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Can I combine two port media types with different maximum speed to form a LAG in EXOS

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TitleCan I combine two port media types with different maximum speed to form a LAG in EXOS
  • Can i combine two or more ports together with media types having different maximum speed to form a LAG?
  • EXOS 
  • SFP & SFP+
  • LAG
  • No, port media types (SFP & SFP+) with different maximum speed (1G & 10G) cannot be combined together to form a LAG.
  • In EXOS, the following two conditions must meet when creating a LAG (sharing group) with two or more ports:
  1. Port Speed has to be the same.
  2. Port media type could be different but maximum speed for both media types MUST be same.
Therefore, it has to be either SFP+(10G)<->SFP+(10G) & SFP+(1G)<->SFP+(1G) OR SFP(1G)<->SFP(1G) combination of ports to form a LAG.
  • For example, you have two 1G SFP port media types with different maximum port speed
Switch Name:                      Media Type:                Maximum Port Speed:

X450G2-48p-10G4 <-------------->     SFP+     <----------->       10G 
X450G2-48p-G4   <-------------->     SFP      <----------->       1G 

Slot-1 Stack.3 # show port 1:28, 2:25 configuration no-refresh
Port Configuration
Port     Virtual    Port  Link  Auto   Speed      Duplex   Flow  Load   Media
         router     State State Neg  Cfg Actual Cfg Actual Cntrl Master Pri Red
1:28     VR-Default  E      A   OFF  10000 1000 AUTO FULL    SYM  1:28    SX
2:25     VR-Default  E      A    ON  Auto  1000 FULL FULL    SYM          SX
  • You have an existing LAG with port 1:28 being a master port of the LAG
Slot-1 Stack.4 # show sharing
Load Sharing Monitor
Config    Current Agg     Min    Ld Share  Dist  Ld Share  Agg Link  Link Up
Master    Master  Control Active Algorithm Flags Group     Mbr State Transitions
  1:28   1:28     LACP       1    L3        A     1:28      Y     A       3
  • Now if you configure port 2:25 to become a member port of the above LAG, the following error will be displayed:
Slot-1 Stack.5 # configure sharing 1:28 add ports 2:25
Error: System cannot support Load Sharing among port media types with different maximum speed 
Configuration failed on backup Node, command execution aborted* 

Additional notes
  • There is no workaround to this issue because this is the way EXOS is designed. 
How to create or delete a share group (LAG) in EXOS



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