11-04-2016 02:58 AM - last edited on 11-10-2016 12:30 AM by Antonio Bongiorno TechHelp24
we have two 6510 SAN Multiprotocol routers connected via a DWDM equipment and on both systems there are 2 ports in a trunk.
When I look at the port performance one trunk port has about 95 % of the traffic and the other just 5.
There is no "shortest IFL feature" enabled.
mprwi1:root> fcrconfigure --show
Backbone fabric ID: 122
Shortest IFL feature is disabled.
No fabric id alias configured.
So why there is no load balancing between thes two ports ?
We don't use any "fcrrouterportcost" configuration so we expect the defaults being used.
11-08-2016 01:58 AM
if the two IFLs are trunked together (islshow displays them as one link), then it is using the same trunking algorithm as for ISLs. Which means that the one member of the trunk is used to transmitt frames (data), and if the trunk needs to transmitt out more frames at the same time or shortly, so the first trunk is "busy", then the next member of the trunk is used. So, you will see one link more utilitied than the other, and that is normal.
11-09-2016 08:37 PM
-->>we have two 6910 SAN Multiprotocol routers....
did you mean perhaps Brocade 6510 with IR License = ( Integrated Routing ) or Brocade 78xx Platforms Series ?
there is no Brocade "6910" Multiprotocol Router
11-09-2016 11:52 PM
ok, I mistyped the numerbs . We have 2 6510 boxes.
Now for me it is clear what is going on in my trunks.
Thx a lot
11-10-2016 12:32 AM
thanks fo clarifying.
to help other user that looking for similar solution and make easy to find, I've edited the Switch name in the Threads.