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RE: (ASCEND) Overloading of MAX ethernet ports?

Hi Neale

>
> Hi Adam,
>
> Not sure that I'm fully with you here...
>
> Are we concluding that the problem was related to the MAX1800 being set
> as the default gateway for some/most/all systems on the local ethernet?
> And that the resultant number of ICMPs (small packets, so low volume?) was
> just too much for the MAX1800?
>
> With the default routes removed, are you reducing ICMPs from local
> ethernet servers to the MAX1800?  If so, where do they go now?
>

Our perception (and Ascend agrees with us to some extent here) that .... 
diagram time :-)


+------+
| 1800 | -------- 6 or so ISDN links
+------+
   |
   |
 *---------------------------------------------*
            |                   |
         +------+           +-------+
         | Unix |           | T.Serv|
         |router|           |       |
         +------+           +-------+
         /   |    \
    to 5 other segments


Ok - t.serv had default of the Unix router - for management purposes, this was  
 done. They were however on the same segment.

Now, what we saw was that packets were going to the unix router from t.serv, 
then onto the 1800 - the 1800 was saying (by arp/mac resolution), hang on, its 
quicker to go direct. So in effect data was redirecting but not being learnt by 
the T.serv to send back direct - with me ? Hard to explain via email.

By turning on RIP which was learning the routes better, data was flowing 
better.
Mind you , just looking at the unit now, its gone back to bad again. comes and 
goes really.

I think all the ICMP re-directs were causing the max or are causing the max to 
be unhappy and slogs its ethernet port.

We're replacing the ethernet card just in case.

Does this help ?

Adam



--------------------------------------------------
                  IPAX Systems
              Melbourne, Australia
            National Systems Manager
            Ops Tel:   1800 894 894
            Ops Fax:  03 - 9801-8533
        Web Site http://www.ipax.com.au
--------------------------------------------------

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