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ICMP messages and LVS

 

 

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joern.maier at informatik

Dec 13, 2000, 2:55 AM

Post #1 of 2 (140 views)
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ICMP messages and LVS

Hi everybody,

is there anybody who can tell me, what happens with ICMP messages
specified for a Realserver. Or more exactly what happens if for example
an ICMP host unreachable messages is send to the LVS because a client
got down ?
Are the entrys from the connection table removed ?
Are the messages forwarded to the Realservers ?

cheers,
Joern


ja at ssi

Dec 13, 2000, 3:02 PM

Post #2 of 2 (138 views)
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Re: ICMP messages and LVS [In reply to]

Hello,

On Wed, 13 Dec 2000, joern maier wrote:

> Hi everybody,
>
> is there anybody who can tell me, what happens with ICMP messages
> specified for a Realserver. Or more exactly what happens if for example
> an ICMP host unreachable messages is send to the LVS because a client
> got down ?
> Are the entrys from the connection table removed ?

No

> Are the messages forwarded to the Realservers ?

Yes, the embedded TCP or UDP datagram is inspected and
this information is used to forward the ICMP message to the right
real server. All other messages that are not related to existing
connections are accepted locally.

> cheers,
> Joern


Regards

--
Julian Anastasov <ja [at] ssi>

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