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Avatar of Jess Lelystad
Jess Lelystad

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Etherchannel

netdiagram.docx

I don't have any experience with etherchannels but want to configure an etherchannel from L2 switchs to an L3 switch. The L3 switch is routing between two different VLANS. In order to do this would I need to set the virtual port to L2 or L3? (switchport or no switchport, assign an IP to the port on the L3 switch and no IP on the L2 port etc?)

Thanks for the help!
Jess
Avatar of Predrag Jovic
Predrag Jovic
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This should be enough for etherchannel trunk (interfaces Gi0/x & Gi0/y are ports bundled in etherchannel):

L2 switch
interface range Gi0/x, Gi0/y
 shut
 channel-group 1 mode active
 no shut

interface Po1
 switchport mode trunk

Open in new window


L3 switch (on some L3 switches routed interface is default, so switchport command may be needed)):
interface range Gi0/x, Gi0/y
 shut
 switchport
 channel-group 1 mode passive
 no shut

interface Po1
 swithport mode trunk

Open in new window

Check state with:
show etherchannel summary
show etherchannel details
following
The L3 switch is routing between two different VLANS. In order to do this would I need to set the virtual port to L2 or L3?

In this environment, I would go with a trunked L2 interface.
Avatar of Jess Lelystad
Jess Lelystad

ASKER

Thank you for the help!!
One more question about the current configuration. If I have the L3 switch sitting between the L2 switches, connected by etherchannel, to enable routing between the VLANS do I still configure an SVI with an IP on the interfaces? If so would that be applied on the logical port I created for the etherchannel bundles?
Thanks again for the help!
If I have the L3 switch sitting between the L2 switches, connected by etherchannel, to enable routing between the VLANS do I still configure an SVI with an IP on the interfaces?
Assuming that the link from the L3 switch to the L2 switch is an trunked etherchannel, then yes.  You would create an SVI on the L3 swtich for each VLAN you want to route between.
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