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Unable to create sub-interface on 3750E

craig.hammer
Level 1
Level 1

‎12-06-2007 11:19 AM - edited ‎03-05-2019 07:51 PM

I am unable to create sub-interfaces on a 3750E running 12.2(35)SE2 (on a gig ethernet interface). Has anyone succesfully done so?

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glen.grant
VIP Alumni
VIP Alumni

‎12-06-2007 12:04 PM

Can you elaborate why you are trying to create a sub interface ?

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craig.hammer
Level 1
Level 1
In response to glen.grant

‎12-06-2007 12:06 PM

I am attempting to mimic a setup currently in use on a 6500.

We have a gig interface connected to a MAN, with multiple endpoints. The subinterfaces are used to encapsulate using 802.1q.

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Edison Ortiz
Hall of Fame
Hall of Fame

‎12-06-2007 12:05 PM

Why would you need to create subinterfaces in a switch ?

You should create SVIs (Switch Virtual Interfaces) instead.

interface vlan x

ip address x.x.x.x y.y.y.y

If you want to carry more than one Vlan over that link, configure the switchport as trunk.

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