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Why a "Keepalive 2" statement under Interface FA0/23 ?

I have looked and cannot find a reason for the "Keepalive 2" statement in a 2950 switch.. TIA

1 ACCEPTED SOLUTION

Accepted Solutions
Purple

Re: Why a "Keepalive 2" statement under Interface FA0/23 ?

Hi,

By default, I believe keepalives are not sent out of the interface. Setting 'keepalive 2' will sent out a keealive message every 2 seconds.

Paresh

3 REPLIES
Purple

Re: Why a "Keepalive 2" statement under Interface FA0/23 ?

Hi,

By default, I believe keepalives are not sent out of the interface. Setting 'keepalive 2' will sent out a keealive message every 2 seconds.

Paresh

New Member

Re: Why a "Keepalive 2" statement under Interface FA0/23 ?

thank you Paresh!

I know this about keepalives, but do not know why it applies here...

I understand to use (as an option) to set keepalives on WAN interfaces, but do not know about Fast Ethernet.. is it VoIP related?? thanks

Robbie

Cisco Employee

Re: Why a "Keepalive 2" statement under Interface FA0/23 ?

Hi Robbie,

The keepalive packets are part of a loopback detection mechanism. If a port receives a keepalive that it had sent, then the switch will disable the port to prevent a layer 2 loop.

HTH,

Bobby

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