<div>
Great. &nbsp;that's what I wanted to hear. &nbsp;thank you!
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Great.  that's what I wanted to hear.  thank you!

<div>
Atlas - can I ask one more question? &nbsp;I've noticed on one of my switch stacks (my older Cat 3750) that in spite of all the interfaces being set to MTU 9000, the VLAN is only 1500. &nbsp;I should set the VLAN up to 9000, correct?
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Atlas - can I ask one more question?  I've noticed on one of my switch stacks (my older Cat 3750) that in spite of all the interfaces being set to MTU 9000, the VLAN is only 1500.  I should set the VLAN up to 9000, correct?

<div>
Yes, otherwise you will drop frames in traversal
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Yes, otherwise you will drop frames in traversal

<div>
ok. &nbsp;is the command to do that as follows?<br />
<br />
switchport mode access<br />
switchport access vlan mtu 9000?
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ok.  is the command to do that as follows?

switchport mode access
switchport access vlan mtu 9000?

<div>
To set:<br />
<br />

<pre><code id="code-20-42384679-1">3750(config)# system mtu jumbo 9000
3750(config)# exit
3750# reload</code></pre>
<br />
To confirm:<br />
<br />

<pre><code id="code-20-42384679-2">Switch# show system mtu
System MTU size is 1546 bytes
System Jumbo MTU size is 9000 bytes</code></pre>
<br />
Issuing the reload command will reload the switch/stack. &nbsp;The changes will not take affect until after reload. &nbsp;Practice due caution when reloading on production equipment.<br />
<br />
Hope it all helps.
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To set:



3750(config)# system mtu jumbo 9000
3750(config)# exit
3750# reload


To confirm:



Switch# show system mtu
System MTU size is 1546 bytes
System Jumbo MTU size is 9000 bytes


Issuing the reload command will reload the switch/stack.  The changes will not take affect until after reload.  Practice due caution when reloading on production equipment.

Hope it all helps.

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<div class="content wysiwyg-content">
Hello - can a single port be set to jumbo frames on a Catalyst 3850 switch? If not, will setting it globally affect other ports where the client is not capable of Jumbo frames and needs a 1500 MTU?
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</div>


Hello - can a single port be set to jumbo frames on a Catalyst 3850 switch? If not, will setting it globally affect other ports where the client is not capable of Jumbo frames and needs a 1500 MTU?

Jumbo frames on a single port on a Catalyst 3850 switch

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