Enable IPv6 and IGMP snooping on VLAN 3939 required for VxRail

Home > VMWare platform > VxRail > Enable IPv6 and IGMP snooping on VLAN 3939 required for VxRail

VxRail by default requires VLAN 3939 for nodes to discover each other. Ideally on this VLAN we should enable IGMP snooping and IPv6. The same can be done for a few switch makes as follows:

Dell switch

config t
    ip igmp snooping enable
    ipv6 mld snooping enable
    exit
show ipv6 mld snooping interface vlan 3939

Aruba or HP switch

config t
   vlan 3939
     ip igmp
     ipv6 enable
     ipv6 mld enable
     ip igmp snooping enable
     exit

show ip igmp snooping vlan 3939

Refer:

• https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-7007/index.html#GUID-4D644E1D-48F2-4C41-9733-AC1ED5219331.html
• https://www.arubanetworks.com/techdocs/AOS-CX/10.04/HTML/5200-7007/index.html#GUID-F52A1AC1-09E6-4B28-9C3C-1AFDD61D54EF.html

Cisco switch

config t
   ipv6 unicast-routing 
   ip igmp snooping
   ip igmp snooping vlan 3939
   ip igmp snooping querier
   vlan 3939
       ip igmp snooping
       end

show ip igmp snooping
show ip igmp snooping vlan 3939
show ipv6 interface
show ipv6 mld snooping interface vlan 3939

Optionally we can consider removing storm-control for multicast and max-group settings, if above is not enough

no storm-control multicast

show running-config interface <int-name>
config t
  int <int-name>
  no ip igmp max-groups <number>

Creating VLAN 3939 on old Cisco Switches

On old Cisco switch VLANs might be restricted to 1024 only. If it is acceptable to environment shift to VTP version 3 and try. If it still does not works change vtp mode to transparent. In transparent mode the switch wont participate in VTP, neither as client and nor as server.

config t
   vtp version 3
   vlan 3939
      name vxrail
      no shut 
      exit

   #if above gives error then 
   vtp mode transparent
   vlan 3939
      name vxrail
      no shut
      end
show vlan brief

Refer:

• https://community.cisco.com/t5/switching/setting-up-vlans-greater-than-1000/td-p/657467
• https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst1000/software/releases/15_2_7_e/configuration_guides/vlan/b_1527e_vlan_c1000_cg/configuring_vlan.html

Home > VMWare platform > VxRail > Enable IPv6 and IGMP snooping on VLAN 3939 required for VxRail