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Cisco Catalyst 9300 Switch Stackwise

Hello Legends,

As we already know that the maximum numbers of switches that can be stacked is 8 and the switch with priority 15 will be elected as Master and rest other members. I am just confused if only 8 switches can be stacked why the Priority number is from 1 to 15 it can be from 1 to 8, any reason behind that.

 

BR

4 Replies 4

Probably a setting that has just persisted. not sure if there has ever been a model to stack 15 total, but I know the 3750s could stack 9 and had the same 1-15 priorities.

Correct about the 3750 series.

My guess would not be so much "persist" but to allow up 16 units.

BTW, some of early stack releases didn't initially support the stack limit on the "road map".

M02@rt37
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Hello @Himanshu_Dwivedi,

The priority values for stacking switches, typically ranging from 1 to 15, are designed to provide flexibility and accommodate various scenarios in network configurations. While the maximum number of switches in a stack is often limited to 8 in many Cisco switch models, the priority values ranging from 1 to 15 offer more versatility in how you can set up your stack.

The priority range is designed to be consistent across various switch models, some of which might support larger stack sizes. By keeping the range from 1 to 15, Cisco can ensure that these values remain consistent regardless of the specific switch model, making it easier for network administrators to configure and manage stacks with different models.

In some cases, you might have multiple stacks of switches, and you may want to establish a hierarchy among these stacks. Priority values ranging up to 15 allow you to do this. For example, you could have two stacks, one with priority 15 and another with priority 10, to indicate that one is the master stack of the other.

Furthermore, the priority values help determine the master switch in the stack. Redundancy and failover are crucial in network setups, and having a broader range of priority values allows for more flexibility in configuring and ensuring redundancy.

Note that in some scenarios, you might want to have multiple stacks of switches in the same network. The priority values ranging from 1 to 15 can be useful in distinguishing between these stacks, even if they are all limited to 8 switches.

 

Best regards
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Leo Laohoo
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@Himanshu_Dwivedi wrote:
the maximum numbers of switches that can be stacked is 8

Officially, 8 is the limit. 

Unofficially, 9300 can support up to 16 stack members. 

 

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