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Which device replies when you ping a VIP address

michael.e.reid
Level 1
Level 1

‎07-28-2005 04:23 AM

When you ping a VIP address, is it the CSS that replies or does the CSS forward the ping to one of the servers in the farm ?

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Gilles Dufour
Cisco Employee
Cisco Employee

‎07-28-2005 06:25 AM

Depends what kind of vip.

If this is a L3 vip, it means the server will receive all ip traffic, including icmp.

So, the CSS loadbalances the ping.

If this is L4->L7, the server is expecting tcp or udp traffic, so the CSS does not forward ping messages and responds on behalf of the servers.

Regards,

Gilles.

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