Interface Line protocol status always up problem

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Roopaksethi2005
Posts: 2
Joined: Sat May 13, 2017 9:12 am

Interface Line protocol status always up problem

Post by Roopaksethi2005 » Sat May 13, 2017 9:17 am

Hello,

I am getting line protocol problem with all type of images like iol/iou (l2 and l3), iosv etc. line protocol of the interface always stays up even if at another side port/interface is made shut down. One more thing i want to highlight is that even if the interface (any other unused port) is not connected to any switch. The interface line protocol always stays up.

Please help to resolve the issue.

ecze
Posts: 534
Joined: Wed Mar 15, 2017 1:54 pm

Re: Interface Line protocol status always up problem

Post by ecze » Sat May 13, 2017 11:58 am

In a virtual environment, hardware link status is not possible.
So of course line protocol stay up... It is not a bug. You cannot simulate hardware electric signalling...

Virtualization means simulate OSI model L2 -> L7 , layer 1 is not in the scope...

E.

neuralping
Posts: 2
Joined: Sun Feb 25, 2018 12:01 am

Re: Interface Line protocol status always up problem

Post by neuralping » Sun Feb 25, 2018 12:26 am

Packet tracer does not have this issue. When you break your labs to see what happens you expect the L2 interface protocol status to be down when you unplug a cable or shutdown the neighbor interface.

Uldis (UD)
Posts: 5180
Joined: Wed Mar 15, 2017 4:44 pm
Location: London
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Re: Interface Line protocol status always up problem

Post by Uldis (UD) » Sun Feb 25, 2018 2:00 am

dont mess packet tracer with emulation, packet tracer is program where is no one real image loaded. PT is simple simulator for ICND studies.
real images like vIOS, CSRv1000, IOL no one have L1. NO ONE.

PT is nothing else like simple exe algorithm...

EVE running real images such as those are provided from vendors...

UD

neuralping
Posts: 2
Joined: Sun Feb 25, 2018 12:01 am

Re: Interface Line protocol status always up problem

Post by neuralping » Sun Feb 25, 2018 7:01 pm

Make sense. Got it.

Thanks

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