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SubjectRe: Too Much ARP-ing
On Mon, 27 Jan 1997, A.N.Kuznetsov wrote:

> In article <199701270218.VAA09752@delta.CES.CWRU.Edu> you wrote:
>
> : This is a typical scenario from tcpdump -p (my machine is jeff):
> : 15:30:37.455806 arp who-has hunny.INS.CWRU.Edu tell ins02055.INS.CWRU.Edu
> : 15:30:37.455806 arp who-has ins02055.INS.CWRU.Edu tell jeff.krafty.com
> : 16:27:55.025806 arp who-has hunny.INS.CWRU.Edu tell b64471.STUDENT.CWRU.Edu
> : 16:27:55.025806 arp who-has b64471.STUDENT.CWRU.Edu tell jeff.krafty.com
> : 16:27:55.325806 arp who-has rabbit.INS.CWRU.Edu tell b62701.STUDENT.CWRU.Edu
> : 16:27:55.325806 arp who-has b62701.STUDENT.CWRU.Edu tell jeff.krafty.com
>
> : Is this behavior normal?
>
> It depends on your setup.
>
> Do you use net aliases on this ethernet? If you do you will have to suffer.
> net_aliases are broken in 2.0.
>
> If you do not, please send me more detailed configuration of your host
> (ifconfig, cat /proc/net/arp, cat /proc/net/route, cat /proc/net/rt_cache).
>
> Alexey Kuznetsov.
>
How much data is supposed to be in /proc/net/rt_cache ???? Once my machine
has been up for about 24 hours:

# cat /proc/net/rt_cache >/tmp/xxx.xxx
# ls -la /tmp/xxx.xxx
-rw-r--r-- 1 root root 9123680 Jan 27 13:22 /tmp/xxx.xxx

This is a very large file, containing mostly the same entires repeated!
Aren't these supposed to expire or go away? Eventually, there is no more
room (somewhere) and it is not possible to log in over the network.


Cheers,
Dick Johnson
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Richard B. Johnson
Project Engineer
Analogic Corporation
Voice : (508) 977-3000 ext. 3754
Fax : (508) 532-6097
Modem : (508) 977-6870
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Email : rjohnson@analogic.com, johnson@analogic.com
Penguin : Linux version 2.1.21 on an i586 machine (66.15 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.
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