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For questions about stacking of network devices. For instance, you are stacking a new set of switches or firewalls, where you need help with configurations or are troubleshooting a problem.

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You should set the switch number and priority before adding it to the stack. You should also define the new switch on the stack before adding it to the stack, and you should verify that it is running …
answered Jul 4 '16 by Ron Maupin
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You should always set the switch number and priority of each switch prior to creating or adding to the stack. The switch that you want to be the master should be set to the highest priority among the …
answered Jun 2 '17 by Ron Maupin
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This has nothing to do with physically stacking switches (other than the fact that stack cables are short, so you probably need to physically stack stacked switches). …
answered Jul 19 '19 by Ron Maupin
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If the switch is truly frozen, you will probably have to power it off and back on. When the master thinks the switch is only provisioned, that means that it is provisioned in the configuration, but i …
answered Jul 5 '16 by Ron Maupin
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You will either need to shutdown the current master, or you will need to restart the stack. Once the stack is up and running, there is no election unless the current master stops. You should schedule …
answered Jan 25 '18 by Ron Maupin
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The one thing to consider when stacking more than five switches is the size of the network address range When you have five 48-port switches, that is 240 ports in a stack, and that fits well for a /24 …
answered Jul 29 '19 by Ron Maupin
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The order in which the switches are physically connected does not matter to the configured switch number. The switches are connected in a loop, so there is really no top or bottom, even if there is a …
answered Mar 1 '19 by Ron Maupin
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Is switch stacking bad for redundancy? No. Having a stack of switches can enhance redundancy because you can have multiple uplinks on different physical switches. … Stacking actually has a backup supervisor on each physical switch. …
answered Dec 3 '19 by Ron Maupin
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That is not actual stacking, where multiple switches look like a single switch for management and configurations. …
answered Dec 18 '20 by Ron Maupin
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You should really set the IOS version to be the same before adding a switch to the stack. Basically, the switches need to have the same stack protocol version, and only switches with the same IOS vers …
answered Jul 6 '16 by Ron Maupin
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If you are reloading, you want to replace the startup configuration, not the running configuration. Otherwise, the device will start up with the old startup configuration, which is stored on nvram:. …
answered May 17 '17 by Ron Maupin
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You have not given us the switch model, but you tagged your question with the Cisco Catalyst tag, so I will use the Cisco Catalyst 3850 as an example. The Cisco Catalyst 3850 has a pretty large stack …
answered Apr 4 '18 by Ron Maupin
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HSRP would be configured on the ISP side, not your side. The switch will look and be configured like a single switch. You will use the no switchport command on the two interfaces to the ISP. Each in …
answered Nov 24 '15 by Ron Maupin
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You need a cable for each switch, even with two switches. You create a loop, and if anything breaks the loop (down switch loose/bad, bad cable, bad interface, etc.), then you still have a stack, not …
answered Feb 22 '18 by Ron Maupin
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What you are running into isn't a trunking problem. This behavior is what STP does in order to prevent loops. STP will create a loop-free layer-2 by sending BPDUs to determine the possible paths to th …
answered Mar 12 '16 by Ron Maupin

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