Limit of routed ports on Catalyst 9200

[gabrieldslacerda]

Hello all. 

I'm trying to figure out the max of ports you can use the command "no switchport" to make it a routed port for the Catalyst 9200 series. On the guides, it just says there's no software limitation of it but that's a very vague statement.

Any idea on that?

[pman]

Hi,

Just to understand,
You ask how many ports can be configure in range with the "no switchport" command?

for example:

int ra gi1/0/1-48

no switchport

If so:

The number of routed ports that you can configure is not limited by software. However, the interrelationship between this number and the number of other features being configured might impact CPU performance because of hardware limitations.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9200/software/release/16-10/configuration_guide/int_hw/b_1610_int_and_hw_9200_cg/configuring_interface_characteristics.html

[gabrieldslacerda]

Indeed. Then you can make all 48 ports routed?

[pman]

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@gabrieldslacerda wrote:

Indeed. Then you can make all 48 ports routed?

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@gabrieldslacerda correct.

[pman]

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@gabrieldslacerda wrote:

Indeed. Then you can make all 48 ports routed?

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[Giuseppe Larosa · Accepted solution]

Hello @gabrieldslacerda ,

each routed port is actually implemented by using an internal VLAN taken on the high part of the range 1-4094.

The routed port is actually emulated using an SVI on the internal VLAN allocated associating the physical port to the internal VLAN and adding all the commands needed to disable Spanning-tree.

So if your Cat 9200 supports up to 1000 VLAN (to make an example)  and you have 48 ports you can have 48 routed ports using 48 different internal VLANs

Hope to help

Giuseppe

[gabrieldslacerda]

Thanks, that's clear.