FA from VSP 7254 to ERS 4950 displaying individual ports

[Configterminal]

Hello, I have an ERS 4950 (Ports 1/49-50) connected to a VSP-7254 VOSS Switch (Ports Gig1/17-1/18) using fabric attach.  Everything works fine but I was just wondering if this is correct as on the ERS side when I run "show fa elements" I'm seeing the Unit/Port as MLT1 (which I expect):

ERS:

===============================================================================
UNIT/ MGMT ELEM ASGN
PORT TYPE VLAN STATE SYSTEM ID AUTH AUTH
-------------------------------------------------------------------------------
MLT1 Server 92 T / S 00:10:00:00:6d  NA NA

===============================================================================
Fabric Attach Authentication Detail
===============================================================================
UNIT/ ELEM OPER ASGN OPER
PORT EXPANDED TYPE AUTH STATUS AUTH STATUS
-------------------------------------------------------------------------------
MLT1 Server (NoAuth) successNoAuth successNoAuth

But on the VSP side when I run that command I see the individual ports and not the MLT although it is definitely configured:

VSP:

====================================================================================================
Fabric Attach Discovery Elements
====================================================================================================
MGMT ELEM ASGN
PORT TYPE VLAN STATE SYSTEM ID AUTH AUTH
-----------------------------------------------------------------------------------------------------------
1/17 proxyNoAuth 92 T / S 00:20:00:00:01 NA NA
1/18 proxyNoAuth 92 T / S 00:20:00:00:01 NA NA

MLTID NAME CREATED PORT MEMBERS PORT MEMBERS IN DATA PATH
-----------------------------------------------------------------------------------------------------------
109 MLT9 LOCAL 1/17-1/18 LOCAL

Is this expected?

[TQU · Accepted solution]

Hi ConfigTerminal, 

Yes, it sound normal. 

You should also check the FA interfaces ("show fa interfaces") on the VSP side. It should display the MLT109 as FA interface. 

Regards, 

 TQU

[Configterminal]

So it does i fact display MLT109 rather than the individual ports.  I just found it strange it displays differently between ERS and VSP but I guess different code bases.  As long as it's expected thats fine.

Thanks