Brocade Silkworm[TM] Switch portPhys State "Mod

Asset ID:	1-72-1008351.1
Update Date:	2012-07-30
Keywords:

Solution Type Problem Resolution Sure

Solution 1008351.1 : Brocade Silkworm[TM] Switch portPhys State "Mod_Val"

Related Items


Brocade 200E Switch

Related Categories


PLA-Support>Sun Systems>DISK>Switch>SN-DK: Brocade Switch
 _Old GCS Categories>Sun Microsystems>Switches>Brocade

PreviouslyPublishedAs
211422

Symptoms
Some ports in a Brocade Silkworm[TM] 200/E Switch showed portPhys State as "Mod_Val".

Fabric OS:  v5.0.1a
:
:
switchshow:
switchName:     swd77
switchType:     34.0
switchState:    Online  
:
:
Area Port Media Speed State
==============================
  0   0   id    N4   Online    F-Port  21:00:00:e0:8b:91:c7:bf
  1   1   id    N4   Online    F-Port  21:00:00:e0:8b:88:9e:80
  2   2   id    N4   Laser_Flt
  3   3   id    N4   Online    F-Port  21:00:00:e0:8b:87:9c:bf
  4   4   id    N2   Online    F-Port  20:04:00:a0:b8:21:11:5c
  5   5   id    N4   Mod_Val   <----------------???
  6   6   id    N4   Mod_Val   <----------------???
  7   7   id    N4   Mod_Val   <----------------???
  8   8   --    N4   No_Module (No POD License) Disabled
:
:
swd77:admin> portshow 7
portName:
portHealth: No License

Authentication: None
portDisableReason: None
portCFlags: 0x1
portFlags: 0x4001        PRESENT U_PORT LED
portType:  11.0
portState: 2    Offline 
portPhys:  10   Mod_Val   <--------------------------????
portScn:   0             
port generation number:    0
portId:    010700
portIfId:    43020007
portWwn:   20:07:00:05:1e:02:c9:dc
portWwn of device(s) connected:
        None
Distance:  normal
portSpeed: N4Gbps

Resolution
"Mod_Val" is not documented to be a valid state in either the Fabric OS online help or Brocade hardware documentations. It was however, mentioned in some Fabric OS release notes where bugs in the firmware left a port in the "Mod_Val" state. Therefore we could assumed that "Mod_Val" is supposed to be an internal port state that was not meant to be presented to the end-user, but occurs when a certain error condition is met.

For troubleshooting purposes, a port state of "Mod_Val" can be indicative of a fault state, but the cause may be hardware or firmware, therefore, normal hardware fault isolation must be performed to rule out component failures.

In the specific case above, the cause was determined to be faulty SFP in all 3 ports (5, 6 and 7) showing "Mod_Val". Replacing all 3 SFP's resolved the problem.

In cases listed in Fabric OS release notes where "Mod_Val" state occurs due to firmware issues, disable/enable the port may resolve the problem.

Additional Information
For further details see:

Case: 10951144
Task: 22030415

Product
Brocade 200E Switch

brocade, silkworm, sw200e, Mod_Val, portPhys
Previously Published As
88124

Change History
Date: 2006-12-24
User Name: 31620
Action: Approved
Comment: Verified Metadata - ok
Verified Keywords - ok
Verified still correct for audience - currently set to contract
Audience left at contract as per FvF at
http://kmo.central/howto/content/voyager-contributor-standards.html
Checked review date - currently set to 2007-12-23

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