Fibre Channel (SAN)

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Ste
New Contributor
Posts: 3
Registered: ‎12-09-2009

Add a switch to an existing fabric

Hello all,


actually I've a fabric made up by two switches, A and B. I've to add a third switch, called C. First I've connected one port of C to A and one port of C to B.


Switch A is domain 1, switch B is domain 2. Switch C is domain 1. Of course I see that there's a domain overlap and I've changed domain of switch C to domain 3.

I've restarted switch C. Immediatly after restart switch C, with 'fabricshow' command I see both switch A and B, but after few minutes A and B disapper.


C::admin> fabstatsshow
Description                      Count
-----------------------------------------
Domain ID forcibly changed:          0
E_Port offline transitions:          0
Reconfigurations:                    2
Segmentations due to:
                  Loopback:          0
           Incompatibility:          0
                   Overlap:          0
                    Zoning:          2 <
            E_Port Segment:          0
                 Licensing:          0
           Disabled E_Port:          0
               Platform DB:          0
       Sec Incompatibility:          0
             Sec Violation:          0
                 ECP Error:          0
             Duplicate WWN:          0
  Eport IsolatedAD header conflict:          0




a:admin> fabstatsshow
Description                      Count
-----------------------------------------
Domain ID forcibly changed:          0
E_Port offline transitions:          2 (Last on port 22)
Reconfigurations:                    3
Segmentations due to:
                  Loopback:          0
           Incompatibility:          0
                   Overlap:          1
                    Zoning:          2 <
            E_Port Segment:          0
                 Licensing:          0
           Disabled E_Port:          0
               Platform DB:          0
       Sec Incompatibility:          0
             Sec Violation:          0
                 ECP Error:          0
             Duplicate WWN:          0
  Eport IsolatedAD header conflict:          0



I've also output of fabriclog even it's quite cryptic IMHO. Do you have any hint to solve this trouble?

Thanks

Ste

Contributor
Posts: 53
Registered: ‎06-24-2009

Re: Add a switch to an existing fabric

The output you show indicates the problem is with the zoning. As switch C is new, delete the zoning configuration on that switch then merge the switch into the SAN as you did previously. Switch C will then inherit the zoning already on the SAN (switches A and B).

Ste
New Contributor
Posts: 3
Registered: ‎12-09-2009

Re: Add a switch to an existing fabric

Yep, I've found this issue.. but switch C is new for fabric but is already in use with its own zoning configuration.

I've found on manual that a cfgdisable on switch C will solve the problem, but even if it's not clear I may suppose that actual zoning configuration on switch C will be 'lost' and not merged. Isn't it?

Ste

Super Contributor
Posts: 425
Registered: ‎03-03-2010

Re: Add a switch to an existing fabric

You can not merge a SW like this. Make it a  core /edge toology, decide first which topology you like to have. you need to rezone of the devices , which are on SW c.You need a down time for this.

Remove all the devices from the SW.

check the licenses

switchdisable

cfgdisable

cfgclear

configure, set the fabric.ops parameters as the other sws9DID, ED_TOV,RA_TOV , PID format and sequence level switching)

switchenable

portstatsclear of all the ports

portlogclear

you may reboot the SW.

Set the time also

merge the SW with one ISL at a time.

take a configbackup thorugh configupload.

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