:56:98:07:56 port 25 on dvSwitch DEV-CN-Tests-1   esx-dev01.pluribusnetworks.com

44         vmnic3     00:50:56:98:07:57 port 24 on dvSwitch DEV-CN-Tests-1   esx-dev01.pluribusnetworks.com