Switching

Greetings--

On all of my ex4300's this is the default class-of-service forwarding class set:

test@switch1> show configuration class-of-service |display inheritance    

{master:0}
test@switch1 > show class-of-service forwarding-class                      
Forwarding class                       ID      Queue  Restricted queue  Fabric priority  Policing priority   SPU priority
  best-effort                           0       0          0             low                normal            low    
  expedited-forwarding                  1       1          1             low                normal            low    
  assured-forwarding                    2       2          2             low                normal            low    
  network-control                       3       3          3             low                normal            low    
  mcast-be                              8       8          8             low                normal            low    
  mcast-ef                              9       9          9             low                normal            low    
  mcast-af                             10      10         10             low                normal            low    
  mcast-nc                             11      11         11             low                normal            low     

However on one specific ex4300 I have this default set

test@switch2> show configuration class-of-service |display inheritance   

{master:0}
test@switch2> show class-of-service forwarding-class                     
Forwarding class                       ID      Queue  Restricted queue  Fabric priority  Policing priority   SPU priority
  best-effort                           0       0          0             low                normal            low    
  fcoe                                  1       3          3             low                normal            low    
  no-loss                               2       4          4             low                normal            low    
  network-control                       3       7          7             low                normal            low    
  mcast                                 8       8          0             low                normal            low    

Has this been changed with some sort of operational command? Based on the fcoe class it looks like its expecting to be operating in some sort of fabric mode.

The issue is that my standard qos template does not work on this one unit as it references the default mcast-be forwarding class.

--Paul

And the answer is mixed-mode VC vs non. In a mixed-mode VC the default forwarding class set is the five classes as seen in switch2 above, with a regular VC having eight.

This is odd behavior given that a mixed-mode VC will drop features down to the lowest common member capability--which the EX4300 already is.

Mixed-mode:

test@switch> show virtual-chassis status
 
Virtual Chassis ID: xxxxxxxxxxxx
Virtual Chassis Mode: Mixed
Mstr           Mixed Route Neighbor List
Member ID  Status   Serial No    Model          prio  Role      Mode Mode ID  Interface
0 (FPC 0)  Prsnt    xxxxxxxxxxxx ex4300-48p     128   Master*      Y  VC
 
Member ID for next new member: 1 (FPC 1)
 
{master:0}
test@switch> show class-of-service forwarding-class
Forwarding class                       ID      Queue  Restricted queue Fabric priority  Policing priority   SPU priority
best-effort                           0       0          0 low                normal            low
fcoe                                  1       3          3 low                normal            low
no-loss                               2       4          4 low                normal            low
network-control                       3       7          7 low                normal            low
mcast                                 8       8          0 low                normal            low

 Non Mixed-Mode:

test@switch> show virtual-chassis status
 
Virtual Chassis ID: xxxxxxxxxxxx
Virtual Chassis Mode: Enabled
Mstr           Mixed Route Neighbor List
Member ID  Status   Serial No    Model          prio  Role      Mode Mode ID  Interface
0 (FPC 0)  Prsnt    xxxxxxxxxxxx ex4300-48p     128   Master*      N  VC
 
Member ID for next new member: 1 (FPC 1)
 
test@switch> show class-of-service forwarding-class
Forwarding class                       ID      Queue  Restricted queue Fabric priority  Policing priority   SPU priority
best-effort                           0       0          0 low                normal            low
expedited-forwarding                  1       1          1 low                normal            low
assured-forwarding                    2       2          2 low                normal            low
network-control                       3       3          3 low                normal            low
mcast-be                              8       8          8 low                normal            low
mcast-ef                              9       9          9 low                normal            low
mcast-af                             10      10         10 low                normal            low
mcast-nc                             11      11         11 low                normal            low