I doubt it's related to a problem with the NIC. If there were a problem
with the NIC, it would probably be unable to respond at all or to send the
source quench.
The server is just telling you that it doesn't have buffers or other
resources to handle the ping. When you ping from the Unix machine, what is
the timeout? Does the Unix machine send less often than the router,
resulting in the server not getting overwhelmed?
What else is the server doing? I have seen Mac OS send source quench when
pinged. I have never considered it a problem. The Mac is OK in every other
respect.
I'm glad this topic came up again because I had previously said that source
quench was obsolsete per RFC 1812. RFC 1812 is Requirements for IPv4
Routers. A router should not send a source quench.
But a host may send a source quench. Per RFC 1122, Requirements for IP
Hosts, "a host may send a source quench message if it is approaching, or
has reached, the point at which it is forced to discard incoming datagrams
due to a shortage of reassembly buffers or other resources."
Even though RFC 1122 is old, it has not been replaced as far as I can tell.
So, source quench is not obsolete for hosts.
Priscilla
At 10:29 AM 7/16/01, Amit Gupta wrote:
>Hi All,
>
>I am getting a " Source Quench message " from one of
>my HP-UX Servers when I try to ping it from an NT
>machine / Switch
>
>I am getting the following msg when I ping the server
>from the external router
>Sending 5, 100-byte ICMP Echos to x.x.x.x timeout is 2
>seconds:
>QQQQQ
>
>However if I ping the same server from a Unix machine
>/ server, it is ok.
>
>Could it be a problem with the server NIC....
>
>Thanks & Regards
>
>Amit
>
>
>
>
>
>
>
>__________________________________________________
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Priscilla Oppenheimer
http://www.priscilla.com
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=12510&t=12477
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