[CentOS] so many arp caches why?

Thu Aug 6 17:41:21 UTC 2009
MontyRee <chulmin2 at hotmail.com>

 
Hello, all.
 
 
When I execute arp -a -n, there are lots of arp caches like below.
Surely, I set netmask and Broadcast without problem and routing table also no problem.
 
System is CentOS release 4.7 i386.
 
I know how to delete the arp cache, 
but I don't know why ..
 
 
#  ifconfig
eth0      Link encap:Ethernet  HWaddr 00:A0:D1:E7:91:CC
          inet addr:192.168.195.36  Bcast:192.168.195.63  Mask:255.255.255.192

# route -n 
192.168.195.0    0.0.0.0          255.255.255.192 U     0      0        0 eth0
0.0.0.0          192.168.195.36   0.0.0.0         UG    0      0        0 eth0

 
# arp -a -n 

? (120.88.46.10) at 00:23:5E:12:63:FE [ether] on eth0
? (208.80.195.54) at 00:23:5E:12:63:FE [ether] on eth0
? (125.122.171.33) at 00:23:5E:12:63:FE [ether] on eth0
? (211.233.26.29) at 00:23:5E:12:63:FE [ether] on eth0
? (111.125.201.75) at 00:23:5E:12:63:FE [ether] on eth0
? (218.24.196.100) at 00:23:5E:12:63:FE [ether] on eth0
? (60.190.216.31) at 00:23:5E:12:63:FE [ether] on eth0
? (72.232.223.58) at 00:23:5E:12:63:FE [ether] on eth0
? (211.39.135.185) at 00:23:5E:12:63:FE [ether] on eth0
? (203.171.229.153) at 00:23:5E:12:63:FE [ether] on eth0
? (121.11.81.217) at 00:23:5E:12:63:FE [ether] on eth0
? (61.110.195.18) at 00:11:43:E0:7D:19 [ether] on eth0
? (61.164.112.5) at 00:23:5E:12:63:FE [ether] on eth0
? (218.66.79.152) at 00:23:5E:12:63:FE [ether] on eth0
? (221.139.48.11) at 00:23:5E:12:63:FE [ether] on eth0
? (211.233.26.12) at 00:23:5E:12:63:FE [ether] on eth0
? (211.137.175.2) at 00:23:5E:12:63:FE [ether] on eth0
? (116.71.174.203) at 00:23:5E:12:63:FE [ether] on eth0
? (72.18.205.157) at 00:23:5E:12:63:FE [ether] on eth0
? (211.39.136.4) at 00:23:5E:12:63:FE [ether] on eth0
? (202.255.47.226) at 00:23:5E:12:63:FE [ether] on eth0
? (211.211.52.134) at 00:23:5E:12:63:FE [ether] on eth0
? (218.61.2.197) at 00:23:5E:12:63:FE [ether] on eth0
? (61.164.151.12) at 00:23:5E:12:63:FE [ether] on eth0

.............

 
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