Conference netcad::hub_mgnt

3618.0. "Add 5 PEswitch 900tx breaks cluster on fddi ring" by KAOT01::WATTERS () Wed Jun 12 1996 18:35

Customer has problems when adding peswitch PEswitch900tx to DEChub 900ms.

DEChub900MS has; 
4 PESwitch 900tx 
1 DECbridge 900MX 
3 pwr supplies.
* - All 4 PEswitch go to 900mx and then onto Gigaswitch.

Once a 5th PEswitch is added to fddi ring(LAN interconnect), cluster nodes 
complain w/ 'opa0: closing virtual circuit....'. Then they go in Cluster state 
transition and all is ok...for a while. During a day, the errors and state 
transition can happen once or 2x a day.

900 MS; v4.1.0
Hubwatch: v4.1.1 
AUTOHEALING; disable
DECbridge 900mx; v1.5.2

I've asked him to upgrade the 900MS to v4.1.1 but really, I'm grasping here.

So....Is there some kind of limitation w/ any modules in this configuration?


Any help would be greatly appreciated.

    
    
         Please provide us some more details. Are you using any backplane
    Ethernets? Give us the exact slot location of each module. You will
    need 8 backplane channels to interconnect the modules. If you have 6
    Ethernets that means a total of 14 channels. Depending on module
    location you may have run out of channels. Check the Message View box
    for any messages about being out of resources. One of the older MAM
    firmware versions (I can't remember which one now) would give some
    less than optimal results if it was out of channels.
    

    
         Actually now that my mind has engaged based on the fact that you
    are adding a 6th FDDI module you really need 10 channels for the FDDI
    which makes the probability of running out of channels even higher.