Dell Force10 MXL Manual 

Also see for Force10 MXL 10 GbE: Manual Getting started guide Deployment guide

Contents

Dell Force10 MXL Manual  Manual pdf 22 page image

Stacking Dell Force10 MXL 10/40G Switches20Un-stacking (removing member units)Minimizing traffic flow interruptions is always the primary goal when removing member units from astack. Four possible scenarios pertaining to unstacking or removing a member unit are:1. Intentionally reducing the size of a ring topology stack2. Intentionally reducing the size of a daisy-chain topology stack3. Removing or replacing a failed member unit on a ring topology stack4. Removing or replacing a failed member unit on a daisy-chain topology stackRemoving a unit from a ring topology is easy because of the built-in redundancy of the stack.Eliminating links (intentionally or from failure) between any two members simply turns the ringtopology into a daisy-chain topology, allowing all traffic to continue through the stack. After physicallyremoving a stack member, simply connect the two sets of stack ports on the two switches that werepreviously attached to the switch that was removed. The stack will resync while regaining a resilientring topology.On a daisy-chain topology stack, after physically removing an end member unit (one that is onlyconnected to one other member), there is nothing else to do. However, when removing a member unitfrom the middle of a daisy-chain stack, there are a few additional steps required to prevent a splitstack. A split stack occurs on a daisy-chain topology when any link (or switch) in the middle of thestack fails or is removed. The side of the split that has the Master will remain intact, while the side ofthe split with no Master will detect its Master is lost and therefore re-elects a new Master. When thisoccurs it leaves two stacks. Both stacks now share the same IP address which will cause problems if onthe same network. To prevent stack split issues on the network, disconnect one of the stacks from thenetwork and reconfigure the stack to a new IP address using the Master console port.To remove stacking configurations and return to individual switches, unplug the stacking cables goingto the switch(es) that are to be unstacked. From the console prompt of a switch that has beenunplugged, run all or a subset of the following commands in config mode. Use the chart in Figure 3 onpage 7 to find the stack-group that correlates with each port:FTOS(conf)#no stack-unit 0 stack-group 0FTOS(conf)#no stack-unit 0 stack-group 1FTOS(conf)#no stack-unit 0 stack-group 2FTOS(conf)#no stack-unit 0 stack-group 3FTOS(conf)#no stack-unit 1 stack-group 0FTOS(conf)#no stack-unit 1 stack-group 1FTOS(conf)#no stack-unit 1 stack-group 2FTOS(conf)#no stack-unit 1 stack-group 3FTOS(conf)#no stack-unit 2 stack-group 0FTOS(conf)#no stack-unit 2 stack-group 1FTOS(conf)#no stack-unit 2 stack-group 2FTOS(conf)#no stack-unit 2 stack-group 3::FTOS(conf)#no stack-unit 5 stack-group 2FTOS(conf)#no stack-unit 5 stack-group 3FTOS(conf)#exitSave the configuration and reload.FTOS#copy running-config startup-configFile with same name already exist.