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Here is the situation : I have an HP server with 2 network interfaces linked to a Cisco switch. I want to configure the switch to accept the NIC teaming of the server. I have always believed that the "trunk" mode is to carry vlans from a switch to another one (or router). But I saw some configurations of ports linked to server with active LACP (or etherchannel) and in trunk mode.

So my question is: what is the difference (port of server) between switchport mode acces vlan 1, 2, 3 and switchport trunk allowed vlan 1, 2, 3?

Thanks in advance !

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    – Ron Maupin ♦
    Feb 19, 2018 at 20:07

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There's no such thing as "switchport mode acces vlan 1, 2, 3"

A switchport in access mode will be associated with a unique VLAN and the packet leaving the port will be untagged. (Well, if you use a voice VLAN you will actually have 2 VLAN, one tagged and the other untagged)

In trunk mode it can carry as many VLAN as you want, and all packet will be tagged with the appropriate VLAN tag, except optionally for a VLAN marked as native.

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  • So, for the ports connected to my server, they need to be configured in trunk mode if i want the server in several VLAN ?
    – Ciscow
    Nov 13, 2017 at 9:44
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    yes but this requires that you server be configured accordingly
    – JFL
    Nov 13, 2017 at 10:17

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