12-04-2002 08:06 AM - edited 03-02-2019 03:22 AM
Hey. I have a Cisco 806 router and have it hooked up to a cable modem (using Road Runner). I did a debug all and saw messages like these:
2d11h: IP ARP: rcvd req src 67.8.192.1 0005.74f6.8854, dst 67.8.194.135 Ethernet1
2d11h: IP ARP: rcvd req src 24.27.216.1 0005.74f6.8854, dst 24.27.220.68 Ethernet1
2d11h: IP ARP: rcvd req src 67.8.192.1 0005.74f6.8854, dst 67.8.194.140 Ethernet1
2d11h: IP ARP: rcvd req src 67.8.192.1 0005.74f6.8854, dst 67.8.194.141 Ethernet1
Our Internet connection will just go down sometimes and I have to unplug the cable modem for about 5 mins and turn it back on, then it works again. It was just down and I did a clear arp-cache command and the connection was established again. Any ideas?
John
12-04-2002 05:54 PM
Hi John:
Who does that mac address belong to? Who are thos IP addresses? Can we see a config?
Thanks...Steve
12-07-2002 02:50 PM
It looks like that MAC address is the default gateway's on my local subnet. I'm using cable and I think those IP's are ones doing ARP requests on my local subnet too. Is that normal?
version 12.2
no parser cache
no service single-slot-reload-enable
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname cisco1
!
logging rate-limit console 10 except errors
enable secret 5 $1$KVcz$8bzbZPjCCat2SGl/knO2m0
!
ip subnet-zero
no ip gratuitous-arps
no ip domain-lookup
!
no ip dhcp-client network-discovery
lcp max-session-starts 0
!
interface Ethernet0
description Interface to PC
ip address 10.10.10.1 255.255.255.0
no ip proxy-arp
ip nat inside
no cdp enable
hold-queue 32 in
!
interface Ethernet1
description Interface to Cable Modem
ip address dhcp
no ip proxy-arp
ip nat outside
no cdp enable
!
ip classless
no ip http server
!
ip nat inside source list 102 interface Ethernet1 overload
ip nat inside source static tcp 10.10.10.3 3389 interface Ethernet1 3389
ip nat inside source static tcp 10.10.10.3 21 interface Ethernet1 21
logging source-interface Ethernet0
logging 10.10.10.3
access-list 102 permit ip 10.10.10.0 0.0.0.255 any
no cdp run
!
line con 0
transport input none
stopbits 1
line vty 0 3
exec-timeout 0 0
login local
length 0
line vty 4
exec-timeout 0 0
login local
length 0
!
scheduler max-task-time 5000
John
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