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wicksee
Beginner

MDS 9250 and FCIP - incorrect swwn reported

Hi,

I am trying to replace our ageing 9222is with 9250s in a FICON/FCIP setup.

The 9222s talk to each other ok and the 9250s (in a test environment) can talk to each other ok.

 

The problem occurs when i swap out a 9222 with a 9250 (i can't do both ends at the same time as they're hundreds of miles apart!).

I change the fabric-binding database on the 9222 to give it the swwn of the 9250:

 

no ficon vsan 201
no fabric-binding activate vsan 201
no fabric-binding database vsan 201
fabric-binding database vsan 201
  swwn 20:00:xx:xx:xx:xx:b9:70 domain 51  ! 9250
  swwn 20:00:xx:xx:xx:xx:29:40 domain 49  ! 9222
no fabric-binding activate vsan 201
ficon vsan 201

 

I then get this error from the 9222:

9222#
%PORT-SECURITY-3-BINDING_VIOLATION: %$VSAN 201: 2021 Thu Nov 25 13:53:01.72803%$ <Fabric Binding:: sWWN: 20:01:xx:xx:xx:xx:b9:71>

 

Note that the swwn reported in the violation has 2 digits that are different from the swwn of the 9250:

9250# show wwn switch
Switch WWN is 20:00:xx:xx:xx:xx:b9:70

 

So the 9250 presents itself to the 9222 as 20:01:xx:xx:xx:xx:b9:71, rather than its actual swwn which is 20:00:xx:xx:xx:xx:b9:70.

When this 9250 talks to the other 9250 (in the test environment) it presents itself correctly as 20:00:xx:xx:xx:xx:b9:70 (which matches its true swwn).

 

Why, when talking to the 9222, does it seemingly report a different swwn?

 

I did try to change the fabric-binding database on each end to match the swwn reported in the violation message:

no ficon vsan 201
no fabric-binding activate vsan 201
no fabric-binding database vsan 201
fabric-binding database vsan 201
  swwn 20:01:xx:xx:xx:b9:71 domain 51  ! 9250
  swwn 20:00:xx:xx:xx:29:40 domain 49  ! 9222
no fabric-binding activate vsan 201
ficon vsan 201

 

However the 9250 didn't like this:

9250(config)# fabric-binding database vsan 201
9250(config-fabric-binding)# swwn 20:01:xx:xx:xx:xx:b9:71 domain 51
Error: Local Switch WWN not paired with local domain

 

So in summary:

  1. i can only input the correct swwn into the fabric-binding database of the 9250.
  2. the 9250 reports the correct swwn to the second 9250.
  3. the 9250 reports a different swwn to the 9222.

 

What gives, please? Any advice? Am i doing something wrong?

 

1 REPLY 1
wicksee
Beginner

I have not been able to resolve this issue.

Connecting a 9250 to a 9222 seems to be impossible; the 9250 reports an incorrect swwn to the 9222.

I have had to work around this issue by replacing both ends simultaneously, i.e. replace both 9222s with 9250s at the same time.

This is difficult when the devices are hundreds of miles apart....