Users Guide

Command Mode EXEC
Usage
Information
Triggers the load-balancing mechanism to redistribute the sessions across the FC uplinks. The dry-run
option displays the current state of the system, sessions that would be cleared, and the system state
after the load balancing is done without actually doing it. You can use the brief option (both in dry run
and actual run) to view only the session redistribution information. You can use the fcoe delay fcf-
adv configuration command to load balance the system during a switch reload. If the system is
unbalanced after the reload and after configuring the fcoe delay fcf-adv command, then use the
rebalance command to balance the sessions. This command is supported in the NPG mode.
NOTE: Dell Technologies recommends that you do not use this command in an NPG cascading
topology.
The fields and their corresponding descriptions that are displayed in this command are as follows:
● Uplink Intf—The name of the FC uplink interface.
● FLOGI—Number of Fabric Login Sessions in the FC uplink interface.
● FDISC—Number of Fabric Discovery Sessions in the FC uplink interface.
● Load—Total number of sessions (FLOGI and FDISC) in the FC uplink interface.
● Speed—Link speed of the FC uplink interface.
● Excess Load—Excess load is the absolute (Current load on the link - ((Minimum load per 8G speed in
current state) * port-speed/8G)). It captures the level to which the corresponding link is
oversubscribed when compared to other FC upstream links in the system.
● Node WWPN—World-Wide Port Name, which is used for the Fabric Login request of the Server that
is connected to the OS10 switch. It can be an FCoE server or an FC server.
●
From Uplink Intf—Interface name of the FC uplink from which the sessions from the server are
redistributed.
● To Uplink Intf—Interface name of the FC uplink to which the sessions are mapped when the server
logs back in.
● No. of sessions—Count of redistributed sessions.
Example
OS10#re-balance npg sessions vfabric 100 dry-run
Fabric Id 100 Current State
Uplink FLOGI FDISC Load Speed Excess
Intf (Gbps) Load
----------------------------------------------------------------
Fc 1/1/1 1 9 10 8 7
Fc 1/1/2 3 3 6 16 0
----------------------------------------------------------------
4 12 16 24 7
----------------------------------------------------------------
Session Re-distributions:
16 Session Re-distribution(s)
-------------------------------------------------------------------------
Node WWPN From Uplink Intf To Uplink Intf No.of sessions
-------------------------------------------------------------------------
20:01:d4:ae:52:1a:ee:54 Fc 1/1/1 Fc 1/1/2 10
21:01:d4:ae:52:1a:ee:54 Fc 1/1/2 Fc 1/1/1 2
22:01:d4:ae:52:1a:ee:54 Fc 1/1/2 Fc 1/1/1 2
23:01:d4:ae:52:1a:ee:54 Fc 1/1/2 Fc 1/1/1 2
Fabric Id 100 State after Re-balancing
Uplink FLOGI FDISC Load Speed Excess
Intf (Gbps) Load
-------------------------------------------------------------------
Fc 1/1/1 3 3 6 8 1
Fc 1/1/2 1 9 10 16 0
-------------------------------------------------------------------
4 12 16 24 1
-------------------------------------------------------------------
OS10#re-balance npg sessions vfabric 100 dry-run brief
Fabric Id 100 Session Re-distributions:
514
Fibre Channel